Hinge Fracture during Cervical Open-door Laminoplasty: Does it Affect Clinical and Radiographic Outcomes?.
10.14245/kjs.2014.11.2.45
- Author:
Sung Hoon CHO
1
;
Jung Hwan LEE
;
Chung Kee CHOUGH
;
Won Il JOO
;
Hae Kwan PARK
;
Kyung Jin LEE
;
Hyoung Kyun RHA
Author Information
1. Catholic Neuroscience Center, Department of Neurosurgery, Yeouido St. Mary's Hospital, The Catholic University College of Medicine, Seoul, Korea. juwan@pusan.ac.kr
- Publication Type:Original Article
- Keywords:
Cervical vertebrae;
Treatment outcome;
Laminoplasty;
Fracture
- MeSH:
Cervical Vertebrae;
Female;
Follow-Up Studies;
Humans;
Neck Pain;
Retrospective Studies;
Tomography, X-Ray Computed;
Treatment Outcome
- From:Korean Journal of Spine
2014;11(2):45-51
- CountryRepublic of Korea
- Language:English
-
Abstract:
OBJECTIVE: The purpose of this study was to determine whether the status of the hinge gutter affected clinical and radiographic outcomes of cervical open door laminoplasty. METHODS: We retrospectively analyzed 43 patients who had undergone cervical open door laminoplasty. 23 CT scans were performed at 2 days post-operation. The number of CT scans at 3, 6, 12 and 24 months were 16, 12, 21 and 11, respectively. We collected perioperative and follow-up data, including clinical and radiographic results. RESULTS: There were 7 patients without a hinge fracture and 16 patients with one or more hinge fractures at 2 days postoperation. There were 90 hinges, and the rate of ideal greenstick deformation of the hinge was 63% on 2-day-postoperative CT scans. Postoperative VAS scores of neck pain (p=0.012) in patients without a hinge fracture were higher than in patients with hinge fractures. The hinge healing rates were 37% at 3 months, 57.4% at 6 months, 86.4% at 12 months, and 85.4% at 24 months. Among the patients, 14 patients had healed hinges, and 7 patients had one or more hinge(s) that was/were not healed at 12 months post-operation. However, in clinical and radiographic outcomes, there was no difference between these patients. CONCLUSION: Cervical open door laminoplasty was safe and provided stable reconstruction of laminar expansion. In radiographs, the difference between hinges that had healed and hinges that had not healed was statistically negligible. Hinge fractures might not influence the clinical and radiographic outcomes of cervical open door laminoplasty.
