(Fig 5-D.01) Surgical Options for Knee Arthroplasty

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MSK MRI Jee Eun Lee

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📌 Surgical Options for Knee Arthroplasty

1. PCL-Retaining TKA

• In PCL-retaining TKAs, the tibial and femoral metal components preserve the native PCL, providing stability. 
• Suitable for patients with adequate bone stock, intact soft tissues, and an intact PCL.

 

2. Posterior-Stabilized TKA

• Posterior-stabilized TKAs replace the function of the PCL, preventing anterior translation of the femur on the tibia during flexion. 
• These provide stability by limiting posterior motion in flexion. 
• They offer increased range of motion without significant differences in complication rates compared to PCL-retaining TKAs.

 

3. Varus-Valgus Constrained TKA

• Varus-valgus constrained implants, with a tall tibial post and deep femoral box, provide stability in the coronal plane. 
• They are used for severe valgus deformities, collateral ligament deficiency, bone defects, and residual instability.

 

4. Unicompartmental Arthroplasty

• This procedure resurfaces the articular surfaces of a single compartment, commonly the medial compartment, making it ideal for patients with unicompartmental OA.

 

References

• Semin Musculoskelet Radiol 2017;21:147–164
• Semin Musculoskelet Radiol 2019;23–e35
• Skeletal Radiol. 2019 Jul;48(7):1145-1148
• AJR 2013; 201:W828–W842

 

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#KneeArthroplasty, #PCLRetainingTKA, #PosteriorStabilizedTKA, #VarusValgusConstrainedTKA, #UnicompartmentalArthroplasty, #OrthopedicSurgery, #TotalKneeReplacement, #KneeSurgery, #JointReplacement, #Orthopedics