gms | German Medical Science

63rd Annual Meeting of the German Society of Neurosurgery (DGNC)
Joint Meeting with the Japanese Neurosurgical Society (JNS)

German Society of Neurosurgery (DGNC)

13 - 16 June 2012, Leipzig

Preliminary clinical results of new artificial cervical Total Disc Replacement (TDR) used for single level degenerative disc disease over two years period

Meeting Abstract

  • R. Bostelmann - Neurochirurgische Klinik am Universitätsklinikum Düsseldorf
  • J.F. Cornelius - Neurochirurgische Klinik am Universitätsklinikum Düsseldorf
  • H.J. Steiger - Neurochirurgische Klinik am Universitätsklinikum Düsseldorf
  • M. Leimert - Klinik für Neurochirurgie am Universitätsklinikum der TU Dresden

Deutsche Gesellschaft für Neurochirurgie. Japanische Gesellschaft für Neurochirurgie. 63. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Japanischen Gesellschaft für Neurochirurgie (JNS). Leipzig, 13.-16.06.2012. Düsseldorf: German Medical Science GMS Publishing House; 2012. DocDO.12.05

doi: 10.3205/12dgnc110, urn:nbn:de:0183-12dgnc1108

Published: June 4, 2012

© 2012 Bostelmann et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( You are free: to Share – to copy, distribute and transmit the work, provided the original author and source are credited.



Objective: This on-going study portrays clinical outcome of 17 patients implanted with Cerkinetic TDR for treatment of cervical mono segmental degenerative disc disease over two years.

Methods: From June 2009 to June 2011, 17 patients suffering from radiologically confirmed mono segmental herniated degenerated cervical disc (DDD) with no remission of symptoms after six weeks conservative treatment were implanted with Cerkinetic cervical TDR. Patients' clinical status was assessed pre and postoperatively by neurological examination, Neck Disability Index (NDI), neck and arm Visual Analogue Scale (VAS), patient satisfaction survey, and radiological imaging. Ongoing postoperative assessment is performed at 1 week, 3, 6, 12 and 24 months respectively. Radiological evaluation in follow-up visits is performed at 1 week, 3, 12 and 24 months, respectively.

Results: Procedure was successfully performed in all patients (9 male, 8 female), mean age 46 years, (range 33–53). All patients attended follow up visits. Ongoing follow-up is based on individual procedure dates, until the period of 24 months follow-up is completed for all patients. Current mean follow up period is 11.25 months (range 3 weeks–24 months). Patients preoperative mean NDI was 64% (crippled). Mean postoperative NDI is 17.5% (minimal). Preoperative mean neck pain VAS was 8.5 and this was decreased to 1.5 postoperatively. Mean preoperative arm pain VAS was 8 and decreased at postoperative follow-up to 1.3. Neck range of motion (ROM) at follow-up was back to normal (axial rotation 80°, lateral bending 45° and flexion 60°/extension 75° ± 10 % of these ROM values). Correlative radiologically assessment documented full functioning of implanted TDR in all subjects without signs of dislocation, subsidence or heterotopic ossification. Patients' satisfaction was 10 out of 1–10 satisfaction scale. No device failure was observed. No adverse events had occurred.

Conclusions: Based on these results of 17 patients implanted over a two years period, Cerkinetic is a safe and effective artificial TDR in treatment of single segmental cervical DDD. Results indicate maintenance of cervical disc height, motion stability and neck sagittal profile. Patients' follow-up manifests pain relief and improved quality of life. Further study is recommended in order to establish a larger statistical database.