Uni knee replacement (partial knee) replaces only the damaged compartment, preserving healthy bone and ligaments. It offers faster recovery and a more natural feel — but only suits patients with single-compartment arthritis.
What is uni-compartmental knee replacement?
The knee has three compartments — medial, lateral, and patellofemoral. A uni-knee resurfaces just one, typically the medial side which wears out first.
Both cruciate ligaments are preserved, giving the knee a more natural kinematic feel after surgery.
Who is a candidate?
Ideal candidates have arthritis confined to one compartment, intact ligaments, and minimal deformity. Robotic guidance has dramatically expanded who qualifies.
Recovery and longevity
Patients typically walk within hours and go home in 1–2 days. Most resume normal activity within 3–4 weeks.
With robotic precision, modern uni-knee implants last 15–20+ years and can be revised to a total knee if needed later.