During routine cadaveric dissection of the upper extremity an unusual muscle was discovered arising from the tendon of the flexor carpi ulnaris and inserting into the muscle belly of the flexor digiti minimi. The muscle's course was superficial to the ulnar nerve and artery in Guyon's canal. We review the literature regarding such muscle variations and discuss the potential for compression of t...

The anterior interosseous nerve syndrome involves paralysis of the flexor pollicis longus, flexor digitorum profundus of the index and long fingers, and the pronator quadratus. We have encountered 33 cases of an incomplete syndrome in which only the flexor pollicis longus or the flexor digitorum profundus of the index finger is either paretic or paralyzed. This entity must be distinguished from...

The horseshoe abscess is a rare variant of flexor tendon sheath infections. It involves the tendon sheaths of the first and fifth digits, which communicate through the deep potential space of the wrist. Neural compression is possible, leading to an acute carpal tunnel syndrome. The approach to such patients should include empirical antibiotic coverage and urgent consultation with a hand surgeon...

A severe right hind limb paralysis due to injury to the peroneal (fibular) nerve was characterized by knuckling of the paw, over extension of the hock, dragging of the limb and excoriations on the dorsum of the digits. Management of the case therapeutically and conservatively over a period of three weeks was not rewarding. The case was eventually and successfully managed by the relocation of th...

During routine dissection for the undergraduate medical students, we encountered an unusual, additional muscle in the anterior compartment of the forearm. This muscle took origin from the anterior surface of the radius in common with the flexor digitorum superficialis muscle. It had a tendon of origin and a tendon of insertion. Its fleshy radial belly and the tendon of insertion, crossed superf...

A study has been made of the ultrastructural organization of the collagen fibrils and elastic fibres in tendons and ligaments from horses of ages ranging from 2 months premature to 19 years. Diameter distributions of the collagen fibrils in the common digital extensor tendon, the super­ ficial flexor tendon and the suspensory ligament are unimodal in the foetal tissue and a t birth, and a t the...

Ultrasound of the tarsus, like other joints in the horse, provides valuable information to document and characterize soft tissue and osseous injury. The collateral ligaments, superficial digital flexor tendon, long digital extensor tendon, gastrocnemius tendon, and peroneus tertius are most commonly affected, but injuries to all tendons and ligaments can be seen. The frequency of wounds makes t...

Background: The flexor digitorum brevis tendon to the fifth digit is frequently absent, and this absence typically an incidental discovery during dissection or surgical studies. This study aimed assess frequency of a missing in Hispanic population for first time, association between tendon, variables such as sex ethnicity, functional implications absent tendon. Methods: Our sample consists 30 c...