The represented analysis shows the mechanism of formation of traumatic shoulder dislocation and potential intra-articular anatomic-morphological damages of humeral head according to the Hill—Sachs type in order to objectify the criteria of determination the severity of harm caused to human health. The potential Hill — Sachs classifications of shoulder dislocation are considered depending on size of humeral head defect. During the period of 2015 to 2020, 250 «conclusions» of forensic investigations of patients with the injuries of the shoulder joint were analyzed, performed by an expert traumatologist. It was identified, that in 8 patients with shoulder joint dislocation among 32 cases of shoulder injury, experts interpret this injury as a severe harm caused to human health without sufficient justification, using the conclusions of radiology specialists who gave a very brief description of X-rays indicating the diagnosis «fracture of humeral head according to the Hill-Sachs type». The severe harm caused to human health was detected correctly only in 2 patients with impression fracture of humeral head.