Primary ArthroplastyDo Medial Pivot Kinematics Correlate With Patient-Reported Outcomes After Total Knee Arthroplasty?
Section snippets
Methods
After institutional review board approval was obtained, a retrospective review of a prospectively collected database of consecutive primary TKAs was undertaken. Procedures were performed between April 2013 and April 2014 by 2 board-certified arthroplasty surgeons at a single institution. Of the original 203 TKAs, 53 were excluded due to unavailability of the required size of the VERASENSE (OrthoSensor, Sunrise, FL) device (31), device malfunction (5), atypical hardware creating additional
Medial and Nonmedial Pivot Based on the Average COR From 0° to 90° Flexion
Pivot type could not be determined based on the COR from 0° to 90° for the 2 TKAs. For the remaining 139 knees, the average COR in the 90° flexion arc ranged from −324.03 to 605.81 mm with positive signifying the medial side. Medial pivot knees comprised 40% (55 of 139) of the total sample.
Pivot classification did not differ based on patient gender (75% female, χ2 = 0.739, P = .428), median BMI (32.9 kg/m2, W = 3723.5, P = .587), or median length of follow-up (19.6 months, W = 3947.5, P =
Discussion
TKA is a successful procedure which benefits thousands of patients annually. With the aging baby boomer population and an increase in younger patients indicated for surgery, the number of primary and revision TKAs are expected to drastically increase within the next 20 years [28]. Although TKA provides substantial benefits in terms of pain control and function to the majority of patients, our profession has been unable to replicate the nearly universal satisfaction rates seen with total hip
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Patient and Implant Performance of Satisfied and Dissatisfied Total Knee Arthroplasty Patients
2022, Journal of ArthroplastyComparison of the clinical and patient-reported outcomes between medial stabilized and posterior stabilized total knee arthroplasty: A systematic review and meta-analysis
2022, KneeCitation Excerpt :In the medial compartment, the medial condyle of the femur matches the medial depression of the polyethylene insert to provide greater surface contact between the insert and the prosthesis. In the lateral compartment, the larger lateral radius of the polyethylene insert allows the femur to slide and rotate forward and backward [14,15]. This MS-TKA design can reduce the wear of polyethylene and improve patella tracking [16,17].
One or more of the authors of this paper have disclosed potential or pertinent conflicts of interest, which may include receipt of payment, either direct or indirect, institutional support, or association with an entity in the biomedical field which may be perceived to have potential conflict of interest with this work. For full disclosure statements refer to http://dx.doi.org/10.1016/j.arth.2017.03.019.