A 3‐year‐old Standardbred gelding (Case 1) and a 2‐year‐old Thoroughbred gelding (Case 2) were referred for surgical evaluation of a left radial carpal bone (RCB) fracture, sustained during training. Clinical findings at the time of initial examination included a palpable effusion within the left middle carpal joint in both horses and marked signs of pain and reduced range of motion on flexion of the affected carpus. In both horses, the RCB fracture was evident on the following radiographic views of the carpus: dorsolateral–palmaromedial oblique (30° off lateromedial) and flexed lateromedial. An additional loose wedge‐shaped osteochondral fragment at the proximal articular surface of the RCB could be seen in Case 2. Both horses underwent surgical reduction and repair of the fracture between 1 and 2 days following the initial injury, which consisted of arthroscopic removal of any intra‐articular osteochondral fragments, and arthroscopic assisted‐interfragmentary compression via a standard dorsomedial and dorsolateral approach to the antebrachiocarpal joint (ACJ) and middle carpal joints (MCJ). The two horses returned to function as racehorses, 6 months (Case 1) and 16 months (Case 2) after surgery. The RCB is a relatively uncommon site for large carpal fractures in horses. The clinical presentation and findings from this report were similar to that of third carpal bone (C3) slab fractures, confirming that surgical repair is indicated in selected cases of RCB fractures.

中文翻译：

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两匹赛马radial骨骨折的手术修复

3岁的Standardbred ding胶（案例1）和2岁的Thoroughbred ding胶（案例2）被推荐用于在训练过程中持续进行的car骨左腕骨（RCB）骨折的手术评估。初次检查时的临床发现包括两匹马的左中腕腕关节明显积液，并伴有明显的疼痛迹象，受影响的腕关节屈曲时活动范围减少。在两匹马中，RCB骨折在以下腕部X线片上很明显：背外侧-pal斜（离侧面30°）和弯曲的侧面。在案例2中，可以在RCB的近端关节表面看到一块松散的楔形骨软骨碎片。两匹马在最初受伤后的1到2天内进行了手术复位并修复了骨折，包括通过关节镜下去除任何关节内软骨软骨碎片，以及通过标准的背腕和背外侧入路到腕腕关节（ACJ）和腕中关节（MCJ）进行关节镜辅助碎片间压迫。手术后6个月（案例1）和16个月（案例2），这两匹马恢复了赛马的功能。RCB是马中较大的腕骨骨折的相对少见的部位。该报告的临床表现和发现与第三腕骨（C3）平板骨折相似，证实在某些RCB骨折病例中需要进行外科手术修复。并通过标准的背突和背外侧入路向腕腕关节（ACJ）和中腕关节（MCJ）进行关节镜辅助性节肢间按压。手术后6个月（案例1）和16个月（案例2），这两匹马恢复了赛马的功能。RCB是马中较大的腕骨骨折的相对少见的部位。该报告的临床表现和发现与第三腕骨（C3）平板骨折相似，证实在某些RCB骨折病例中需要进行外科手术修复。并通过标准的背突和背外侧入路向腕腕关节（ACJ）和中腕关节（MCJ）进行关节镜辅助性节肢间按压。手术后6个月（案例1）和16个月（案例2），这两匹马恢复了赛马的功能。RCB是马中较大的腕骨骨折的相对少见的部位。该报告的临床表现和发现与第三腕骨（C3）平板骨折相似，证实在某些RCB骨折病例中需要进行外科手术修复。