Page 136 - Equine Clinical Medicine, Surgery and Reproduction, 2nd Edition

Musculoskeletal system: 1.3 The foot 111

VetBooks.ir 1.191 1.192

1.193

Fig. 1.191 Dorsopalmar radiograph showing loss of
joint space and subsequent collateromotion (rotation
in the frontal/dorsal plane) of the distal phalanx in
relation to the middle phalanx.

Figs. 1.192, 1.193 (1.192) Lateromedial radiograph
demonstrating decreased width of the distal
interphalangeal joint and exostoses (osteophytes and
entheseophytes) on the dorsal surface of the middle
phalanx. (1.193) Dorsoproximal/palmarodistal oblique 1.194
radiograph of same horse demonstrating severely
decreased width of the distal interphalangeal joint due
to near complete loss of articular cartilage.

Fig. 1.194 Lateromedial radiograph of a horse with
chronic osteoarthritis of the distal interphalangeal
joint. The new bone formation on the dorsal
aspect of the middle phalanx consists of capsular
entheseophytes and marginal osteophytes.

rest, without need for additional treatment. ACS/ useful for the management of small, focal cartilage
IRAP is injected once every 10–14 days for 3–4 injec- injury identified on MR images without radiographic
tions while the horse is kept on stall rest with con- evidence of OA. For moderate to severe synovitis/
trolled hand walking only. ACS/IRAP may also be capsulitis or mild OA, intra-articular corticosteroids,