The use of three kinds internal fixators in improving spinal stability postoperatively / 中国组织工程研究

ABSTRACT

Aim To evaluate the clinical value of two cervical spinallocking plates, Orion and Zephir, and a new anterior cervical instrumentalsystem combining an intradiscal cage with an integrated plate(PCB) afteranterior cervical decompression surgery. Methods 47 patients were followedup for 7 - 26 months with an average of 15 months after surgery. Of them, 30were treated with Orion, 1 1 with Zephir and another 6 with PCB. Results 26cases with preoperative intervertebral space constriction and 18 cases withchanges of cervical physiological protrusion all achieved satisfying effect ofrebuilding intervertebral space height after operation. The cases with obviousintervertebral space height loss were not seen after follow up. The physio-logical curvature corrected by operation was well kept. Neurological functionwas improved in 43 cases on different extent after operation. The other 4cases with no obvious recovery of neurological function were all that withcomplete paraplegia after trauma. Conclusion PCB is suitable for treatmentof the acute cervical protrusion or the cervical spondylotic myelopathy at onelevel. Zephir and Orion are suitable to all kinds of cervical vertebra lesions atmore than one level and complex lesion at one level, which helps the re-covery of cervical physiological curvature and height of disc space.