The cause of non-union and delayed union of fractures had been investigated befor several decades and the treatment of these fractures have been a thorough knowledge by orthopedists.
But up to date many of these patients have been consulted at the orthopedic clinic, Yamaguchi Labour Hospital. During the past ten years (1960-1969), eighty seven patients with non-union and delayed union of fractures of the long bones (the clavicle, the humerus, the antebrachial bones, the femur, the crural bones) were treated by the operative technique at our clinic. Here, owing to know the tendancy of the cause and the treatment of these fractures for the last ten years we followed up these patients.
