Cervical Stand-Alone Polyetheretherketone Cage versus Zero-Profile Anchored Spacer in Single-Level Anterior Cervical Discectomy and Fusion : Minimum 2-Year Assessment of Radiographic and Clinical Outcome.
10.3340/jkns.2015.58.2.119
- Author:
Hyun Jun CHO
1
;
Junseok W HUR
;
Jang Bo LEE
;
Jin Sol HAN
;
Tai Hyoung CHO
;
Jung Yul PARK
Author Information
1. Department of Neurosurgery, Korea University Anam Hospital, College of Medicine, Korea University, Seoul, Korea. jblee42@gmail.com
- Publication Type:Original Article
- Keywords:
Zero-profile;
Anterior cervical discectomy and fusion;
Stand-alone cage;
Kyphosis;
Subsidence
- MeSH:
Animals;
Arm;
Body Height;
Diskectomy*;
Follow-Up Studies;
Humans;
Kyphosis;
Lordosis;
Retrospective Studies
- From:Journal of Korean Neurosurgical Society
2015;58(2):119-124
- CountryRepublic of Korea
- Language:English
-
Abstract:
OBJECTIVE: We compared the clinical and radiographic outcomes of stand-alone polyetheretherketone (PEEK) cage and Zero-Profile anchored spacer (Zero-P) for single level anterior cervical discectomy and fusion (ACDF). METHODS: We retrospectively reviewed 121 patients who underwent single level ACDF within 2 years (Jan 2011-Jan 2013) in a single institute. Total 50 patients were included for the analysis who were evaluated more than 2-year follow-up. Twenty-nine patients were allocated to the cage group (m : f=19 : 10) and 21 for Zero-P group (m : f=12 : 9). Clinical (neck disability index, visual analogue scale arm and neck) and radiographic (Cobb angle-segmental and global cervical, disc height, vertebral height) assessments were followed at pre-operative, immediate post-operative, post-3, 6, 12, and 24 month periods. RESULTS: Demographic features and the clinical outcome showed no difference between two groups. The change between final follow-up (24 months) and immediate post-op of Cobb-segmental angle (p=0.027), disc height (p=0.002), vertebral body height (p=0.033) showed statistically better outcome for the Zero-P group than the cage group, respectively. CONCLUSION: The Zero-Profile anchored spacer has some advantage after cage for maintaining segmental lordosis and lowering subsidence rate after single level anterior cervical discectomy and fusion.
