“…To the best of our knowledge, no specific palaeopathological article focuses on the sequelae of obstetric brachial plexus palsy, in which glenoid retroversion is a significant element. They are only discussed as a differential diagnosis of other pathological conditions of the scapulohumeral joint, as in Mays (2009) for cases of probable primary dysplasia. In contexts of thalassemia, infection or trauma, attention usually focuses on humeral lesions, while glenoid lesions are seen only as secondary osteoarthritis (Hershkovitz et al, 1991;Pálfi, 1997, p. 40;Molto, 2000;Kacki et al, 2013).…”