This document provides an overview of common shoulder problems, including impingement and rotator cuff tears, massive irreparable rotator cuff tears, shoulder instability, biceps labrum complex lesions, proximal humerus fractures, and shoulder osteoarthritis. It discusses the clinical presentation, diagnostic tools, and management options for these conditions. Key points include that rotator cuff tears tend to progress in size if left untreated, massive cuff tears can be addressed with novel techniques like balloon arthroplasty, and the evidence on surgical versus non-surgical treatment of proximal humerus fractures remains unclear.