Piras L, Cappellari F, Peirone B, Ferretti A
University of Turin, Animal Pathology, Grugliasco, Italy.
Vet Comp Orthop Traumatol. 2011;24(3):228-35. doi: 10.3415/VCOT-10-06-0089. Epub 2011 Mar 3.
To evaluate the effectiveness of circular external skeletal fixation (CESF) in treating fractures of the distal radius and ulna in toy breed dogs, and to document the type and frequency of complications associated with this technique.
The medical records of small breed dogs with fractures of the distal radius and ulna admitted to the University of Turin and to the Clinica Ferretti between 2002 and 2009 were retrospectively reviewed. The criteria for inclusion of cases in the study were: body weight of 5 kg or less, transverse or short oblique fracture of the distal third of the radius and ulna, no previous repair attempts, and treatment with CESF as the sole method of fixation.
Twenty fractures in 16 dogs satisfied the criteria for inclusion into this study. No signs of infection or failure of fixation were detected in any case. Mean frontal plane alignment was 4.7° ± 2.7° and mean sagittal plane alignment was 12.7° ± 7.2°. Postoperative complications occurred in one patient. All fractures achieved union. Mean time until radiographic evidence of a bridging callus and subsequent implant removal was 71 days (range: 30-120).
The results of this study support the use of CESF for treatment of fractures of the distal radius and ulna in toy breed dogs as an alternative to other methods of fracture fixation. However, this technique requires a series of follow-up examinations to evaluate the stability of the apparatus, the soundness of the wires and to determine the appropriate time for implant removal.
评估环形外固定支架（CESF）治疗玩具犬桡骨远端和尺骨骨折的有效性，并记录与该技术相关的并发症类型及发生率。
回顾性分析2002年至2009年期间收治于都灵大学和费雷蒂诊所的小型犬桡骨远端和尺骨骨折的病历。纳入本研究病例的标准为：体重5kg或以下，桡骨和尺骨远端三分之一处横行或短斜形骨折，此前未尝试过修复，且以CESF作为唯一固定方法进行治疗。
16只犬的20处骨折符合纳入本研究的标准。所有病例均未检测到感染迹象或固定失败。平均额状面成角为4.7°±2.7°，矢状面平均成角为12.7°±7.2°。1例患者出现术后并发症。所有骨折均愈合。出现桥接骨痂影像学证据及随后取出植入物的平均时间为71天（范围：30 - 120天）。
本研究结果支持使用CESF治疗玩具犬桡骨远端和尺骨骨折，作为其他骨折固定方法的替代方案。然而，该技术需要进行一系列随访检查，以评估固定装置的稳定性、钢丝的完好性，并确定取出植入物的合适时间。
