This document discusses shoulder arthroscopy and postoperative monitoring. It begins by outlining the range of motion and planes of movement in the shoulder joint, which make it prone to injuries. The history of shoulder arthroscopy is then reviewed, from the first cadaver procedure in 1931 to advances like arthroscopic rotator cuff repair in the 1980s. Diagnostic arthroscopy techniques are covered, including anesthesia, positioning, room setup, and basic tools. Therapeutic arthroscopy is then outlined for treating various shoulder issues like rotator cuff tears, instability, SLAP lesions, frozen shoulder, AC joint problems, and arthritis. Success rates for arthroscopic shoulder stabilization are reported to be over 90% in several studies.