Bespoke knee replacements
Bespoke, or custom-made, knee replacements are designed to match the individual anatomy of a patient’s knee. Unlike standard implants, which come in a limited range of sizes, bespoke implants are tailored to fit the shape, size, and alignment of a patient’s joint. This personalised approach can improve comfort, function, and long-term outcomes after knee replacement surgery.
Why bespoke knee replacements are used
Knee replacement surgery is typically performed for osteoarthritis, rheumatoid arthritis, or other conditions causing severe pain, stiffness, and loss of function. In some patients, standard implants may not perfectly match the natural contours of the knee, which can affect movement, soft tissue balance, or long-term wear.
Custom implants are particularly considered for patients with unusual anatomy, previous fractures, or deformities, where standard sizes may not provide an optimal fit. Bespoke designs aim to replicate the natural shape of the knee more closely, preserving bone and supporting more natural joint mechanics.
How bespoke knee replacements are planned
The process begins with detailed imaging, usually a CT or MRI scan, to map the patient’s knee anatomy. These scans are used to create a 3D model of the joint, allowing surgeons to design an implant that precisely matches the patient’s bone structure. Surgical guides are also produced to ensure accurate placement during the operation.
This personalised planning can help the surgeon achieve better alignment and balance, reducing the risk of implant loosening, uneven wear, or persistent discomfort.
What to expect during surgery
Bespoke knee replacement surgery is performed under general or spinal anaesthesia. The operation involves removing damaged cartilage and bone and replacing it with the custom-made implant. The use of patient-specific guides helps ensure the implant sits in the correct position and orientation.
Recovery is similar to standard knee replacement, with hospital stays ranging from one to three days depending on the patient and procedure. Physiotherapy is initiated soon after surgery to restore movement, strength, and function.
Recovery and outcomes
Patients can generally expect gradual improvement in pain, mobility, and daily activities over several months. Early movement and adherence to physiotherapy programmes are essential to optimise outcomes.
Bespoke implants may offer benefits such as:
- a closer fit to the natural knee shape
- improved knee function and range of motion
- potentially reduced risk of implant-related complications
- better long-term implant survival in some patients
Who should consider bespoke knee replacement
Bespoke knee replacements are suitable for patients whose anatomy or previous knee conditions make standard implants less ideal. A consultation with a specialist knee surgeon can determine whether a custom implant is appropriate, taking into account age, activity level, bone quality, and overall health.
By providing a personalised solution, bespoke knee replacements aim to restore comfort, function, and confidence in the knee, allowing patients to return to daily activities and maintain an active lifestyle.