35th Annual Meeting Cervical Spine Research Society - Europe

22–24 May 2019 • Rome/IT

35th Annual Meeting Cervical Spine Research Society - Europe

22–24 May 2019 • Rome/IT

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Scientific programme

Key topic
Traumatic lesions of the cervical spine

17:30–19:30
Room
ePoster exhibition
ePoster-area

Biomechanics and basic science
Cervical deformity and sagittal balance
Complications: epidemiology, diagnosis and imaging
Degenerative cervical spine
Motion preservation
Trauma of the subaxial cervical spine
Trauma of the upper cervical spine
Tumors and infections
Value and outcomes in cervical spine surgery

18:00–19:30
Room
Welcome reception
Foyer
@Phil_Good / fotolia.com
08:00–18:30
Room
ePoster exhibition
ePoster-stations
08:15–08:30
Room
Welcome address
Auditorium
08:30–09:30
Room
Lecture session 1
Mario Boni Grant nominated oral presentations

Auditorium
08:30
O1
Maintaining range of motion after cervical arthroplasty does not prevent adjacent segment degeneration
Xiaoyu Yang (Leiden/NL), Roland Donk (Mill/NL), Mark Arts (The Hague/NL), Hisse Arnts (Amsterdam/NL), Joris Walraevens (Heverlee/BE), Zhiwei Zhai (Leiden/NL), Bart Depreitere (Leuven/BE), Ronald Bartels (Nijmegen/NL), Carmen Vleggeert-Lankamp (Leiden/NL)
08:36
O2
Is upper cervical involvement in female patients with RA associated with neck pain, dysfunction and QOL?
Kazuto Miura (Nagaoka, Niigata/JP), Osamu Morita (Nagaoka/JP), Toru Hirano, Kei Watanabe, Naoki Kondo, Jun-ichi Fujisawa (Niigata/JP), Tadamasa Hanyu, Takahiro Netsu (Nagaoka/JP), Naoto Endo (Niigata/JP)
08:42
O3
Intraoperative neuromonitoring for ossification of posterior longitudinal ligament in nationwide prospective multicenter study
Go Yoshida, Yukihiro Matsuyama, Hiroki Ushirozako (Hamamatsu/JP), Shiro Imagama (Nagoya/JP), Shigenori Kawabata (Tokyo/JP)
08:48
O4
Degenerative cervical myelopathy: Chronic trauma leads to alterations of endogenic inflammatory and angiogenetic mediator concentrations in CSF
Christian Blume, Hans Clusmann, Lars Ove Brandenburg, Matthias Geiger, Marguerite Mueller, Christian Andreas Müller (Aachen/DE)
08:54
O5
Minimal clinically important difference and substantial clinical benefit using PROMIS CAT in cervical spine surgery
Michael Steinhaus (New York, NY/US), Benjamin Khechen (Chicago, IL/US), Daniel Stein, Thomas Ross, Jingyan Yang (New York, NY/US), Kern Singh (Chicago, IL/US), Todd J. Albert, Darren Lebl, Russel Huang, Harvinder Sandhu, Bernard Rawlins, Frank Schwab, Virginie Lafage, Han Jo Kim, Sravisht Iyer (New York, NY/US)
09:00
O6
Neuropathic pain after spinal cord injury relieves in CCL21 knockout (plt) mouse through decreasing of M1 type microglia/macrophage and inflammatory cytokines at the injured site and lumbar enlargement
Hideaki Nakajima, Kazuya Honjoh, Shuji Watanabe, Akihiko Matsumine (Fukui/JP)
09:06 Discussion
09:30–10:30
Room
Lecture session 2
Degenerative cervical spine

Auditorium
09:30
O7
Radiological outcomes following hyperlordotic cage insertion in anterior cervical discectomy and fusion
Dianna Li, Katherine Poulgrain, Andrew Kam (Westmead/AU)
09:35
O8
Is right side anterior cervical approach a risk factor of recurrent nerve injury?: From the point of the frequency of aortic arch anomaly
Takeshi Aoyama, Naoshi Obara (Sapporo/JP)
09:40
O9
Posterior foraminotomy versus anterior decompression and fusion in patients with cervical degenerative disc disease with radiculopathy ‒ 5-Year outcome from a national spine register
Anna MacDowall (Uppsala/SE), Robert Heary (Newark, NJ/US), Marek Holy (rebro/SE), Claes Olerud (Uppsala/SE)
09:45
O10
Disc height narrowing does not affect the intervertebral stability in cervical spondylolisthesis: Analysis of CT and X-rays of 101 spondylolisthesis patients
Ryoma Aoyama, Tateru Shiraishi, Ken Ninomiya, Satoshi Nori (Ichikawa-shi, Chiba/JP), Junichi Yamane (Musashimurayama/JP), Kazuya Kitamura (Yokohama/JP), Satoshi Suzuki (Tokyo/JP)
09:50 Discussion
10:00
O11
Morphological changes in the intervertebral disc post trauma: any impact of preexisting segment degeneration?
Ingrid Sitte, Miranda Klosterhuber, Richard Andreas Lindtner, Sabrina Barbara Neururer (Innsbruck/AT), Anton Kathrein (Zams/AT)
10:05
O12
Adjacent segment pathology after cervical laminoplasty
Shino Mori, Ko Ikuta, Takaomi Kobayashi, Ryohei Yano, Kensuke Hotta, Keigo Masuda, Takahiro Kitamura, Hideyuki Senba, Satoshi Shidahara (Karatsu-city, Saga/JP)
10:10
O13
The spinal cord "back shift" concept in posterior decompression and stabilization in lordosis for cervicalspondylotic myelopathy: favorable clinical outcomes 
Vincenzo Denaro, Gianluca Vadalà, Alberto Corrado Di Martino, Rocco Papalia (Rome/IT)
10:15
O14
Clinical feature of the revision cases due to symptomatic adjacent segment degeneration after the anterior cervical decompression and fusion surgery
Atsuomi Aiba, Macondo Mochizuki, Ryo Kadota (Numazu, Shizuoka/JP), Takeo Furuya (Chiba/JP), Masao Koda (Tsukuba/JP)
10:20 Discussion
10:30–11:00
Room
Industrial and ePoster exhibition and Coffee break
Exhibition area
11:00–11:45
Room
Round table session 1
An intriguing case on subaxial trauma

Auditorium
 Speaker 1
Heiko Koller (Vogtareuth/DE)
 Speaker 2
Dominique Rothenfluh (Oxford/GB)
11:45–12:15
Room
Presidential lecture 1
Auditorium
 Direct internal fixation for atlas fracture
Suk Kyung-Soo (Seoul/KR)
 Surgical treatment of cervical sagittal malalignment
Suk Kyung-Soo (Seoul/KR)
12:30–13:30
Room
Industry-sponsored symposium
Space 4A+B
12:30 Introduction
12:40 Minimally invasive posterior cervical fusion with DTRAX® (GL-DTRAX Spinal System)
Óscar Alves (Porto/PT)
13:10 Discussion
12:30–13:30
Room
Industry-sponsored symposium
Space 4C+D
12:30 Introduction
12:35 What do I do to avoid complications in Complex Posterior Cervical Spine Surgeries?
Neil Buxton (Saint Helens/GB)
13:00 How can Navigation and Intra-operative imaging facilitate Posterior Cervical Fusion Surgery
Martin Gehrchen (Copenhagen/DK)
13:20 Discussion
12:30–13:30
Room
Moderator
Industry-sponsored symposium
Space 1
Pier Paolo Mura (Rome/IT)
 Speaker 1
Roberto Assietti (Milan/IT)
 Speaker 2
Matthew Crocker (London/GB)
13:30–14:00
Room
Industrial and ePoster exhibition and Lunch break
Exhibition area
14:00–15:00
Room
Lecture session 3
Trauma of the cervical spine

