Risk Factors for High Repair Tension During Rotator Cuff Repair.

Background: Excessively high repair tension, especially tension ≥10 N, can lead to unsuccessful rotator cuff repair.

Purpose/hypothesis: The purpose of this study was to identify the preoperative risk factors for high repair tension in rotator cuff repair. It was hypothesized was that older age, longer symptom duration, nontraumatic (ie, degenerative) tear onset, progressive fatty degeneration, and larger tear size would be among the risk factors.

Risk of Axillary Nerve Injury With Medial Support Screws in Intramedullary Nails: An Anatomical Study.

Background: In recent years, intramedullary nails with medial support screws for proximal humeral fractures have become available. Although these devices have a potential risk of iatrogenic axillary nerve injury, no studies have investigated the anatomical relationship between the medial support screws in the modern intramedullary nail and the axillary nerve. This study aimed to clarify the anatomical relationship between the medial support screws in the intramedullary nail and the axillary nerve.