Partial Knee Replacement
Partial knee replacement involves replacing a single section of the knee, usually the medial (inner) compartment, for patients with arthritis limited to that area. It's a less invasive option than total knee replacement, providing a quicker recovery and more natural joint movement.
Partial knee replacement is a procedure designed to replace only one section of the knee, usually the medial (inner) compartment, for patients with arthritis confined to a single area. This minimally invasive approach is ideal for those who do not require a full knee replacement.
The Procedure
Including the anaesthetic and recovery time, the operation typically takes 1.5 to 2 hours. Most patients receive a spinal anaesthetic, delivered via a needle in the lower back, along with sedation to ensure they are not aware of the procedure. In some cases, a general anaesthetic is used.
An incision is made along the front of the knee—the size of which depends on the area being replaced. The arthritic bone is removed, and metal and plastic components are used to replace the affected surfaces. Local anaesthetic is applied around the knee to reduce post-operative pain. The incision is then closed with absorbable sutures and sealed with skin glue. A dressing is applied to cover the wound, and a bandage is used to manage any swelling and bruising.
Recovery
Most patients find they are relatively comfortable upon returning to the ward and are encouraged to start using their knee immediately. It's safe to walk on the knee, and physiotherapists will guide you on how to do so safely. Some patients may benefit from using a hydrotherapy pool after surgery.
The usual inpatient stay is just one night, and the bandage is generally removed before discharge. Follow-up appointments are scheduled at 2 weeks (to check wound healing), 6 weeks (to assess mobility), and 3 months (to evaluate progress). Swelling and bruising is a common part of recovery and may limit movement in the early stages, but it typically decreases over time, allowing for improved function and reduced pain.