Introduction: In brachial plexus injuries after complete neurological treatment (neurolysis, grafting, nerve transfers) and adequate physiotherapy, secondary surgery may still be required to improve shoulder stability and function The external rotation of the shoulder is essential for daily functions,[for full text, please go to the a.m. URL], 14th Triennial Congress of the International Federation of Societies for Surgery of the Hand (IFSSH), 11th Triennial Congress of the International Federation of Societies for Hand Therapy (IFSHT), 11th Triennial Congress of the International Federation of Societies for Hand Therapy (IFSHT)