颈椎空心螺纹内固定器(CHTF)的研制与临床应用

目的：研制钛合金颈椎空心螺纹式内固定器并将其用于治疗颈椎不稳的患者，包括颈椎病及急性颈椎间盘突出症行颈前路减压术后患者。方法：采用无磁性的医用钛合金加工成空心螺纹状结构，其壁多孔，有利于骨组织长入，促进椎间融合。用于颈椎病及急性颈椎间盘突出症前路减压术后稳定融合者４２例。术后摄颈椎Ｘ线片及ＣＴ检查，观察手术节段的稳定性和融合情况。结果：术后次日可下床活动。随访３～２６个月，手术节段稳定，术后３～６个月融合。结论：颈椎空心螺纹式内固定器使施术节段立即获得制动，方便术后护理并早日重返工作岗位。该术式安全简便，并且避免了取自体髂骨所引起的多种并发症。

颈椎椎体间融合器的临床应用(附135例报告)

目的 :观察比较 3种颈椎椎体间融合器前路减压后椎体间融合的固定及融合效果。方法 :采用BAK、CHTF和InterFix 3种颈椎椎体间融合器行颈椎病及颈椎间盘突出症前路减压后椎体间融合 135例 ,其中BAK 6 5例 ,CHTF 42例 ,InterFix技术 2 8例。术后颈椎X线片及CT检查 ,观察手术椎节的稳定性和融合情况。结果 :随访 8～ 31月 ,施术节段稳定 ,3种颈椎椎体间融合器固定融合率无显著差异。结论 :颈椎椎体间固定融合技术使施术椎节立即稳定 ,避免了自体植骨引起的并发症 ,可作为替代传统颈前路椎体间植骨融合术的方法之一。

Design and clinical application of cervical hollow threaded fixator

Cervical hollow threaded fixator (CHTF) was designed and applied to stabilize the cervical spine following anterior decompression due to cervical spondylosis or acute cervical disc herniation Methods Medical use titanium alloy with no magnetism was made into a hollow threaded structure with holes on the wall of the fixator Forty two patients with cervical spondylosis and acute cervical disc herniation were stabilized using the CHTF technique after anterior decompression X ray films and CT scans were taken after the operation to observe the stability and fusion rate of the segments Results Patients were allowed to walk one day after the operation and were followed up for 6 to 36 months The operated segments were stable and solid fusion was observed 3-6 months after surgery Conclusions Immediate stability of the operated segments can be obtained using the CHTF technique Patients were easy to manage after the operation and returned to their jobs in a short time The CHTF technique is safe and simpe to performe and eliminates the complications of an autograft It may be an alternative to traditional cervical interbody fusion with bone graft