Page 324 - Equine Clinical Medicine, Surgery and Reproduction, 2nd Edition

Musculoskeletal system: 1.8 Soft-tissue injuries 299

VetBooks.ir 1.566 1.567

Fig. 1.566 Subacute lesion 4 days after injury in
a French trotter racehorse (zone IIA). The early 1.568
haematoma has organised with anechogenic fluid-
filled cavities separated by echogenic material (fibrin).

Figs. 1.567, 1.568 (1.567) Transverse ultrasound
scan of the SDFT 5 months after injury showing
increased echogenicity with a finely granular pattern.
This is created by fibrous scar tissue in which
the collagen fibres form thick enough bundles to
produce echoes but with poor organisation. (1.568)
Longitudinal image in the same horse. Poor linear
arrangement of fibres produces a granular rather than
linear pattern on longitudinal scans.

1.569

Fig. 1.569 Severe SDFT sprain with marked
enlargement of the tendon on this transverse image
and diffuse, heterogeneous loss of echogenicity.