Heterotopic ossification in the interosseous membrane of right forearm bones.

Abstract

Interosseous membrane is a broad thin collagenous sheet whose fibers slant distomedially between the radial and ulnar interosseous borders. Its distal part is attached to the posterior division of the radial border. Its fibers help in transmission of forces that act proximally from the hand to the radius, hence to the ulna and humerus. The posterior relations near the carpus are the anterior interosseous artery and posterior interosseous nerve. Heterotopic ossification resulting in radio-ulnar cross union occurs in 2% of all forearm injuries. During the routine undergraduate demonstration classes in the department of Anatomy at BLDEU’s Shri B. M. Patil Medical College, Bijapur, we found an unusual piece of