This is a case report of calcific bursitis adjacent to the first metat
arsophalangeal (MP) joint in a 3-year-old boy. The patient had two att
acks of pain on the medial side of the first MP joint, resembling an a
cute gouty attack. Roentgenograms showed calcified opacity adjacent to
the medial side of the first MP joint. Surgical removal of the calcif
ied bursa was performed. X-ray analyses revealed that this calcified d
eposit was hydroxyapatite.