2001 年 25 巻 3 号 p. 557-561
39 patients with a clavicular nonunion had conservative treatment before surgery was indicated. There were 23 nonunions in the middle third,14 in the distal third, and 2 in the proximal third.21 patients became less symptomatic and did not necessarily require surgery. The reminders, which were 14 in the middle third,4 in the distal third, did not satisfy their condition and underwent an operation. Possible factors, which finally need surgery, were analyzed. Nonunions with surgery were relatively young and had a short period between trauma and start of the conservative treatment. In the middle third, a male athlete needed surgery, and in the distal third, a non-operative case at the time of trauma or atrophic nonunion needed surgery.