内固定治疗闭合性近侧指间关节背侧脱位伴中节指骨掌侧基底骨折

The internal fixation in closed dislocation of the proximal interphalangeal joint with volar basal fracture of middle phalanx

目的探讨内固定治疗闭合性近侧指间关节背侧脱位伴中节指骨掌侧基底骨折的疗效。方法对20例闭合性近侧指间关节背侧脱位伴中节指骨掌侧基底骨折的患者行克氏针内固定治疗,术后指体用微型支具或石膏托固定3~4周,并进行功能恢复性锻炼。结果 20例均获随访,时间3~6个月。X线片示骨折复位愈合、关节在位。近侧指间关节主动屈伸活动范围：伸0~20（18±1）°,屈30~90（68±5）°;被动屈伸活动范围：伸5~20（15±2）°,屈50~100（78±8）°。结论内固定手术治疗闭合性近侧指间关节背侧脱位伴中节指骨掌侧基底骨折效果较好。

Objective To investigate therapeutic efficacy of the internal fixation in the closed dislocation of the proximal interphalangeal joint（PIP joint） with the volar basal fracture of the middle phalanx.Methods 20 patients with closed dislocation of the PIP joint with the volar basal fracture of the middle phalanx accepted Kischner wire fixation treatment,splint protection for 3 to 4 weeks and rehabilitation after operation.Results 20 patients all have been followed up after operation over a period of 3 to 6 months,the image evaluation showed the reduced and united of the bone fracture.The active range of motion at the PIP joint was 0~20（18±1）°in extension and 30~90（68±5）°in flexion;the passive range of motion was 5~20（15±2）°in extension and 50~100（78±8）°in flexion.Conclusions The therapeutic efficacy is satisfactory with internal fixation in the treatment to the closed dislocation of the PIP joint with the volar basal fracture of the middle phalanx.