Auditorium
14:00
O15
A dynamic multi-segmental finite element model of rear-impact cervical whiplash: Role of spine morphological variations and head inertial properties on segmental rotations
Jamie Baisden (Milwaukee, WI/US), Jobin Daniels (Madras/IN), Narayan Yoganandan (Milwaukee, WI/US), Gurunarhan Kumar (Madras/IN)
14:05
O16
Comparison of surgical results of C-arm versus O-arm in C1-2 transarticular screw fixation
Keiji Wada, Ryo Tamaki, Osamu Satoh, Ken Okazaki (Tokyo/JP)
14:10
O17
Time course of respiratory dysfunction in the cervical spinal cord injury without bony injury: respiratory function restore around 12 weeks after injury
Chikara Ushiku, Kota Suda, Satoko Harmon, Matsumoto, Miki Komatsu (Bibai/JP), Masahiko Takahata, Norimasa Iwasaki (Sapporo/JP), Akio Minami (Bibai/JP)
14:15
O18
Relationship between the timing of reduction for cervical spine dislocations and neurological recovery
Hisakazu Shitozawa, Yasuo Ito, Takeshi Kikuchi (Kobe/JP)
14:20 Discussion
14:30
O19
Clinical outcomes of acute cervical spinal cord injury depending on the timing of surgery
Tae Young Kwon, Kyung Jin Song, Jong Hyun Ko, Hyung Jik Kim (Jeonju-si, Jeollabuk-do/KR)
14:35
O20
The effect of rod pattern and multiple screw-rod constructs for surgical stabilization of the 3-column destabilized cervical spine – Presentation of biomechanical analysis and clinical rationale
Sebastian Hartmann, Claudius Thomé, Werner Schmölz, Raphael Gmeiner, Anto Abramovic, Anja Tschugg, Heiko Koller (Innsbruck/AT)
14:40
O21
Type II odontoid fracture in elderly patients treated conservatively: is bony union the goal?
Giorgio Lofrese (Cesena/IT), Federico De Iure (Bologna/IT), Antonio Musio (Ferrara/IT), Francesco Cultrera, Roberto Donati (Cesena/IT), Antonio Martucci (Bologna/IT), Pasquale De Bonis (Ferrara/IT)
14:45
O22
Crowned dens: normal finding in old people, radiological degenerative sign or clinical syndrome? Reflection on four cases and a prevalence study on 843 patients
Carlos Villas, Mariana Elorz, Matías Alfonso, Rafael Llombart, Jesús Payo-Ollero, Jorge Gómez, Alvaro Suárez, Jesús Dámaso Aquerreta (Pamplona/ES)
15:00–15:30
Room
Debate session 1
Cervical spondylodesis: with or without navigation?

Auditorium
 Pro
Johannes Schroeder (Osnabrück/DE)
 Con
Antonino Raco (Rome/IT)
15:30–16:00
Room
Industrial and ePoster exhibition and Coffee break
Exhibition area
16:00–16:30
Room
Mario Boni Grant nominated ePosters
Auditorium
16:00
O23
Surgical navigation technology using a combination of augmented and virtual reality for minimally invasive spine surgery
Gustav Burström, Oscar Persson, Erik Edström, Adrian Elmi Terander (Stockholm/SE)
16:04
O24
Another solution in order to increase accuracy of cervical pedicle screw placement: a new aiming probe for CPS
Kota Suda, Satoko Matsumoto, Miki Komatsu, Masahiro Ota, Takeru Tsujimoto, Mitsuru Asukai, Yoshihiro Utsunomiya, Yasuaki Tojo, Akio Minami (Bibai/JP)
16:08
O25
Intramedullary tumors of the cervical spine
Jörg Klekamp (Quakenbrück/DE)
16:12
O26
Surgical site infection after cervical laminoplasty using hydroxyapatite spacer
Takafumi Inoue (Takeo city, Saga/JP)
16:16
O27
Randomized, placebo-controlled, double-blinded trial of granulocyte colony stimulating factor-mediated neurotection for acute spinal cord injury
G-SPIRIT Study Group (Chiba/JP), Masao Koda (Tsukuba, Chiba/JP), Masashi Yamazaki (Chiba, Tsukuba/JP), Seiji Ohtori, Hideki Hanaoka (Chiba/JP)
16:20 Discussion
16:30–17:00
Room
Preview upon future CSRS meetings
Auditorium
17:00–17:30
Room
Invited guest lecture 1
Auditorium
 Cervical spine trauma: sharing 20 years of mistakes and complications
Federico De lure (Bologna/IT)
17:30–18:30
Room
CSRS Europe general assembly
Auditorium
19:30–23:59
Room
Social evening
Terrazza Caffarelli
©gnoparus / fotolia.com
08:30–09:30
Room
Lecture session 4
Value, pain management and outcomes in cervical spine conservative treatment

Auditorium
08:30
O28
The role of non-rigid cervical collar in pain relief and functional restoration after whiplash injury: a systematic review and pooled analysis of randomized controlled trials
Luca Ricciardi (Rome/IT, Jacksonville, FL/US), Vito Stifano, Filippo Maria Polli (Rome/IT), Luca Proietti, Andrea Perna (Roma/IT), Alessandro Olivi (Rome/IT), Francesco Ciro Tamburrelli (Roma/IT), Carmelo Lucio Sturiale (Rome/IT)
08:35
O29
The Odom's criteria validated at last: a clinimetric evaluation in cervical spine surgery.
Anne Broekema, Rob Molenberg, Jos Kuijlen, Rob Groen, Michiel Reneman, Remko Soer (Groningen/NL)
08:40
O30
Combination of 10-s Grip and Release test and 10-s Step test can distinguish thoracic myelopathy from cervical myelopathy
Yasutsugu Yukawa, Hiroshi Hashizume, Akihito Minamide, Hiroshi Iwasaki, Shunji Tsutsui, Masanari Takami, Motohiro Okada, Hiroshi Yamada (Wakayama/JP)
08:45
O31
Blood-spinal cord barrier disruption in patients with degenerative cervical myelopathy
Christian Blume, Matthias Geiger, Marguerite Mueller, Lars Ove Brandenburg, Hans Clusmann, Christian Andreas Müller (Aachen/DE)
08:50 Discussion
09:00
O32
Kinetic change of spinal cord compression on flexion-extension magnetic resonance imaging in cervical spine
Subash Jha (biratnagar/NP), Masashi Miyazaki, Hiroshi Tsumura (Oita/JP)
09:05
O33
The neurological deficits patterns of cervical radiculopathies which were misdiagnosed as peripheral nerve entrapment diseases
Tomohiko Hasegawa, Yu Yamato, Daisuke Togawa, Go Yoshida, Tomohiro Banno, Hideyuki Arima, Shin Oe, Takao Omura, Yukihiro Matsuyama (Hamamatsu/JP)
09:10
O34
The corticospinal reserve: reversible reorganization of motor area and excitability in degenerative cervical myelopathy
Anna Zdunczyk, Leona Kawelke, Thomas Picht, Peter Vajkoczy (Berlin/DE)
09:15
O35
The three sagittal morphotypes that define the normative cervical spine
Sohrab Virk, Renaud Lafage, Jonathan Elysee, Todd J. Albert, Lawrence G Lenke, Frank Schwab, Virginie Lafage (New York, NY/US)
09:20
O36
Complications following cervical spine surgery in patients with Parkinson's disease – an analysis of 21 patients.
Kais Abu Nahleh, Hassan Allouch, Mootaz Shousha, Mohammed Alhashash, Heinrich Böhm (Bad Berka/DE)
09:25 Discussion
08:30–16:00
Room
ePoster exhibition
ePoster-stations
09:30–10:30
Room
Lecture session 5
Cervical deformity and sagittal balance

