Arthroscopy principles were discussed. Arthroscopy involves inserting an arthroscope through small incisions to examine the inside of a joint. It allows diagnosis and treatment of injuries with less invasive techniques compared to open surgery. Common procedures include repairing torn cartilage or ligaments. Proper instrumentation, irrigation, and triangulation techniques are important for optimal visualization and treatment. Potential complications are rare but include damage to structures or infection. Recovery time depends on the procedure but most activities can be resumed within a few weeks.