摘要
目的研制颈椎前路蝶形钢板内固定系统，评价其生物力学稳定性，并进行临床初步应用观察。方法该系统包括蝶形钢板及三种不同用途的螺钉，采用单皮质螺钉固定及点接触原理，由医用钛合金材料 (TC4)制成。采用 14具青年男性尸体的新鲜颈椎标本，利用脊柱三维运动分析系统，比较蝶形钢板固定与 Orion钢板固定对失稳颈椎的稳定作用。临床上应用于颈椎患者的治疗 61例，其中颈椎病 26例，颈椎间盘突出症 14例，颈椎骨折脱位 18例，颈椎结核 3例。结果生物力学测试表明，该蝶形钢板内固定系统可以提供足够的颈椎稳定性，与 Orion钢板内固定系统的稳定作用相似。临床应用中， 61例患者均行颈前路减压、自体髂骨植骨融合术，并采用蝶形钢板内固定。 48例患者门诊随访 6～ 10个月，植骨块均在术后 3～ 4个月内获得骨性愈合，无钢板断裂，无螺钉松动、断裂、脱落等并发症。结论该颈椎前路蝶形钢板内固定系统具有良好的生物力学稳定性，固定效果佳，操作简便，且适合国人的解剖特点，能满足临床的需要。
Objective To evaluate the biomechanical stability and the preliminary clinical efficacy of self-designed anterior cervical butterfly-like locking plate fixation system. Methods The anterior cervical fixation system is composed of one butterfly-like plate and three types of screw made of titanium alloy(TC4, Ti6Al4V)on the basis of unicortical screw fixation and point contact plate fixation principle. Biomechanical stability analyses of the system and Orion locking plate system (Sofamor－ Danek Corp) were performed in fresh cervical spine specimens from fourteen young male cadavers. 61 patients with cervical disorders were stabilized with the fixation system. The mean age of the patients during surgery was 48.2 years (range 18 to 68 years). The diagnosis included spondylosis in 26 cases, cervical intervertebral disk protrusion 14, fracture and/or dislocation 18 and tuberculosis 3. Results This anterior butterfly-like cervical plate fixation system holds similar biomechanical stability effects as Orion system. Of 61 cases received the plate fixation system after anterior decompression and autologous interbody fusion, 48 were followed-up for six to ten months, and showed solid interbody fusion in three to four months. No early complications such as implant loosening or failure related to the fixation system were noted. Conclusion The anterior cervical plate fixation system can provide sufficient biomechanical stability to cervical spine after anterior decompression surgery.
出处
《中华骨科杂志》
CAS
CSCD
北大核心
2001年第4期205-208,共4页
Chinese Journal of Orthopaedics
