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[Cervical posterior laminoplasty operation using T-saw and coralline hydroxyapatite spacer]
Objective:
To assess the efficacy of using T-saw and coralline hydroxyapatite (CHA) spacer in the cervical spinous process-splitting laminoplasty.
Methods:
38 patients were operated with cervical laminoplasty using T-saw and CHA spacer, among them there were 31 multisegmental cervical spondylotic myelopathy patients, 5 ossification of posterior longitudinal ligament (OPLL) patients, 2 anterior fusion failure patients. All the patients were evaluated by JOA scores.
Results:
we followed the 38 patients for average 26 months. Numbness,strength and gait were improved obviously. The flat rate of spinal cord in MRI improved 0.23;CHA fusion percentage 74%; no primary spinal cord injury was found. Average operation time was 2 hour 50 min;average bleeding during the operation was 280 ml; The average JOA score improve rate was 61%.
Conclusion:
The methods, using T-saw and CHA spacer in the cervical spinous process-splitting laminoplasty, which was characterized by simple, short time on operation and thorough decompression of spinal cord, was a ideal optional method in the cervical laminoplasty operation.