My knee replacement looks fine on X-ray, but I still have pain. Could it be my hip or back?

First, what is normal

Recovery after a knee replacement is gradual. Aching, warmth and some swelling are common for several months, and improvement often continues for up to a year. Pain that is steadily easing is usually part of normal healing. Pain that is not improving, is getting worse, or returned after a good period deserves review.

Sources outside the knee

• Hip arthritis that was present before but was overshadowed by the knee
• A trapped nerve in the lower back sending pain to the front of the thigh and knee
• Irritation of a small skin nerve near the scar, causing burning or numbness
• Circulation problems or, early after surgery, a blood clot in the calf

Problems in the knee to rule out

• Infection, which can be low grade and needs blood tests and sometimes aspiration
• Stiffness from scar tissue
• Loosening or instability of the implant, which may not show on a single X-ray
• Kneecap tracking problems or tendon irritation

Redness, increasing swelling, wound drainage or fever after any knee surgery needs prompt medical attention.

A structured review in Doha

At Aman Hospital Dr. Gelber reviews your operation notes and X-rays, examines the hip, spine and knee, and arranges blood tests or further imaging where needed. If the knee is the source, the options are explained. If the hip or back is driving the pain, he will say so clearly and refer you, which can spare you further knee surgery that would not help.