Abstract
The authors report a case of arthroscopic curettage for intraosseous ganglion on the humeral head. A 39-year-old man had pain on the right shoulder for three months. Plain radiographs showed a multilocular osteolytic lesion on the right humeral head. Plain computed tomography (CT) demonstrated a multilocular cystic lesion. Contrast medium-enhanced CT revealed a network-like enhancement of the rim of the cystic lesion. Plain magnetic resonance imaging (MRI) showed low signal intensity on T1-weighted images, and high signal intensity on T2-weighted images. Curettage of the lesion under arthroscopy by ankle scope was followed by an iliac bone graft. Histological findings were consistent with intraosseous ganglion. At 6 months after operation, the patient had little pain in the right shoulder, and retained almost full range of motion on the right shoulder. The patient has not shown signs of local recurrence to date.
