Abstract
A 47-year-old woman was referred to our radiology department for right shoulder arthroscanner evaluation because of anterior shoulder pain. She had previously been practising professional dance. Computed Tomography (CT) (Fig. A) did not show any shoulder pathology but meticulous analysis revealed the presence of a joint between the clavicle and the coracoid process with degenerative changes. In retrospect, the coracoclavicular joint was visible on plain radiographs (Fig. B). A coracoclavicular joint arthrogram (Fig. C) confirmed a diarthrosis with articular cartilage covering both articulation surfaces surrounding by an articular capsule. The patient was treated with local intraarticular injection of steroids under image guidance.
Highlights
(Fig. A) did not show any shoulder pathology but meticulous analysis revealed the presence of a joint between the clavicle and the coracoid process with degenerative changes
A coracoclavicular joint arthrogram (Fig. C) confirmed a diarthrosis with articular cartilage covering both articulation surfaces surrounding by an articular capsule
Plain radiographs are typical of a joint and reveal a bony outgrowth from the undersurface of the clavicle forming an articular surface with a tubercle on the dorsomedial surface of the coracoid process
Summary
(Fig. A) did not show any shoulder pathology but meticulous analysis revealed the presence of a joint between the clavicle and the coracoid process with degenerative changes. A coracoclavicular joint arthrogram (Fig. C) confirmed a diarthrosis with articular cartilage covering both articulation surfaces surrounding by an articular capsule.
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