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The ulnar styloid bursa is a pea-sized recess or bursa situated at the tip of the styloid process of the ulna and connected with the joint cavity of the wrist. This anatomical detail was first demonstrated by Kessler and Silberman (1961) in an arthrographic study using contrast medium. These authors pointed out that the frequently described “calcifications about the flexor carpi ulnaris tendon” were presumably often associated with this bursa. An illustrative case is now reported. This, incidentally, demonstrates the value of arthrography in the investigation of injured wrists. The arthrographic technique was previously described in this Journal (Thoms, 1962).

Among calcifications of various aetiology in the wrist Kohler and Zimmer (1956) have described a characteristic annular shadow between the ulna and the lunate bone. They interpreted the finding as vascular calcification, as the patient concerned had pronounced arteriosclerosis of the antebrachial vessels. I am submitting the following case with a similar radiological appearance, as in my opinion, the aetiology of the calcification in this case is different.