Eight patients with complete acromio-clavicular dislocation treated between 1976 and 1983 were reviewed with a follow-up time of from 7 months to 8 years, the average being 3 years and 8 months. They were treated by arthrodesis of the acromio-clavicular joints with bone graff. The results were evaluated according to the Takagish's method with 100 percent excellent results. Two showed complete arthrodesis, whereas Six showed pseudo-arthrodesis.