An Unusual Cause of Posterior Elbow Impingement: Detachment of a Hypertrophied Posterior Fat Pad

Figure 1

Magnetic resonance images of the elbow. (a) Sagittal T2-weighted image of a normal elbow. Preoperative sagittal T2-weighted images of the (b) right and (c) left side in the present case show a hypertrophied posterior fat pad interposed between the olecranon and olecranon fossa in both elbows. The posterior fat pad in the left elbow is located more inferiorly than that in the right elbow. Postoperative sagittal T2-weighted image of the (d) left elbow shows no posterior fat pad interposed between the olecranon and olecranon fossa.

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