Fig. 5. Desmitis of the supporting ligament of the navicular bone. Sagittal proton density image (A) showing enlargement of the CSL (red arrow) and an adhesion from the DSIL to the DDFT (green arrow) and STIR sagittal image (B) showing bone edema at the insertion of the DSIL (red arrows).
Fig. 6. Collateral ligament desmitis. Coronal proton density image (A) showing enlargement of the collateral ligament of the distal interphalangeal joint (red arrows) and dorsal gradient echo (B) showing cysts at the origin and insertion of the collateral ligament (red arrows).
(Fig. 6). Lesions of the collateral ligament are dis- tinguished by enlargement and increased signal in- tensity of the ligament. A portion (proximal aspect) of the ligament can be evaluated ultrasono- graphically; however, a majority of the ligament is confined within the hoof capsule making diagnosis of more distal abnormalities challenging. Cystic le- sion within the third phalanx at the insertion of the
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collateral ligament (collateral fossae) can occur and are characterized by increased signal intensity on all sequences.
Distal Straight and Oblique Sesamoidean Ligament Desmitis
Injuries to the straight and oblique sesamoidean ligaments are often overlooked following improve-
