外傷後鎖骨遠位端骨溶解症の1例

抄録

We report a case of post-traumatic osteolysis of the distal end of the clavicle. The case was a 48-year-old man who sustained an injury to his shoulder in a bicycle accident six months before. He had felt inveterate pain and swelling in his left acromio-clavicular joint after the accident, though the shoulder radiograph taken soon after the accident showed no abnormality. After five months, osteolysis of the distal end of the left clavicle was found on radiograph. According to laboratory data, there were no findings of infection. Comparison of radiograph taken just after injury with that taken two and five months later revealed that the patient sustained fracture of the distal end of his left clavicle (Neer's classification type III) first, and later developed osteolysis of his left claviclar distal end occurred because he did not rest his shoulder. By conservative trearment, pain is decreasing and no progress of osteolysis has been seen in follow-up radiograph.