Congenital bilateral metacarpal deviation and medial patellar luxation in a young white-tailed deer (Odocoileus virginianus).

A 6-week-old white-tailed deer fawn (Odocoileus virginianus), found in Vermont, was presented with carpal contraction, 90 degrees medial deviation of the rear legs from the hock distally, and an abnormal coat color. Radiographically there was lateral deviation of both medial metacarpal bones and a Grade IV medial patellar luxation.