Auditorium
09:30
O37
A comparison of cervical disc arthroplasty and anterior cervical discectomy and fusion in patients with two-level cervical degenerative disc disease: 5-year follow-up results
Gao Xinlin (Chengdu/CN)
09:35
O38
Cervical and spinal sagittal alignment deviation in the general elderly population: A Japanese cohort survey randomly sampled from a basic resident registry
Masashi Uehara, Jun Takahashi, Shota Ikegami, Ryosuke Tokida, Hikaru Nishimura (Matsumoto/JP), Noriko Sakai (Obuse/JP), Hiroyuki Kato (Matsumoto/JP)
09:40
O39
The clinical relevance of the cervical disc prosthesis: combining clinical results of two RCTs
Caroline Goedmakers (Leiden/NL), Ronald Bartels, Roland Donk (Nijmegen/NL), Mark Arts (The Hague/NL), Erik van Zwet, Carmen Vleggeert-Lankamp (Leiden/NL)
09:45
O40
Is C1/2 fusion required for all patients with Chiari I Malformation or basilar invagination?
Jörg Klekamp (Quakenbrück/DE)
09:50 Discussion
10:00
O41
Does a disruption of the C2 extensor muscle insertions affect post-operative cervical alignment in cervical laminoplasty?
Ko Ikuta, Shino Mori (Karatsu-city/JP)
10:05
O42
The impact of cervical sagittal imbalance on laminoplasty indicated to patients with cervical myelopathy
Minori Kato (Osaka/JP)
10:10
O43
The impact of the multifidus muscle swelling on C5 palsy after cervical laminoplasty
Yoshitada Usami, Yoshiharu Nakaya, Sachio Hayama, Atsushi Nakano (Takatsuki/JP), Mutsumi Ohue (Kishiwada/JP), Masashi Neo (Takatsuki/JP)
10:15
O44
Biomechanical effects on intermediate segment of noncontiguous hybrid surgery with cervical disc arthroplasty and anterior cervical discectomy and fusion: a finite element analysis
Tingkui Wu, Beiyu Wang, Hao Liu, Xin Rong, Yang Meng (Chengdu/CN)
10:20
O45
The characteristic of cervical sagittal alignment in patients with chronic low back pain 
Hideyuki Arima, Yu Yamato (Hamamatsu/JP), Koichi Sato (Tokyo/JP), Ryu Shiba (Shizuoka/JP), Yoshihiro Uchida (Shimizu-cho/JP), Toshiyuki Tsuruta (Ogi/JP), Kanehisa Hashiguchi (Kagoshima/JP), Hajime Hamamoto (Shizuoka/JP), Eichiro Watanabe (Fuji/JP), Kaoru Yamanaka (Shizuoka/JP), Kokai Nomura (Fujieda/JP), Yukihiro Matsuyama (Hamamatsu/JP)
10:25 Discussion
10:30–11:00
Room
Industrial and ePoster exhibition and Coffee break
Exhibition area
11:00–11:45
Room
Round table session 2
Spinal cord lesion

Auditorium
 Speaker 1
Cedric Barrey (Lyon/FR)
 Speaker 2
Anna MacDowall (Uppsala/SE)
 Speaker 3
Roberto Assietti (Mailand/IT)
11:30 Discussion
11:45–12:15
Room
Presidential lecture 2
Auditorium
 Cervical spine trauma current concepts
Alexander R. Vaccaro (Philadelphia, PA/US)
12:30–13:30
Room
Industry-sponsored symposium
4A+B
12:30 Current concepts for post cervical deformity C0-T1
Chris Ames (San Francisco, CA/US)
13:00 Advances in cervical deformity treatment: what the latest research tells us
Heiko Koller (Vogtareuth/DE)
12:30–13:30
Room
Industry-sponsored symposium
Space 4C+D
12:30 Introduction – What alignment goals we should take in account when planning cervical surgery
Ronald Bartels (Nijmegen/NL)
12:40 Case-based discussion – Anterior approach demonstrating planning, surgical strategy, intraoperative evaluation and outcome
(presenter: Ronald Bartels)
Ronald Bartels (Nijmegen/NL), Pedro Berjano (Milan/IT)
13:00 Case-based discussion – Global evaluation in a chin-on-chest deformity case. The importance of evaluating the cervical but also the subcervical spine for the planning and execution
(presenter: Pedro Berjano)
Ronald Bartels (Nijmegen/NL), Pedro Berjano (Milan/IT)
13:20 Take-home messages
12:30–13:30
Room
Industry-sponsored symposium
Space 1
 Speaker 1
Christopher D. Chaput (San Antonino, TX/US)
 Speaker 2
Laura B. Flawn (San Antonino, TX/US)
13:30–14:00
Room
Industrial and ePoster exhibition and Lunch break
Exhibition area
14:00–15:00
Room
Lecture session 6
Tumours, infections and surgical outcome in the cervical spine

Auditorium
14:00
O46
Anterior cervical corpectomy and reconstruction using titanium implants in the surgical treatment of cervical spondylodiscitis: Long term results
Mohammed Alhashash, Reza Bahrami, Mootaz Shousha, Heinrich Böhm (Bad Berka/DE)
14:05
O47
Feasibility of the far lateral suboccipital approach to the retroodontoid region: How much bone removal is needed?
Gergely Bodon (Esslingen a.N./DE), Kristof Kiraly (Budapest/HU), Bernhard Hirt (Tübingen/DE), Heiko Koller (München/DE)
14:10
O48
Risk factor of surgical site infection (SSI) in cervical spine surgery – importance of perioperative hygienic status
Naosuke Nagata, Shuichi Kaneyama, Masatoshi Sumi, Koichi Kasahara, Aritetsu Kanemura, Hiroaki Hirata, Masaaki Ito (Kobe/JP)
14:15
O49
Patterns of short-term and long-term surgical outcomes and prognostic factors for cervical ossification of the posterior longitudinal ligament between anterior cervical corpectomy and fusion and posterior laminoplasty
Bong Ju Moon (Gwangju/KR), Dong Ah Shin, Seong Yi, Yoon Ha, Keung Nyun Kim, Do Heum Yoon (Seoul/KR), Jung-Kil Lee (Gwangju/KR)
14:20 Discussion
14:30
O50
Trends in posterior cervical fusion in the United States from 2000-2016
Michael Safaee (San Francisco, CA/US), Katherine Corso, Jill Ruppenkamp, Ann Menzie (Raynham, MA/US), Christopher Ames (San Francisco, CA/US)
14:35
O51
Increasing surgical invasiveness relative to frailty status in cervical deformity surgery: A risk benefit analysis
Peter Passias, Avery Brown, Cole Bortz, Katherine Pierce, Haddy Alas, Bassel Diebo, Renaud Lafage, Virginie Lafage (New York, NY/US), Christopher Ames (San Francisco, CA/US), Douglas Burton (Kansas City, KS/US), Neel Anand (Los Angeles, CA/US), Robert Hart (Seattle, WA/US), Gregory Mundis (San Diego, CA/US), Brian Neuman (Baltimore, MD/US), Breton Line (Denver, CO/US), Christopher Shaffrey (Charlottesville, VA/US), Eric Klineberg (Davis, CA/US), Justin Smith (Charlottesville, VA/US), Frank Schwab (New York, NY/US), Shay Bess, International Spine Study Group (ISSG) (Denver, CO/US)
14:40
O52
Does prophylactic foraminotomy reduce the occurrence of postoperative C5 palsy in reconstruction surgery using cervical pedicle screw?
Terumasa Ikeda, Hiroshi Miyamoto, Masao Akagi (Osaka/JP)
14:45
O53
Cortical breach detection in spine surgery: Novel use of diffuse reflectance spectroscopy
Gustav Burström (Stockholm/SE), Akash Swamy (Delft/NL), Jarich Spliethoff (Eindhoven/NL), Benno H.W. Hendricks (Delft/NL), Oscar Persson, Erik Edström, Adrian Elmi Terander (Stockholm/SE)
15:00–15:30
Room
Debate session 2
Minimal Invasive Surgery in the cervical spine

