Clinical Results and Failure Mechanisms of a Nonmodular Constrained Knee Without Stem Extensions

HSS Journal (Musculoskeletal Journal of Hospital for Special Surgery), 05/17/2012

At mid–term follow–up, nonmodular constrained (NMC) prostheses without stem extensions have excellent clinical results and are a viable option for patients with ligamentous instability. The use of Palacos cement in this scenario was associated with a high rate of femoral component loosening, possibly due to the decreased intrusion depth of Palacos when compared to Simplex cement.

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