🦵 Patella Resurfacing in #TotalKneeReplacement - To Cap or Not to Cap?
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How is #PatellaResurfacing done?
As your surgeon prepares for this crucial step, they carefully assess the back of the #kneecap (patella).
1. Precise measurement - the patella's thickness to ensure enough bone remains after resurfacing
2. Careful preparation - Using specialized tools, your surgeon removes a thin layer of bone/cartilage from the patella's undersurface, creating a smooth/flat surface
3. Shaping - the prepared surface is shaped to match the curvature of the implant, ensuring proper tracking against the femoral (thigh bone) component
4. Trial fitting - temporary "trial" component can be used to check size, positioning, movement
5. Bone Cement application
6. Final implant placement - patellar implant or #patellarbutton (usually polyethylene) is pressed into place
7. Assessing function - knee is flexed/extended to ensure smooth patellar tracking + proper knee mechanics
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Goals of Patella Resurfacing
✅ Lower rates of anterior knee pain
✅ Reduced risk of revision surgery
✅ Fewer overall complications
A recent systematic review analyzing 33 randomized trials with over 5,500 TKAs found that patellar resurfacing was associated w/
📉 35% lower risk of anterior knee pain
📉 37% reduced risk of revision surgery
📉 46% fewer other complications
Many surgeons opt for selective resurfacing, choosing on a case-by-case basis guided by their training, experience, and interpretation of the latest evidence. As implant designs and surgical techniques continue to evolve, we may eventually reach a consensus.
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👇 SHARE your take? Should the patella be routinely resurfaced in TKA?
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