Page 658 - Atlas of Small Animal CT and MRI

648 Atlas of Small Animal CT and MRI

Figure 6.2.11 Medial Compartment Disorder (Canine) MR

(a) IL, MED (b) IL, MED (c) T1+C, ARTH, DP

(d) T1+C, DP (e) T1+C, SPGR, DP
8y MC Australian Shepherd with a history of left‐sided bicipital tenosynovitis that was surgically treated previously with tendon
transection. Lameness progressed following surgery. Images a and b show the medial glenohumeral ligament (a: MGL) and the overlying
subscapularis muscle (b: Su) and subscapularis tendon of insertion (b: SuT) on the medial aspect of the humeral head. Image c is a dorsal
plane arthrographic image of a normal shoulder in extension showing the lateral glenohumeral ligament (c: LGL), medial glenohumeral
ligament (c: MGL), subscapularis muscle (c: Su), and subscapularis tendon of insertion (c: SuT). Image e is a magnification of d. Dorsal
plane arthrographic images of the affected limb of the patient show marked muscle wasting. Although the medial glenohumeral liga-
ment is not well delineated from the overlying subscapularis tendon of insertion, the combined width is markedly thicker than normal
(d,e: arrowheads), indicative of medial compartment instability. See Legend for Figures 6.2.7–6.2.11. Agnello et al 2008. Reproduced
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with permission from Wiley.

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