Auditorium
 Pro
Ehab Shiban (Munich/DE)
 Contra
Michael Mayer (Vogtareuth/DE)
15:30–16:00
Room
Industrial and ePoster exhibition and Coffee break
Exhibition area
16:00–16:30
Room
Invited guest lecture 2
Auditorium
 Health and diseases in the digital era
Luca Pani (Miami, FL/US)
16:30–17:00
Room
My worst complication
Auditorium
 Case report 1
Gergely Bodon (Esslingen/DE)
 Case report 2
Carmen Vleggeert-Lankamp (Leiden/NL)
 Case report 3
Óscar L. Alves (Porto/PT)
17:00–17:15
Room
Award session
Auditorium
17:45–18:00
Room
Final remarks
Auditorium
17:30–19:30
Raum
ePoster exhibition
ePoster-stations
17:30–19:30
Raum
Biomechanics and basic science
ePoster-stations

P1
Cervical spine morphology and ligament property variations: a finite element study of their influence on sagittal bending characteristics
Jamie Baisden (Milwaukee, WI/US), Jobin Daniels (Madras/IN), Narayan Yoganandan (Milwaukee, WI/US), Gurunarhan Kumar (Madras/IN)

P2
Is it possible to place accurate C2 screws without spinal computerized navigation?
Carlos Ribeiro, Rui Reinas, D'jamel Kitumba (Vila Nova de Gaia/PT), Óscar L. Alves (Vila Nova de Gaia, Porto/PT)

P3
Cervical sagittal balance compensation mechanisms after lower cervical spine total disc replacement (TDR)
Rui Reinas, D'jamel Kitumba (Vila Nova de Gaia/PT), Óscar L. Alves (Vila Nova de Gaia, Porto/PT)

P4
Anatomy of the dens and its implications for fracture treatment: an anatomical and radiological study
Jan Štulík, Petr Nesnídal, Ondřej Naňka, Martin Podhráský, Gabriela Hodasová, Petr Fojtík (Prague/CZ), Sohrab Virk (New York/US)

P5
The impact of different artificial disc heights on the facet joint during cervical disc replacement: a finite element study
Xiaofei Wang, Hao Liu, Yang Meng (Chengdu/CN)

P6
3D printed anatomical models of severe cervical deformity: a new tool for surgical planning and intraoperative surgery guidance
Federico De Iure, Michele Cappuccio, Luca Amendola, Maurizio Ortolani, Claudio Belvedere, Alberto Leardini (Bologna/IT)

P7
Teriparatide anabolic therapy as potential treatment of type II dens non-union fractures
Francesco Tamburrelli, Francesco Ciro Tamburrelli, Enrico Pola (Rome/IT)
17:30–19:30
Raum
Cervical deformity and sagittal balance
ePoster-stations

P8
Postoperative reciprocal changes in global spinal alignment after occipitospinal fusion and risk factors of horizontal gaze difficulty
Shuichi Kaneyama, Masatoshi Sumi, Koichi Kasahara, Aritetsu Kanemura, Hiroaki Hirata, Masaaki Ito (Kobe/JP)

P9
Impact of cervical kyphosis on the results of selective laminectomy in patients with cervical spondylotic myelopathy
Ken Ninomiya, Ryoma Aoyama, Satoshi Nori (Ichikawa/JP), Junichi Yamane (Tokyo/JP), Kazuya Kitamura (Yokohama/JP), Seiji Ueda (Kawasaki/JP), Hiraku Hotta, Ukei Anazawa (Ichikawa/JP), Tateru Shiraishi (Tokyo/JP)

P10
Dropped Head syndrome requiring reconstruction surgery after cervical laminoplasty: Report of three cases and review of the literature
Shigeo Ueda, Nobuhiro Sasaki, Tomoaki Fujita, Miyuki Fukuda, Masayuki Kuroda, Hiroaki Manabe, Minoru Hoshimaru (Katano/JP)

P11
The relations with cervical kyphosis change and sagittal global alignment to occur after cervical laminoplasty
Norichika Yoshie, Teruhumi Kokabu, Yuichiro Abe, Yuki Okamura, Yasushi Yanagibashi, Takahiko Hyakumachi (Eniwa/JP)

P12
Morphologic change of the spinal cord according to correction of cervical kyphosis by surgical intervention
Shingo Aoyama, Hiroshi Miyamoto, Terumasa Ikeda, Masao Akagi (Osaka/JP)

P13
Outcomes of correction surgery using cervical pedicle screw for dropped head syndrome
Hiroshi MIyamoto, Terumasa Ikeda, Masao Akagi (Osaka/JP)

P14
Changes in the quality of life of patients operated on for kyphotic deformity of the cervical spine, depending on the parameters of the local sagittal balance of the cervical spine
Vladimir Klimov, Vladislav Kelmakov, Aleksey V. Evsyukov, Evgeniy Loparev, Murodzhon Kosimshoev, Evgenia Amelina (Novosibirsk/RU)

P15
Radiographic and clinical outcomes can correlate in cervical deformity correction: a discriminant analysis of HRQL outcomes and correlation with an established morphological classification
Renaud Lafage, Peter Passias, Jingyan Yang (New York, NY/US), Eric Klineberg (Davis, CA/US), Gregory Mundis (La Jolla, CA/US), Themistocles Protopsaltis (New York, NY/US), Christopher Shaffrey (Charlottesville, VA/US), Shay Bess (Denver, CO/US), Han Jo Kim (New York, NY/US), Christopher Ames (San Francisco, CA/US), Frank Schwab (New York, NY/US), Justin Smith (Charlottesville, VA/US), Virginie Lafage (New York, NY/US), International Spine Study Group (ISSG) (Denver, CO/US), Sohrab Virk (New York, NY/US)

P16
Intraoperative alignment goals for severe cervical deformity to achieve optimal improvements in health-related quality of life measures
Sohrab Virk, Peter Passias, Renaud Lafage (New York, NY/US), Eric Klineberg (Davis, CA/US), Gregory Mundis (La Jolla, CA/US), Themistocles Protopsaltis (New York, NY/US), Christopher Shaffrey (Charlottesville, VA/US), Shay Bess (Denver, CO/US), Han Jo Kim (New York, NY/US), Christopher Ames (San Francisco, CA/US), Frank Schwab (New York, NY/US), Justin Smith (Charlottesville, VA/US), Virginie Lafage (New York, NY/US), International Spine Study Group (ISSG) (Denver, CO/US)

P17
Upper thoracic versus mid-thoracic lower instrumented endpoints have similar radiographic and clinical outcomes in cervical deformity patients
Han Jo Kim, Mathieu Bannwarth (New York, NY/US), Justin Smith (Charlottesville, VA/US), Eric Klineberg (Davis, CA/US), Gregory Mundis (La Jolla, CA/US), Themistocles Protopsaltis, Jonathan Elysee (New York, NY/US), Shay Bess (Denver, CO/US), Christopher Shaffrey (Charlottesville, VA/US), Peter Passias, Frank Schwab (New York, NY/US), Christopher Ames (San Francisco, CA/US), Virginie Lafage (New York, NY/US), International Spine Study Group (ISSG) (Denver, CO/US)

