Inferior check ligament desmotomy indications: which contracture?

Inferior check ligament desmotomy indications: which contracture?

• A. Carpal osteoarthritis
• B. Suspensory desmitis
• C. Flexor carpi ulnaris contracture
• D. Deep digital flexor tendon contracture in young horse

Answer: (C)

The test is about when releasing the inferior check ligament helps a horse with a carpal problem. The inferior check ligament anchors the flexor carpi ulnaris tendon to the bones at the wrist area. If the FCU tendon is contracted or tethered, it pulls the carpus into a flexed position and limits extension. Cutting that ligament relieves that tether, allowing the FCU tendon to lengthen and the carpus to straighten, which addresses the abnormal flexion pattern. Therefore, this procedure is best indicated for a flexor carpi ulnaris contracture, which causes carpal flexion deformity. It wouldn’t address carpal osteoarthritis, suspensory ligament disease, or a deep digital flexor tendon contracture, since those conditions involve different structures and require other treatments.

The test is about when releasing the inferior check ligament helps a horse with a carpal problem. The inferior check ligament anchors the flexor carpi ulnaris tendon to the bones at the wrist area. If the FCU tendon is contracted or tethered, it pulls the carpus into a flexed position and limits extension. Cutting that ligament relieves that tether, allowing the FCU tendon to lengthen and the carpus to straighten, which addresses the abnormal flexion pattern.

Therefore, this procedure is best indicated for a flexor carpi ulnaris contracture, which causes carpal flexion deformity. It wouldn’t address carpal osteoarthritis, suspensory ligament disease, or a deep digital flexor tendon contracture, since those conditions involve different structures and require other treatments.