Dorsopalmar radiographs of the right (a) and left (b) paws, and both paws (c) in a tiger with ectrodactyly. Observe in the left paw (b) the separation of soft tissue between the second and third metacarpal bones, separation between second and third carpal bones, first metacarpal somewhat misshapen and fused to the proximal aspect of second metacarpal, and hypoplasia (shortened) of the second metacarpal bone with associated metacarpophalangeal luxation with the head of phalanx one malformed. Magnified image to compare the first and second digits from both the left and right paws (c).
Rahal et al. BMC Veterinary Research 2012 8:98 doi:10.1186/1746-6148-8-98