P18
Importance of the sagittal Occipitoaxial alignment in rheumatoid arthritis, clinical outcome and adjacent levels degeneration analysis: A retrospective study on 35 patients treated by Occipitocervical stabilization
Maurizio Genitiempo, Francesco Ciro Tamburrelli (Rome/IT)

P19
Occipital cervical fixation in pediatric patients under 10 years of age
Osvaldo Mazza, Marco Crostelli, Carlo Iorio, Massimo Mariani, Dario Mascello (Roma/IT)

P20
Comparison of perioperative complications following posterior column osteotomies versus posterior based three column osteotomy for correction of moderate to severe cervical sagittal deformity in 95 patients at single center
Darryl Lau, Ceclia Dalle Ore, Vedat Deviren, Christopher Ames (San Francisco, CA/US)

P21
Neurologic complication rates and utility of intraoperative neuromonitoring in lower cervical and upper thoracic posterior based three column osteotomies for correction of cervical deformity
Darryl Lau, Ceclia Dalle Ore, Vedat Deviren, Christopher Ames (San Francisco, CA/US)

P22
Hybrid fixations for atlantioaxial dislocation or instability
Hao Zhang (ShenZhen city/CN)

P23
Surgical treatment for dropped head syndrome with severe positive imbalance: Report of three cases
Masatake Ino, Takachika Shimizu, Tetsu Tanouchi (Maebashi/JP)

P24
The Impact of the lower instrumented level on outcomes in cervical deformity surgery
Peter Passias, Haddy Alas, Avery Brown, Katherine Pierce, Cole Bortz, Renaud Lafage, Virginie Lafage, Bassel Diebo (New York, NY/US)
17:30–19:30
Raum
Complications: epidemiology, diagnosis and imaging
ePoster-stations

P25
C5 palsy develops relatively often after multilevel anterior or anteroposterior combined surgery in cervical spine
Yasutsugu Yukawa, Hiroshi Hashizume, Akihito Minamide, Hiroshi Iwasaki, Shunji Tsutsui, Masanari Takami, Motohiro Okada, Hiroshi Yamada (Wakayama/JP)

P26
Corticospinal tract function and clinical presentations among various morphologies of ossification of the posterior longitudinal ligament in the cervical spine
Kazuyoshi Nakanishi, Naosuke Kamei, Toshio Nakamae, Yuji Tsuchikawa, Taiki Morisako, Takahiro Harada, Nobuo Adachi (Hiroshima/JP)

P27
Analysis of complications of pedicle screw fixation in surgery of the cervical spine
Vladimir Klimov (Novosibirsk/RU), Murodzhon Kosimshoev (Novosibirsk/RU, /), Aleksey V. Evsyukov (Novosibirsk/RU)

P28
Surgical outcomes for upper cervical lesions in athetoid cerebral palsy patients
Hisanori Mihara, Yasunori Tatara, Takanori Niimura, Tatsuhiro Sekiya, Yohei Ito, Atsushi Goda (Yokohama/JP)

P29
Serious complications related to surgical site infection after cervical laminoplasty : A report of two case
Munehisa Koizumi, Yoshinobu Kato, Shinji Isomoto, Kazunori Tanaka, Tsuyoshi Yamasaki, Takahiro Mui, Kazuya Sugimoto, Yasuhito Tanaka (Nara/JP)

P30
Notfall reposition of atlantioaxial dislocation in trauma
Mahmoud Aboelsaad (Düsseldorf/DE)

P31
Percutaneous ultrasonographic observation of the spinal cord in cases of epidural hematoma after cervical laminoplasty
Yoshiharu Nakaya, Atsushi Nakano, Sachio Hayama, Takashi Fujishiro, Toma Yano, Masashi Neo (Takatsuki/JP)

P32
Defining an algorithm for treatment of severe cervical deformity using surgeon survey and treatment patterns
Sohrab Virk, Jonathan Elysee (New York, NY/US), Munish Gupta (St. Louis, MS/US), Eric Klineberg (Davis, CA/US), Frank Schwab, Han Jo Kim (New York, NY/US), Douglas Burton (Kansas City, KS/US), Peter Passias, Themistocles Protopsaltis (New York, NY/US), Justin Smith (Charlottesville, VA/US), Christopher Ames (San Francisco, CA/US), Renaud Lafage, Virginie Lafage (New York, NY/US), International Spine Study Group (ISSG) (New York, NY, Denver, CO/US)

P33
The X-ray of upper cervical spine is generally unclear.The computed tomography (CT) doesn"t reflect the weight of head.Therefore,the accurate diagnosisof vertical subluxation (VS) is difficult.Tomosynthes (TOMOS)can be taken in standing position.We investigated the effectiveness of TOMOS for VS.
Ryo Tamaki, Keiji Wada, Ken Okazaki, Naoya Yamamoto (Shinjyukuku/JP)

P34
New id: O26 l Mario Boni Grant nominated ePosters
Takafumi Inoue (Takeo city, Saga/JP)

P35
Two case reports of bilateral C5 palsy after laminoplasty for cervical spondylotic myelopathy
Gentaro Ono (Fukuoka/JP), Ko Ikuta (Karatsu/JP)
17:30–19:30
Raum
Degenerative cervical spine
ePoster-stations

P36
Radiographic and clinical results of C1 laminoplasty for the treatment of compressive myelopathy
Kiyoshi Tarukado (Fukuoka/JP), Ko Ikuta (Saga/JP)

P37
Jugular outlet syndrome (JOS), a common sequela of chronic upper cervical dysfunction
Kjetil Larsen (Oslo/NO)

P38
Anterior vs posterior foraminotomy in solution of isolated cervical radiculopathy
Milan Nevšímal, Ondrej Teply, Jiri Fiedler, Vladimir Chlouba, Martin Bombic (Dobra Voda u Ceskych Budejovic/CZ)

P39
Extremely high preoperative C7 slope limits compensatory cervical lordosis after muscle-preserving selective laminectomy
Satoshi Nori (Chiba/JP), Tateru Shiraishi (Tokyo/JP), Ryoma Aoyama, Ken Ninomiya (Chiba/JP), Junichi Yamane (Tokyo/JP), Kazuya Kitamura, Seiji Ueda (Kanagawa/JP), Ukei Anazawa (Chiba/JP)

P40
Intradural cervical disc herniation: a case report
Takeshi Umebayashi (Tokyo/JP)

P41
Surgical outcome and characteristics of C7 spondylolisthesis with myelopathy
Fumihiro Arizumi, Toshiya Tachibana, Keishi Maruo, Kazuki Kusuyama, Kazuya Kishima, Shinichi Yoshiya (Nishinomiya/JP)

P42
Calcification of cervical ligamentum flavum: Cause of rapid progressive cervical myelopathy
Atsunori Ohnishi, Akira Yamagishi, Masayoshi Ishii, Tetsuo Ohwada (Amagasaki/JP)

P43
Comparison of clinical outcome between posterior foraminotomy and anterior cervical discectomy and fusion for drop finger caused by 8th cervical nerve root impairment
Masao Koda (Chiba/JP), Tetsuya Abe, Toru Funayama, Kousei Miura (Tsukuba/JP), Takeo Furuya, Satoshi Maki (Chiba/JP), Katsuya Nagashima, Kentaro Mataki, Masashi Yamazaki (Tsukuba/JP)

P44
CT morphometric analysis of the cervical spinal canal with special reference to the correlation between the levels of the vertebra
Hitoshi Yamahata, Masanori Yonenaga, Masanao Mori, Tadaaki Niiro, Jun Sugata, Tomohisa Okada, Takaaki Hiwatari, Koji Yoshimoto (Kagoshima/JP)

