Calcific tendinitis of the neck.

When a calcific deposit in the shoulder, hip or elbow ruptures, it results in severe pain and tenderness. Few clinicians are aware that the longus colli muscle of the neck is also subject to acute tendinitis. When it occurs, the pain and spasm mimic infectious spondylitis or meningitis. Four patients are presented with acute tendinitis of the longus colli muscle and the classic radiographic findings of soft-tissue swelling and amorphous calcium deposits in the tendon.