Page 343 - Equine Clinical Medicine, Surgery and Reproduction, 2nd Edition

318 CHAPTER 1

VetBooks.ir • Hyperechogenic areas in chronic cases, • Irregularity of the palmar (plantar) surface
of the third metacarpal (metatarsal) bone
particularly in the hindlimbs (Figs. 1.612–
1.614); occasionally these induce an acoustic
shadow due to mineralisation. (Fig. 1.615) due to entheseophyte production.

1.612 1.613

Figs. 1.612, 1.613 (1.612) Transverse (1.612) and longitudinal (1.613) scans of the proximal metatarsus. The SL is
diffusely enlarged, hypoechogenic with complete loss of its normal architecture. Focal hyperechogenic foci are visible
(arrows); these are not casting shadows and probably represent fibrous tissue or partially mineralised material.

1.614 1.615

Fig. 1.614 Longitudinal scan of the proximal Fig. 1.615 Chronic, proximal SL desmopathy in the
metatarsus in a horse with chronic proximal forelimb. Entheseophytes are represented by irregular,
desmopathy. Mineralised foci induce discrete hyperchogenic interfaces protruding from the third
hyperechogenic interfaces (yellow arrows), casting metacarpal surface (Mc3) into the SL origin (arrows).
acoustic shadows (red arrows). Double arrow = SL.