Avulsion of the triceps brachii is an uncommon injury. The usual mechanism of injury is fall onto an outstretched hand but can occur after direct contact injuries. Diagnosis is critical and dependent on history, physical examination, and radiological findings. Rupture of triceps brachii occurs most frequently at the tendo-osseous insertion and may be complete or partial, and could be associated with radial head fracture. Treatments include surgical repair of the complete rupture and immobilization of partial triceps rupture. We report 3 cases of triceps avulsion fractures treated by open surgical repair with literature reviews.