Bone pathology of the distal right front limb in rhinoceros 3.

<p>Dorsal aspect of the distal autopodium (A) and close-up computed tomographic images of distal phalanges (Ph) from lateral (D IV) digit (B), middle (D III) digit (C) and medial (D II) digit (D) showed multiple osteopathologies. Distal phalanges (Ph III) of each digit present fractures (large arrows) characterized as follows: medial digit (D II) – complete, with dorso-distal triangular fractured fragment of bone; central digit (D III) - severe, comminuted fracture of the lateral palmar process, with two main fragments (20×30×10 mm and 10×20×10 mm) accompanied by callus formation and also severe fracture of the medial palmar process with one fragment; lateral digit (D IV) - chip fracture of the distal part of lateral palmar process. Other pathologic changes observed on D IV include: small mineralized body (2 mm diameter, A, B-rectangle) between the first phalanx (Ph I) and the second phalanx (Ph II); two medium sized osseous bodies (10 mm length, A, B-circle) situated dorso-proximally to Ph II; dorso-medial amorphous periosteal reaction on the proximal half of Ph II; moderate bone remodelling of Ph I and Ph II (small arrows). The small sesamoid (s) of D III is intact.