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Abstract

The present study was conducted to describe the normal sonographic anatomy of the carpal region in ten clinically healthy drought stallions. Longitudinal and transverse scans were taken on the different aspects of carpal region using 10 MHz linear probe. Five cadavers were subjected to a fine anatomical dissection, latex injection for joint capsule and cross anatomical sections were also done using bone saw at three levels (distal radius, middle carpal joint and proximal metacarpal). Extensor carpi radialis and common digital extensor tendons were observed at the distal radius, dorsal aspect of carpus and proximal metacarpus. Lateral collateral ligament, medial collateral ligament, superficial and deep digital flexor muscles and tendons were identified easily in both anatomical dissection and ultrasonographic examinations, while lateral digital extensor, extensor carpi obliqus tendon, dorsal and palmar intercarpal ligaments were seen during anatomical dissection but difficult to recognize by ultrasound. Anatomical and ultrasonographic investigations of the carpal region in drought horses provide reference for carpal evaluation and prognosis against different carpal affections.