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. 2018 Sep 14;5(1):64-67.
doi: 10.1016/j.artd.2018.07.008. eCollection 2019 Mar.

Computed tomography confirmation of component rotation in nanosensor-balanced total knee arthroplasty

Jacob R Riis  1 , James P Reynolds  2 , Shane R Hess  3 , Peter J Haar  4 , John R Owen  5 , Jennifer S Wayne  6 , Gregory J Golladay  1
Affiliations

Computed tomography confirmation of component rotation in nanosensor-balanced total knee arthroplasty

Jacob R Riis et al. Arthroplast Today. .

Abstract

Balanced gaps and proper rotation are felt to be essential for optimum range of motion, stability, and patellar tracking in total knee arthroplasty. The purpose of this study is to assess, using computed tomography, the rotation of femoral and tibial components in fresh-frozen human cadaver knees that have been balanced using nanosensor trials while also observing how this rotation affects measured compartment loads and requirement for ligament balancing adjustment. We found that minor degrees of rotational malalignment of the femur and tibia were common using standard instrumentation and measured resection technique. Quantitative balance and rotational congruence are aided by nanosensor guidance, and femoral malrotation of up to 8° does not appear to affect compartment loads significantly as long as rotational congruity is present.

Keywords: Clinical outcomes research; Knee arthroplasty; Surgical navigation outcomes and robotics.

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References

    1. Kurtz S., Ong K., Lau E., Mowat F., Halpern M. Projections of primary and revision hip and knee arthroplasty in the United States from 2005 to 2030. J Bone Joint Surg Am. 2007;89:780. - PubMed
    1. Vessely M.B., Whaley A.L., Harmsen W.S., Schleck C.D., Berry D.J. The Chitranjan Ranawat Award: long-term survivorship and failure modes of 1000 cemented condylar total knee arthroplasties. Clin Orthop Relat Res. 2006;452:28. - PubMed
    1. Bourne R.B., Chesworth B.M., Davis A.M., Mahomed N.N., Charron K.D.J. Patient satisfaction after total knee arthroplasty: who is satisfied and who is not? Clin Orthop Relat Res. 2010;468:57. - PMC - PubMed
    1. Scott C.E.H., Howie C.R., MacDonald D., Biant L.C. Predicting dissatisfaction following total knee replacement: a prospective study of 1217 patients. J Bone Joint Surg Br. 2010;92:1253. - PubMed
    1. Baker P.N., van der Meulen J.H., Lewsey J., Gregg P.J. National Joint Registry for England and Wales. The role of pain and function in determining patient satisfaction after total knee replacement. Data from the National joint Registry for England and Wales. J Bone Joint Surg Br. 2007;89:893. - PubMed

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