Arthroscopic Treatment of Avascular Necrosis of the Femoral Head.

Avascular necrosis of the femoral head arises due to inadequate blood supply to the femoral head, leading to cell death, fracture, and eventually collapse. The disease often begins as asymptomatic but can present with pain, stiffness, and limited range of motion in later phases. These symptoms cause disability, predominantly in young to middle-aged individuals.