P45
Short-term effects of hyperbaric oxygen therapy for the patients with cervical myelopathy after cervical laminoplasty
Hiroki Sonoda, Kiyoshi Tarukado, Toshihiro Imamura, Kozo Kaji, Tomohiko Uemori (Kitakyushu Hukuoka/JP)

P46
Radiographic evaluation of retro-odontoid pseudotumor associated with degenerative change and posterior fixation
Takao Shinichiro, Haruo Misawa, Yasuyuki Shiozaki (Okayama/JP)

P47
A comparison of stand-alone locking zero-profile spacer and cage+plate for two-level cervical spondylopathy: a randomised control single-center trial
Christoph Hoffmann, Matti Scholz, Philip Schleicher, Andreas Pingel, Frank Kandziora (Frankfurt/DE)

P48
The Responsiveness and Reliability of Mid-Sagittal and Axial Plane Metrics in the Assessment of Degenerative Cervical Stenosis on T2-weighted MR Imaging
Uphar Chamoli, Keerthana Sritharan, Jeffrey Kuan, Ashish Diwan (Sydney/AU)

P49
Syrinx associated with cervical spondylosis: Report of eleven cases
Abolfazl Rahimizadeh (Teheran/IR)

P50
The fate of small and medium size asymptomatic cervical syrinx: Report of 14 cases
Abolfazl Rahimizadeh (Teheran/IR)

P51
Clinical and radiological results of hybrid surgery combined fusion and non-fusion for four-level cervical degenerative disc disease: a case series study with maximum 6-year follow-up
Wang Han, Meng Yang, Wang Xiao Fei, Liu Hao (Chengdu/CN)

P52
Acute onset spontaneous spinal cerebrospinal fluid leak, a case with a new neck pain in upright position
Toshio Doi, Junichi Arima (Hiroshima/JP)

P53
Is the behavior of disc replacement adjacent to fusion affected by the location of the fused level in hybrid surgery?
Tingkui Wu, Hao Liu, Beiyu Wang, Yang Meng, Xin Rong (Chengdu/CN)

P54
The relationship between American Society of Anesthesiologists Classification (ASA classification) and postoperative outcomes for the patients treated by cervical laminoplasty
Kensuke Shinohara, Tomohiko Hirose, Kazuhiro Takeuchi, Shinnosuke Nakahara (Okayama/JP)

P55
Cervical disc prosthesis compared to anterior cervical interbody fusion: Experience and results
Michail Tschigrjai (Halle/DE)

P56
The utility of electrophysiological examination measuring F-waves and compound action potentials of upper extremities for prognosis of the symptom of cervical radiculopathy
Norihiko Sumiyoshi, Takahiro Kubo (Matsuyama, Ehime/JP)

P57
Multilevel cervical spondylo-arthropaty with or without myelopathyEvaluation of long term-follow-up between anterior and posterior approach
Giovanni Barbagli, Giancarlo Lastrucci, Gianmarco Marchese, Niccolò Giabbani, Giulio Carlo Wembagher, Stefano Romoli (Firenze/IT)

P59
Does cervical cage shape. Influence intersomatic fusion? Perspectic studio and clinical experience
Mauro Costaglioli, Pierluigi Sannais, Carla Pani (Quartu S Elena - Cagliari/IT)

P129
Clinical study of anterior cervical discectomy and fusion for elderly patients with cervical anterior slip –postoperative correction loss of slip was a risk factor for early deterioration
Ryo Kadota, Macondo Mochizuki, Aiba Atsuomi (Numazu/JP), Masao Koda (Tsukuba/JP)
17:30–19:30
Raum
Motion preservation
ePoster-stations

P60
A direct In Vivocomparison of five cervical disc prostheses: A caprine study
Hoon Choi, Jamie Baisden, Narayan Yoganandan (Milwaukee, WI/US)

P61
Anterolateral foraminal decompression with complete removal of uncovertebral joint for cervical radiculopathy
Keiichi Iseda, Kenji Takahashi, Masaaki Nakajima (Okayama/JP)

P62
Comparison of clinical and radiological outcome of 2 cervical disc prostheses with particular focus on the development of heterotopic ossifications
Christoph Mehren, Franziska Heider, Daniel Sauer, Tuna Pehlivanoglu, Wolfgang Hitzl, Karin Würtz-Kozak, Bastian Storzer (Munich/DE)

P63
Unintended fusion in cervical artificial disc replacement: A prospective study on heterotopic ossification and clinical outcome, with 5 years follow-up
Catarina Marques, Anna MacDowall (Uppsala/SE), Martin Skeppholm, Nuno Canto Moreira (Stockholm/SE), Claes Olerud (Uppsala/SE)

P64
Anterior bone loss of vertebral bodies after cervical total disc replacement: an opposite of anterior heterotopic ossification?
Xiaofei Wang, Hao Liu, Yang Meng (Chengdu/CN)
17:30–19:30
Raum
Trauma of the subaxial cervical spine
ePoster-stations

P65
A case report of "locking spondyloptosis" ; the most severe traumatic cervical spondyloptosis with locking of spinous process and vertebral arch into spinal canal
Takeru Tsujimoto, Kota Suda, Satoko Matsumoto, Miki Komatsu, Masahiro Ota, Yasuaki Tojyo, Yoshihiro Utsunomiya, Mitsuru Asukai (Bibai-shi/JP), Masahiko Takahata, Norimasa Iwasaki (Sapporo/JP), Akio Minami (Bibai-shi/JP)

P66
What is the best indication for CT angiography screening of vertebral artery injury associated with cervical trauma?
Mitsuru Asukai (Higashi4jo Bibai, Hokkaido, Hamamatsu, Shizuoka/JP), Kota Suda, Satoko Matsumoto, Miki Komatsu, Masahiro Ota, Takeru Tsujimoto, Yoshihiro Utsunomiya, Yasuaki Tojo, Akio Minami (Higashi4jo Bibai, Hokkaido/JP), Yukihiro Matsuyama (Hamamatsu, Shizuoka/JP)

P67
Clinical management for spinal cord injury in patiens with cervical ankylosing disorders (ASD)
Kazuhiro Takeuchi, Shinnosuke Nakahara, Tomohiko Hirose, Kensuke Shinohara (Okayama/JP)

P68
Clinical analysis of lower cervical spine injury according to injury mechanism: Data of 477 surgical patients
Tae Young Kwon, Kyung Jin Song, Jong Hyun Ko, Hyung Jik Kim (Jeonju-si, Jeollabuk-do/KR)

P69
Surgical strategy in cervical fracture-dislocation: anterior, posterior, or new approaches? A novel technique of cervical pedicle screw fixation with reverse insertion in the supine position
Takamitsu Tokioka, Yoshiaki Oda (Kochi/JP)

P70
Deformity correction in cases of lower cervical spine trauma of patients with ankylosing spondylitis
Petr Vachata, Jan Lodin (Usti nad Labem/CZ)

P71
Recurrent dislocation after anterior surgery in subaxial traumatic fractures
Barbara Cappelletto (Udine/IT), Massimo Balsano (Verona/IT), Fabrizia Giorgiutti (Udine/IT)

P72
Surgical treatment of subaxial cervical spine fractures following AOspine sub axial classification criteria: What, when, whyA 4 years experience in a single center
Gianmarco Marchese, Niccolò Giabbani, Giovanni Barbagli, Luigi Pansini, Giancarlo Lastrucci, Stefano Romoli (Firenze/IT)
17:30–19:30
Raum
Trauma of the upper cervical spine
ePoster-stations

P73
The outcomes of surgical treatment for axis fractures
Hisakazu Shitozawa, Yasuo Ito, Takeshi Kikuchi (Kobe/JP)

