Patient Education: Minimally Invasive Total Knee Replacement

Minimally Invasive Surgery (MIS)

• A smaller incision
• Less collateral damage to muscles, tendons, and ligaments
• Minimal bone removal
• Implant designs that maximize muscle leverage such as the Stryker Scorpio® knee

Potential benefits of MIS (versus traditional surgery)

• Shorter hospital stay
• Faster recovery
• Reduced pain
• Smaller scar

MIS Options

Uni-Knee Replacement:

• Surfaces are replaced only on one side of knee
• Suitable if only one half of the knee is diseased

Patello-Femoral Replacement:

• Surfaces are replaced only on the patella and patella contact region of the femur
• Suitable if arthritis is limited to patella

MIS Total Knee Joint Replacement:

• Surfaces are replaced on both sides of the knee and patella
• Suitable for more severe knee disease

Sources:
Mahoney OM. The Effect of Total Knee Arthroplasty Design on Extensor Mechanism Function. The Journal of Arthroplasty. Vol. 17 (4) 416-21. 2002.
Tria AJ. Minimal Incision Total Knee Arthroplasty. Clinical Orthopaedics & Related Research, 2003; Vol. 416.

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