桡骨远端背侧带血管蒂骨瓣转位治疗陈旧性舟骨骨折

Treatment of chronic scaphoid nonunion with vascularized bone grafts from dorsal distal radius

目的 评价桡骨远端背侧带血管蒂骨瓣转位治疗陈旧性舟骨骨折的中远期疗效.方法 回顾性分析1995-2006年行桡骨远端背侧带血管蒂骨瓣转位治疗的13例陈旧性舟骨骨折,其中9例伴近侧极缺血坏死.血管蒂为1,2区间间伸肌支持带上血管.固定方式包括螺钉内固定及外支架固定.评价内容包括Mayo腕关节临床功能评分以及影像学评价.结果 手术距受伤时间平均22.2个月,平均随访76.6个月.骨折愈合13例,平均愈合时间11.2周.功能评价：优3例,良8例,可2例.末次随访时,腕关节功能评分、关节活动度、握力均较术前有显著提高.舟骨角以及舟月角明显改善.结论 桡骨远端背侧带血管蒂骨瓣转位治疗陈旧性舟骨骨折手术过程相对简单,疗效满意.术中予腕关节松解,术后腕关节在外支架的保护下进行早期功能锻炼可促进关节功能的恢复.

Objective To evaluate the medium and long term follow-up results of vascularized bone grafts dorsal distal radius in treatment of chronic scaphoid nonunion. Methods A retrospective study was carried out in 13 patients with chronic scaphoid nonunion treated with vascularized bone grafts dorsal distal radius in our hospital from 1995 to 2006. Nine patients were accompanied by avascular necrosis of the proximal pole. The vascular pedicle was 1,2 intercompartmental supraretinacular artery. The nonunion was stabilized by screws or external fixators. Radiographic finding and Mayo scoring system on wrist mobilization were used to evaluate the clinical outcomes. Results The interval between injury and treatment was average 22.2 months. All patients were followed up for average 76.6 months, which showed that 12 patients obtained fracture union, with average union time of 11.2 weeks. Functional evaluation results were defined as excellent in three patients, good in eight and fair in two. The last follow-up revealed significant improvement of the range of motion of the wrist, Mayo scores, grip strength, intrascaphoid angles and scapholunate angles. Conclusions Vascularized bone grafts from dorsal distal radius has relatively surgical procedure and can achieve satisfactory results in management of scaphoid nonunion. The perioperative arthrolysis and early postoperative mobilization of the wrist under exernal fixation play critical role in restoration of wrist function.