P74
Recommendations for diagnostics and treatment of axis ring fractures
Christoph Hoffmann, Philip Schleicher, Matti Scholz, Frank Kandziora (Frankfurt/DE)

P75
Atlantoaxial dislocation due to os odontoideum in patients with Down"s syndrome: literature review and case reports
Olga Sergeenko, Aleksandr V. Burtsev, Sergey Ryabykh, Alexander Gubin (Kurgan/RU)

P76
Anomaly-related traumatic atlantoaxial rotatory fixation: A case report
Yuji Tsuchikawa, Kazuyoshi Nakanishi, Naosuke Kamei, Toshio Nakamae, Taiki Morisako, Takahiro Harada, Nobuo Adachi (Minami-ku, Hiroshima/JP)

P77
Remote traumatic Spondylolisthesis of C2 on C3, report of five cases
Abolfazl Rahimizadeh (Teheran/IR)

P78
Temporary occipito-cervical fixation in skull base avulsion fracture without neurologic damage may lead to healing and complete recovery of cervical spine range of motion
Federico De Iure, Michele Cappuccio, Antonio Martucci, Luca Amendola (Bologna/IT)

P80
Type II dens fractures: demographics and treatment experience of a single center over 10 years
Daniele Bongetta, Alessandro Versace, Francesco Montemezzo, Roberto Assietti (Milan/IT)

P81
Long term patient reported clinical outcomes in patients with type 11 odontoid fractures
Michael Haak, Ryan Martyn, Kristi Collins (Danville, IL/US)

P82
C1-C2 Traumatic fractures treatment and clinico-radiological outcome in a consecutive series of 94 patients
Edoardo Cipolleschi, Giovanni Barbagli, Luigi Pansini, Stefano Romoli (Firenze/IT)

P83
Unstable odontoid fractures: A case series
Stefano Forcato, sokol trungu (Tricase/IT), Placido Bruzzaniti, Massimo Miscusi, Antonino Raco (roma/IT)

P85
Discrepancies in the surgical management of central cord syndrome: assessment of non-operative, surgical, and crossover to surgery patients
Peter Passias, Cole Bortz, Avery Brown, Katherine Pierce, Haddy Alas, Nicholas Shepard (New York, NY/US), M. Burhan Janjua (Dallas, TX/US), Paul Park (Ann Arbor/DE), Dimitrios Nikas (Chicago, IL/US), Pawel Jankowski, John Buza III, Aaron Hockley (New York, NY/US), Alexandra Soroceanu (Calgary/CA), Rafael De la Garza Ramos (New York, NY/US), Daniel Sciubba (Baltimore, MD/US), Anthony Frempong-Boadu, Dennis Vasquez-Montes, Bassel Diebo, Michael Gerling (New York, NY/US)

P86
Anterior atlantoaxial transarticular screw fixation: Impasse or standard option?
David Bludovsky, David Stepanek (Plzen/CZ)
17:30–19:30
Raum
Tumors and infections
ePoster-stations

P87
Managing the cervical spine in multiple myeloma patients
Derek Cawley (Dublin/IE, Stanmore/GB), Joseph S. Butler (Stanmore/GB, Dublin/IE), Adam Benton, Farhaan Altaf, Susanne Selvadurai, Kia Rezajooi (Stanmore/GB), Chara Kyriakou (London/GB), Sean Molloy (Stanmore/GB)

P88
Acute quadriparesis due to calcium pyrophosphate dihydrate deposition disease of the cervical ligamentum flavum mimicking an epidural abscess: a case report
Shinji Kumamoto, Hidefumi Honke, Kengo Higuchi (Fukuoka/JP)

P89
Atlantoaxial dislocation secondary to the tumors of the upper cervical region: Report of 6 cases
Abolfazl Rahimizadeh (Tehran/IR)

P90
Palliative surgery for metastasis in the cervical spine
Toshiya Tachibana, Keishi Maruo, Fumiaki Arizumi, Kazuki Kusuyama, Kazuya Kishima, Shinichi Yoshiya (Nishinomiya/JP)

P91
Atlantoaxial subluxation due to sinusitis and presenting with severe myelopathy: a case report
Takeshi Aoyama, Naoshi Obara (Sapporo/JP)

P92
Multiple surgeries for multiple recurrences of spinal meningioma: A case report
Tomoyuki Kusukawa, Toshiya Tachibana, Keishi Maruo, Fumiaki Arizumi, Kazuki Kusuyama, Kazuya Kishima (Nishinomiya/JP)

P93
Hypoplasia of the atlas may be a risk factor for the retro odontoid pseudotumor
Hiroki Tawaratsumida, Yuhei Yahiro, Ichiro Kawamura, Hiroyuki Tominaga, Kazunori Yone, Noboru Taniguti (Kagoshima/JP)

P94
Analysis of the results of surgical treatment of patients with cervical spine metastases
Vladimir Klimov, Murodzhon Kosimshoev, Aleksey V. Evsyukov (Novosibirsk/RU)

P95
Epidemiology and surgical management of tumors of the cervical spine: review of 241 cases
Hassan Allouch, Kais Abu Nahleh, Mootaz Shousha, Ali Dhainy, Mohammed Alhashash, Hany Gendy, Mahmoud Alkharsawi, Heinrich Böhm (Bad Berka/DE)

P96
Preoperative planning using virtual reality technology and intraoperative navigation using mixed reality technology to cervical tumor surgery
Taiki Morisako, Kazuyoshi Nakanishi, Naosuke Kamei, Toshio Nakamae, Yuuji Tsuchikawa, Takahiro Harada, Nobuo Adachi (Hiroshima/JP)

P97
Intra-medullary spinal cavernomas in the cervical spine: technical considerations about 4 original surgical cases
Cedric Barrey, Nathalie Andre-Obadia, Sebastien Boulogne, Rostom Messerer (LYON/FR)

P98
Big cervical disc herniation that masks a high thoracic intraspinal tumor
Bastian Storzer, Christoph Mehren (Munich, Salzburg/DE)
17:30–19:30
Raum
Value and outcomes in cervical spine surgery
ePoster-stations

P100
Retrospective review of 32 cases with os odontoideum
Abolfazl Rahimizadeh (Teheran, Tehran/IR), Reza Mollahousaini (Tehran/IR)

P101
Intraoperative spinal navigation in dorsal cervical instrumentation using iCT: A report on one year of workflow, feasibility and accuracy
Ulf Bertram, Hans Clusmann, Alexander Riabikin, Matthias Geiger, Christian Andreas Müller, Christian Blume (Aachen/DE)

P102
Surgical strategy for severe OPLL (S-OPLL; ossification of the posterior longitudinal ligament with K-line (-) and/or a maximal spinal canal occupation ratio of 50% or more)
Shizumasa Murata, Yasutsugu Yukawa, Hiroshi Iwasaki, Hiroshi Yamada (Wakayama/JP)

P103
Segmental instrumented fusion with laminoplasty for cervical OPLL with K-line (+)/large segmental motion - retrospective analysis compared with laminoplasty without segmental fusion
Kengo Fujii (Takahagi/JP), Masao Koda (Tsukuba/JP), Junya Saito (Chiba/JP), Tetsuya Abe, Toru Funayama, Hiroshi Noguchi, Kousei Miura, Katsuya Nagashima, Kentaro Mataki, Yosuke Shibao (Tsukuba/JP), Takeo Furuya (Chiba/JP), Masashi Yamazaki (Tsukuba/JP)

