St-Jean G, Debowes R M
Can Vet J. 1992 Apr;33(4):257-62.
We reviewed the medical records of three calves with radial-ulnar fractures which were reduced and stabilized by transfixation pinning and casting. Multiple Steinmann pins were placed transversely through proximal and distal fracture fragments and the pin ends were incorporated in fiberglass cast material after fracture reduction. Cast material was placed from proximal to distal radius and served as an external frame to maintain pin position and fracture reduction.At the time of injury, the calves ranged in age from one day to two months and weighed from 37-102 kg. Two fractures were comminuted and one was transverse. All fractures were closed. After surgery, all calves could walk within 24 hours. Radiographic and clinical evidence of fracture healing was present five to seven weeks (mean 6) after surgery. At that time, the pins and cast material were removed. Return to normal function was rapid and judged to be excellent at follow-up evaluation five to nine months later.Advantages of transfixation pinning and casting in management of radial-ulnar fractures include flexibility in pin positioning, adequate maintenance of reduction, early return to weight-bearing status, preservation of joint mobility, and ease of ambulation. The inability to adjust fixation and alignment after cast application is a disadvantage of this technique compared with other external fixators. We concluded that transfixation pinning is a useful means of stabilizing radial-ulnar fractures in pediatric bovine patients.
我们回顾了三头患有桡尺骨骨折的小牛的病历，这些骨折通过穿针固定和石膏固定进行了复位和稳定处理。多根斯氏针横向穿过近端和远端骨折碎片，骨折复位后，针的末端被纳入玻璃纤维石膏材料中。石膏材料从桡骨近端放置到远端，作为一个外部框架来维持针的位置和骨折复位。受伤时，小牛的年龄在1天至2个月之间，体重在37 - 102千克之间。两处骨折为粉碎性骨折，一处为横断骨折。所有骨折均为闭合性骨折。术后，所有小牛在24小时内即可行走。术后五至七周（平均6周）出现骨折愈合的影像学和临床证据。此时，取出针和石膏材料。恢复正常功能的速度很快，在五至九个月后的随访评估中被判定为极佳。穿针固定和石膏固定治疗桡尺骨骨折的优点包括针定位的灵活性、复位的充分维持、早期恢复负重状态、保留关节活动度以及易于行走。与其他外固定器相比，石膏应用后无法调整固定和对线是该技术的一个缺点。我们得出结论，穿针固定是稳定小儿牛桡尺骨骨折的一种有用方法。
