A surgeon discussing Partial Knee Replacement Surgery options with a patient in Florida
Treatment/Treatment Details

Partial Knee Replacement Surgery

Partial knee replacement replaces only the damaged compartment of the knee, preserving healthy bone and ligaments for a more natural feel.

Experiencing Knee Pain?

Get expert relief — we'll call you to schedule

Free consultation • Same-day callbacks • No obligation

Preserving Healthy Knee Tissue

Partial Knee Replacement (unicompartmental knee arthroplasty or UKA) is a minimally invasive procedure that replaces only the damaged compartment of the knee while preserving the healthy bone, cartilage, and ligaments in the other compartments. This approach is ideal for patients with knee arthritis limited to one area of the joint.

Unlike total knee replacement, which replaces the entire joint, partial replacement preserves more of the natural knee structure, potentially providing a more natural feel and faster recovery. The procedure is typically performed through a smaller incision and involves less bone removal.

At Mountain Spine & Orthopedics, our knee specialists carefully evaluate each patient to determine if partial knee replacement is appropriate, considering factors like the extent of arthritis, knee alignment, and patient activity level.

Explore Knee Conditions & Treatments

View all knee conditions and treatment options →

Ideal Candidates for Partial Knee Replacement

  • Patients with knee arthritis limited to one compartment (medial, lateral, or patellofemoral)
  • Those with intact ligaments, particularly the ACL
  • Individuals with good knee alignment
  • Patients who want to preserve more natural knee structure
  • Those seeking a potentially faster recovery than total knee replacement
  • Active individuals who want to maintain higher activity levels
  • Patients without significant knee stiffness or deformity

What Conditions does Partial Knee Replacement Surgery Help Ease?

This procedure may help with:

OsteoarthritisACL InjuryTorn MeniscusKnee PainKnee ArthritisPCL Tear
Partial knee replacement preserving healthy compartments

The Partial Replacement Process

  1. A smaller incision is made to access the affected compartment
  2. Only the damaged cartilage and bone in that compartment are removed
  3. The healthy compartments are preserved
  4. A smaller implant is precisely fitted to the prepared bone
  5. The knee is tested to ensure proper alignment and range of motion
  6. The incision is closed and rehabilitation begins immediately

Benefits of Partial Knee Replacement Surgery

  • Preserves healthy bone, cartilage, and ligaments
  • Smaller incision and less tissue disruption
  • Potentially faster recovery than total knee replacement
  • More natural knee feel due to preserved structures
  • May allow return to higher-impact activities
  • Lower risk of complications compared to total replacement
  • Can be converted to total replacement later if needed

Recovery After Partial Knee Replacement

Recovery Timeline: 3-6 Months for Full Recovery

Recovery from partial knee replacement is typically faster than total knee replacement due to the less invasive nature of the procedure and preservation of healthy tissue.

Phase 1 (Weeks 1-2): Hospital discharge (often same-day or next-day), walking with assistive device, basic range of motion exercises, and wound care.

Phase 2 (Weeks 2-6): Progressive weight-bearing, strengthening exercises, and gradual return to daily activities. Most patients return to driving in 3-4 weeks.

Phase 3 (Months 2-3): Advanced strengthening, return to most daily activities, and initiation of low-impact exercise.

Phase 4 (Months 3-6): Full recovery with return to normal activities. Many patients can return to higher-impact activities than with total knee replacement due to preserved natural structures.

Related Knee Treatments

Explore other knee treatment options:

Total Knee Replacement SurgeryArthroscopic Knee SurgeryMeniscus Repair SurgeryACL Reconstruction SurgeryMeniscus Surgery (Meniscectomy)Knee Ligament Repair SurgeryPCL Reconstruction SurgeryKnee Cartilage Restoration

Frequently Asked Questions

What is partial knee replacement (unicompartmental)?

Partial knee replacement (unicompartmental arthroplasty) replaces only the damaged compartment (medial, lateral, or patellofemoral) rather than the entire knee. It's less invasive than total knee replacement, preserving healthy bone and ligaments.

Who is a candidate for partial knee replacement?

Ideal candidates have isolated arthritis in one compartment, intact ligaments, minimal deformity, and are typically over 60. The procedure works best for medial compartment arthritis in lower-demand patients. Younger, active patients may be better served by total replacement.

What are the benefits of partial knee replacement?

Benefits include faster recovery (4-6 weeks vs 3 months), more natural knee feel, smaller incision, less blood loss, shorter hospital stay, and better preservation of bone stock for future revision. Many patients report the knee feels more normal.

How long does a partial knee replacement last?

Survival rates are 80-90% at 10 years and 70-80% at 15 years. However, 10-15% of patients eventually require conversion to total knee replacement due to arthritis progression in other compartments. Younger, heavier patients have higher revision rates.

What are the disadvantages of partial knee replacement?

Disadvantages include higher revision rates than total replacement, potential for arthritis progression in untreated compartments, occasional clicking or clunking, and strict patient selection criteria. Not suitable for inflammatory arthritis or ligament insufficiency.

Schedule a Consultation Today

Localized knee arthritis? Our knee specialists offer partial knee replacement as a bone-preserving alternative. Schedule a consultation with Mountain Spine & Orthopedics today. Same-day and next-day appointments are often available.

Locations Offering Evaluation

Our board-certified specialists offer partial knee replacement surgery evaluation and treatment at locations across Florida, New Jersey, New York, and Pennsylvania. Schedule a consultation at a clinic near you.

View All LocationsFlorida LocationsNew Jersey LocationsNew York LocationsPennsylvania Locations