Abstract
The etiology of congenital pseudoarthrosis of the clavicle remains obscure. The authors treated a 4 years-old boy with this rare disease. Clinical history and radiographs confirmed the diagnosis. Surgical treatment of resection of the pseudarthrosis without bone graft and internal fixation with a small AO plate led to successful bone union.
Histological analysis of pseudoarthrosis showed that were cartilaginous caps on the proximal and distal bony ends. The appearance of the cartilaginous caps were developing. These observation support the hypothesis that the pseudarthrosis is caused by failure of 2 ossification center of fuse as was previously proposed by others.
