Page 72 - Equine Clinical Medicine, Surgery and Reproduction, 2nd Edition

Musculoskeletal system: 1.2 The foal and developing animal 47

VetBooks.ir hindlimb joints. Depending on the breed, the tar- acute, to marked) and joint distension (Fig. 1.83) are
OCD is more commonly encountered in the
usually present. Radiography (Fig. 1.84) and ultra-
socrural joint (Warmbloods and Standardbreds)
(Fig. 1.82), the stifle joints (Warmbloods and sonography (Figs. 1.85, 1.86) are most commonly
used for imaging lesions. Treatment may be conser-
Thoroughbreds) (Fig. 1.83) and the MCP/MTP vative or surgical (arthroscopy) depending on the
joints (Thoroughbreds and Standardbreds) are the type of lesion and age of the horse (Fig. 1.87). The
most commonly affected. OCD in other breeds is prognosis depends on the location, type and severity
less common, but does occur. Bilateral lesions are of the lesion and the age of the horse. The clinical
common and radiography of the contralateral limb signs, treatment and prognosis of OCD in each joint
is always advisable. Multiple different joint lesions are discussed in the relevant chapters on conditions
are not common. Lameness (from chronic, to mild to of the forelimbs and hindlimbs.

1.82 1.83

Fig. 1.82 Dorsomedial/plantarolateral oblique Fig. 1.83 Six-month-old Thoroughbred foal with
radiograph of the hock of a young Warmblood marked bilateral stifle joint distension and hindlimb
horse presenting with tarsocrural joint distension lameness. Note the enlarged femoropatellar joint
and lameness localised to this joint. There is in the left hindlimb just below the fold of the flank
an OCD lesion of the distal intermediate ridge (arrow).
of the tibia (arrow), which is multifragmented.
(Photo courtesy Graham Munroe)