Reoperation Rates Following Open-Door Cervical Laminoplasty.

BACKGROUND

Laminoplasty is a safe and effective procedure for multilevel degenerative cervical stenosis causing myelopathy, that allows for motion preservation. The purpose of this study was to determine the reoperation rate and associated risk factors after cervical laminoplasty.

METHODS

We present a retrospective consecutive series of patients who underwent a laminoplasty procedure between January 1, 2005, and October 31, 2012, and had a minimum 2-year follow-up. Demographic data were collected and operative records were reviewed to determine the cervical levels involved in the laminoplasty procedure, any concomitant procedures, and estimated blood loss. Clinical records were reviewed and telephone interviews were conducted on those patients with less than 2-year in-person follow-up. Patients requiring reoperations and the reason for the reoperations were determined, as well as the incidence of postoperative C5 palsy.

RESULTS

A total of 222 of 266 patients (83%) with a minimum 2-year follow-up had an average follow-up of 4.97 years. Overall, 26 patients underwent 30 reoperations (13.5%). A total of 15 patients underwent 16 reoperations (7.2%) in the acute postoperative period for infection requiring at least 1 irrigation and debridement, hardware-related issues, or posterior cervical wound issues. A total of 13 patients had 14 reoperations (6.3%) outside of the acute postoperative period for the development of a new radiculopathy, recurrent myelopathy, neurologic symptoms with a kyphotic deformity, or a posttraumatic focal kyphotic deformity. Patients who had a concomitant laminectomy demonstrated a significantly ( = .03) higher reoperation rate than those who did not. There were no other statistically significant associations. The C5 palsy rate was 8.1% (18 of 222).

CONCLUSIONS

Although the preserved motion following laminoplasty may allow for the development of new neurologic symptoms, the reoperation rate continues to compare favorably with laminectomy and fusion and remains a reasonable option for the surgical management of multilevel cervical stenosis causing myelopathy.

LEVEL OF EVIDENCE