Knee replacement surgery leaves a vertical scar down the front of your knee. The scar is typically 15-25cm (6-10 inches) long, though the exact size depends on the surgical approach used and your body type. Initially, your scar will appear red or pink, possibly raised and quite prominent. Over 12-18 months, it gradually fades to a paler line that blends more with your skin tone. Minimally invasive surgical techniques may result in shorter scars, though this isn't suitable for everyone. While some patients feel self-conscious initially, most come to accept their scar readily as a small price for improved mobility and reduced pain. Learn more about the full knee replacement procedure.

It's very common to experience unusual sensations around your knee replacement scar, and most are completely normal. Numbness is extremely common and may be permanent for some patients - small sensory nerves are unavoidably cut during surgery, often affecting the area beside or below the scar. Tingling or pins and needles sensations indicate nerves recovering. Itching is typically a positive sign of healing. Tightness is normal as the scar tissue matures. Sensitivity to touch or cold weather is also common. These sensations typically reduce significantly over time, though some numbness may persist. For more information about nerve sensations after surgery. These are part of normal recovery, not signs of a problem.

Proper scar care can help optimise your healing and final appearance. In the early days, keep your wound dry until your surgical team advises otherwise and follow their dressing instructions carefully. Once the wound has fully healed (usually after 2-3 weeks), you can begin gently massaging the scar with a plain moisturiser or vitamin E oil. Silicone-based scar products (gels or sheets) may help improve appearance, though evidence is mixed. Sun protection is important - scars burn easily and can darken permanently. Apply SPF 30+ or keep covered for the first year when exposed to sunlight. Stay well hydrated and eat a balanced diet to support healing. Avoid picking at any scabs. The first few weeks of recovery are the most important for wound healing.

While most scars heal without problems, contact your surgical team if you notice: wound edges opening or not closing properly, increasing pain around the scar area, discharge from the wound (especially if discoloured or smelly), spreading redness beyond the immediate scar area, fever or generally feeling unwell, or excessive swelling. These could indicate infection, which needs prompt treatment. Don't hesitate to contact your surgical team with any concerns - it's always better to check. Most wound complications are easily treated when caught early.

Self-Pay Health helps you find experienced knee replacement surgeons who use careful surgical techniques that support better scarring outcomes. Good surgical technique and thorough post-operative care both contribute to optimal wound healing. Private patients often benefit from enhanced follow-up appointments where wound healing can be monitored closely. Your scar tells the story of your journey to better mobility - and for most patients, it's a small price to pay for a life with less pain.