PMC3599958_01
(a) Lateral and (b) anteroposterior radiographs of the right elbow demonstrating no visible abnormality.
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F1
Initial plain radiographs of the elbow demonstrated no abnormalities (Figure 1).
(a) Lateral and (b) anteroposterior radiographs of the right elbow demonstrating a solitary well defined calcified mass at the posteriomedial aspect.
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F2
Plain radiographs and MR scan (Figures 2 and 3) corroborated the diagnosis of synovial chondromatosis; it also showed that the ulnar nerve was markedly displaced and compressed by the lesion at the level of olecranon fossa, however the cubital tunnel was normal.
(a&b) MR coronal and (c) axial images showed well defined mass above the medial epicondyle with ulnar nerve compression (arrowed).
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F3
Plain radiographs and MR scan (Figures 2 and 3) corroborated the diagnosis of synovial chondromatosis; it also showed that the ulnar nerve was markedly displaced and compressed by the lesion at the level of olecranon fossa, however the cubital tunnel was normal.
The lesion in situ at operation with the ulnar nerve visible was overlying the mass.
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F4
Through a posteromedial approach centered over the mass, the ulnar nerve was identified and protected (Figure 4).
Shows the mass in situ.
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F5
The joint capsule was opened and the mass removed (Figures 5 and 6).
The mass after excision.
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F6
The joint capsule was opened and the mass removed (Figures 5 and 6).