What should you know about cementless partial knee replacement?

It may suit selected people whose arthritis is confined to one part of the knee, with suitable ligaments, alignment, movement and bone quality. A surgeon confirms this through examination and imaging.

The surgeon removes damaged joint surfaces from the affected compartment while preserving the healthier compartments and more natural knee structures. The metal components have a textured or porous surface designed to support bone attachment. A durable plastic bearing sits between the components so the joint can glide.

Unlike a cemented implant, the initial fit provides stability while biological fixation develops. Cementless fixation is not automatically preferable for every patient; implant design, bone strength, knee anatomy, activity needs and the surgeon's assessment all affect the choice.

Before surgery, give the clinical team a complete medication list and discuss smoking, diabetes, skin problems, dental infection, previous clots and help available at home. Follow individual instructions about medicines, fasting and washing.

After the operation, follow the prescribed weight-bearing plan, use walking aids as taught and complete exercises that restore knee movement and thigh strength. Keep the wound clean and dry, take pain and clot-prevention medicines exactly as directed, and attend follow-up visits. Do not drive until you can control the vehicle safely and your clinician has cleared you.

Contact the surgical team promptly for increasing wound redness, warmth, drainage, fever, worsening pain after initial improvement, or new calf pain and swelling. Sudden chest pain, severe breathlessness, fainting, a cold or pale foot, or new inability to move the foot needs emergency assessment.

A fall, a new knee deformity, or an abrupt loss of the ability to bear weight also warrants urgent review. These symptoms can reflect infection, a blood clot, circulation or nerve trouble, fracture, or an implant-related problem and should not wait for a routine appointment.

Ask which knee compartment is damaged, whether the other compartments and key ligaments are healthy, and why cementless fixation is appropriate for your bone. Clarify the expected weight-bearing plan, pain-control approach, rehabilitation milestones, work and driving restrictions, implant materials, and circumstances that might require conversion to a total knee replacement.