Joint replacement surgery becomes necessary when chronic joint pain and stiffness significantly affect daily activities and quality of life. It is usually recommended for patients with advanced arthritis, severe joint damage, or degeneration that does not improve with medications, physiotherapy, or lifestyle changes. If walking, climbing stairs, or even resting becomes painful, and conservative treatments no longer provide relief, surgery may be considered. Persistent swelling, limited mobility, and joint deformity are also warning signs. An orthopedic specialist evaluates symptoms, imaging reports, and overall health before recommending surgery to restore function, relieve pain, and improve long-term mobility and comfort.