Painful Snapping and Pseudo-winging Scapula due to a large Scapular Osteochondroma.

Background: Osteochondromas are common benign bone tumours. They are usually seen in metaphyses of long bones and are seldom found in flat bones like scapula. When present in scapula, they may cause abnormal scapulothoracic movements leading to pain, snapping and winging of scapula.

Methods: We describe the case of a middle-aged woman with painful snapping and pseudo-winging of scapula due to a large osteochondroma. The patient was treated with open resection with relief of symptoms.

Conclusions: Pseudo-winging and snapping scapula can be rarely caused by scapular osteochondromas even in cases presenting in fourth decade. These lesion respond well to surgical excision.