Procedures  ›  Knee

Partial Knee Replacement

Compartment-sparing knee replacement for single-compartment arthritis, a more natural-feeling knee.

Compartment-sparingNatural feelSmaller incision
Overview

When arthritis affects only one of the three compartments of the knee, most commonly the medial (inner) compartment, a partial knee replacement can resurface only the damaged area, leaving your healthy cartilage, bone, and ligaments completely intact.

Because the anterior and posterior cruciate ligaments are preserved, a partial knee typically feels more like a natural knee than a total replacement. Recovery is faster, blood loss is lower, and return to activity is quicker, but patient selection is critical.

Technique
01

Selection

Weight-bearing X-rays, MRI, and clinical exam are used to confirm that arthritis is truly limited to one compartment, that ligaments are intact, and that alignment is correctable.

02

Robotic planning

A pre-operative CT scan builds a 3D model of your knee. The implant is sized and positioned to match your native anatomy before surgery begins.

03

Minimally invasive exposure

A 3–4 inch incision, much smaller than a total knee. The kneecap is gently retracted rather than everted, preserving the extensor mechanism.

04

Resurfacing the single compartment

Only the damaged compartment is resurfaced. The other two compartments, both cruciate ligaments, and the kneecap are untouched.

Recovery timeline
Day 0–1
Walk with minimal assistance; typically go home the same day.
Week 1
Off narcotics; using a cane for comfort.
Week 2–3
Cleared to drive; walking independently.
Week 4–6
Return to most daily activities, cycling, gentle hiking.
Month 3
Return to doubles tennis, golf, skiing for appropriate candidates.

Timelines are typical, individual recovery varies based on age, health status, pre-operative condition, and adherence to physical therapy. Dr. Debbi will give you a personalized recovery plan.

In patients' words
Two other surgeons told me I needed a total knee. Dr. Debbi reviewed my MRI and said a partial would work. Recovery was remarkably fast, home the same day, driving at two weeks, skiing by the next winter. The knee feels like mine.
Patient, age 54 ★★★★★ Google review
What I appreciated most was that Dr. Debbi didn't oversell. He walked me through when a partial holds up and when it doesn't. Six months out, I don't think about the knee. It bends like it always did.
Patient, age 62 ★★★★★ Google review
Who is a candidate
Common questions
A well-placed partial knee can be converted to a total knee replacement if needed. This is why precise implant positioning matters, it preserves options for the future.
For appropriate candidates, the partial preserves more of your natural anatomy and typically feels more like a normal knee. It's the right answer when arthritis is limited to one compartment.
Contemporary partial knees show survivorship approaching that of total knees at 15 years when appropriately selected and precisely placed, which is why robotic assistance and patient selection are both critical.
Roughly 20–30% of patients with knee arthritis are candidates. Dr. Debbi will review your X-rays, MRI, and exam findings to determine whether a partial or total knee is right for you.
Request a consultation

Ready to take the next step?

New patient appointments are typically available within 1–2 weeks. Telehealth consultations available for out-of-state patients.