P104
Submandibular approach to the craniovertebral junction: single-stage ventral decompression and stabilization with an innovative hybrid construct: A cadaveric study of feasibility and technical illustration
Luca Ricciardi (Rome/IT, Jacksonville, FL/US), Carmelo Lucio Sturiale (Rome/IT), Alessandro Izzo (Jacksonville, FL/US, Rome/IT), Filippo Maria Polli, Massimiliano Visocchi, Alessandro Olivi (Rome/IT), Alfredo Quinones-Hinojosa (Jacksonville, FL/US), Francesco Ciro Tamburrelli (Roma/IT), Selby Chen (Jacksonville, FL/US)

P105
Efficacy of posterior articular segment decompression for cervical spondylotic myelopathy: a 5-year follow-up study of microendoscopic laminotomy versus conventional laminoplasty
Akihito Minamide, Munehito Yoshida (Wakayama/JP), Andrew K. Simpson (Boston, MA/US), Motohiro Okada, Hiroshi Iwasaki, Shunji Tsutsui, Msanari Takami, Hiroshi Hashizume, Yasutsugu Yukawa, Hiroshi Yamada (Wakayama/JP)

P106
The radiographical outcomes of C1-2 fusion for atlantoaxial subluxation in rheumatoid arthritis patients
Haruo Misawa, Tomoyuki Takigawa, Yasuyuki Shiozaki, Shinichirou Takao, Toshifumi Ozaki (Okayama/JP)

P107
Surgical outcomes of postural instability in patients with cervical myelopathy
Toma Yano, Takashi Fujishiro, Atsushi Nakano, Yoshiharu Nakaya, Sachio Hayama, Takuya Obo, Ichiro Baba, Masashi Neo (Takatsuki/JP)

P108
Effectiveness of laminoplasty for cervical myelopathy due to disc herniation: Is there limitation in cases with a herniated disc exceeding the K-line?
Tsuyoshi Sato, Atsuki Sano (Shibata/JP)

P109
Return to rugby after cervical arthroplasty
Carlos Ribeiro, Raúl Santos, Rui Reinas, D'jamel Kitumba, Tiago Lima, Marques Baptista (Vila Nova de Gaia/PT)

P110
CT morphological analysis of the inferior limit by endonasal access to the craniovertebral junction
Masanori Yonenaga, Hitoshi Yamahata, Shingo Fujio, Yushi Nagano, Tomoko Hanada, Koji Yoshimoto (Kagoshima/JP)

P111
Accuracy of subaxial cervical pedicle screw placement with computer navigation system
Yasuyuki Shiozaki (Niihama city/JP), Haruo Misawa, Shinichiro Takao (Okayama/JP)

P113
Analysis of the Indications, surgical profile, and complications of Occipitocervical Fusion; retrospective review of 230 patients long-term follow up
Mohammed Alhashash, Reza Bahrami, Mootaz Shousha, Hany Gendy, Hassan Allouch, Heinrich Böhm (Bad Berka/DE)

P114
Changes of OPLL foci at residual vertebral boy in surgical site after a hybrid decompression and arthrodesis for multilevel myelopathy due to cervical OPLL
Macondo Mochizuki, Atsuomi Aiba, Ryo Kadota (Numazu/JP), Norihiko Minami (Kashiwa/JP), Kunio Kouda (Tsukuba/JP)

P115
Long-term outcome of anterior cervical decompression with fusion for cervical ossification of posterior longitudinal ligament
Hideaki Nakajima, Shuji Watanabe, Kazuya Honjoh, Ippei Kitade, Daisuke Sugita, Akihiko Matsumine (Fukui/JP)

P116
Supralaminar C1 lateral masses screw insertion
Aleksandr V. Burtsev, Olga Sergeenko, Sergey Ryabykh, Alexander Gubin (Kurgan/RU)

P117
Three-rod constructs for posterior craniocervical and cervico-thoracic stabilization
Aleksandr V. Burtsev, Olga Sergeenko, Sergey Ryabykh, Alexander Gubin (Kurgan/RU)

P118
Surgical treatment of anomaly-related atlantoaxial dislocations in pediatric patients
Olga Sergeenko, Aleksandr V. Burtsev, Sergey Ryabykh, Alexander Gubin (Kurgan/RU)

P119
High-angle screw setting at anterior cervical plating prevents graft subsidence and correction loss following anterior cervical discectomy and fusion
Tatsuhiro Sekiya, Hisanori Mihara, Yasunori Tatara, Takanori Nimura, Atsushi Goda (Yokohama/JP)

P120
Which NDI domains best predict change in physical function in patients undergoing cervical spine surgery?
Michael E. Steinhaus, Sravisht Iyer, Karim Shafi, Francis Lovecchio, Daniel Stein, Thomas Ross, Jingyan Yang, Virginie Lafage, Todd J. Albert, Han Jo Kim (New York, NY/US)

P121
The use of Patient Reported Outcomes Measurement Information System (PROMIS) in spine surgery: A systematic review
Kelsey Young, Catherine Gang, Avani Vaishnav, Bridget Jivanelli, Michael Steinhaus, Francis Lovecchio, Sheeraz Qureshi, Steven McAnany, Han Jo Kim, Sravisht Iyer (New York, NY/US)

P122
A Prospective, psychometric validation of NIH PROMIS physical function, pain interference and upper extremity CAT in cervical spine patients: successes and key limitations
Sravisht Iyer (New York, NY/US), Jayme C.B. Koltsov (Palo Alto, CA/US), Michael Steinhaus, Thomas Ross, Kelsey Young, Daniel Stein, Jingyan Yang, Virginie Lafage, Todd J. Albert, Han Jo Kim (New York, NY/US)

P123
Correlation between clinical outcomes and quantitatively analyzed spinal cord pulsation in anterior cervical decompression surgery
Yohei Ito, Hisanori Mihara, Yasunori Tatara, Takanori Niimura, Tatsuhiro Sekiya, Atsushi Goda, Yutaka Inaba (Kanagawa/JP)

P124
The association between the accuracy of the bony gutter with three-dimensional printed model-assisted surgical planning and posterior shift of the spinal cord in treating cervical laminoplasty
Gentaro Kumagai, Kanichiro Wada, Hitoshi Kudo, Toru Asari, Yasuyuki Ishibashi (Hirosaki/JP)

P126
Inserting paravertebral foramen screws (PVFS) as an anchor screw to C6 vertebra is effective in reducing the risk of implant failure
Katsuya Nagashima, Masao Koda, Tetsuya Abe, Kentaro Mataki, Hiroshi Kumagai, Kousei Miura, Hiroshi Noguchi, Toru Funayama, Masashi Yamazaki (Tennoudai, Tsukuba/JP)

P127
Cost comparison of inpatient versus outpatient anterior cervical discectomy and fusion at an academic medical center
Michael Safaee, Sumedh Shah, Harsh Wadhwa, Christopher Ames, Aaron Clark (San Francisco, CA/US)

P128
Predictors of superior recovery kinetics in adult cervical deformity correction: an analysis using a novel area under the curve methodology
Katherine Pierce, Peter Passias, Cole Bortz, Avery Brown, Haddy Alas, Renaud Lafage, Virginie Lafage (New York, NY/US), Douglas Burton (Kansas City, KS/US), D. Kojo Hamilton (Pittsburgh, PA/US), Jeffrey Gum (Pittsburgh, PA, Louisville, KY/US), Justin Scheer (Chicago, IL/US), Alan Daniels (Providence, RI/US), Shay Bess (Denver, CO/US), Alexandra Soroceanu (Calgary/CA), Eric Klineberg (Davis, CA/US), Christopher Shaffrey (Charlottesville, VA/US), Breton Line (Denver, CO/US), Frank Schwab (New York, NY/US), Justin Smith (Charlottesville, VA/US), Christopher Ames (San Francisco, CA/US), International Spine Study Group (ISSG) (Denver, CO/US)
18:00–19:30
Raum
Welcome reception
Foyer