Clinical Study Finds Bilateral Knee Patients Prefer Conformis’ Fully Personalized Solution Over Competitive Off-the-Shelf Implants by a Factor of Over 10 to 1
A published retrospective study of patients shows the superiority of Conformis’ implants in several key measures of clinical success and patient satisfaction. According to the study published in The Journal of Bone & Joint Surgery Reviews (JBJS Reviews)1, patients who had undergone bilateral total knee arthroplasty (TKA) preferred their Conformis fully personalized knee compared to their bilateral off-the-shelf knee at a rate of more than 10 to 1.
The study surveyed 47 TKA patients who had a fully personalized Conformis implant in one knee after previously receiving a competitive off-the-shelf implant in their other knee. The study found that 72.3 percent of the patients studied preferred their fully personalized Conformis knee replacement, compared to 6.4 percent of patients who preferred their traditional off-the-shelf (OTS) implant. The remaining 21.3 percent reported no perceived difference between the two knee implants.
The patients in the study were evaluated using the well-established Knee Injury and Osteoarthritis Outcome Score, Joint Replacement (KOOS, JR), the Forgotten Joint Score (FJS) and preference questionnaire methodologies. “New technological advances in the past decades have fueled the race for the ‘happiest patient’ following total knee arthroplasty,” wrote the authors. “Patients in this study with bilateral knee joint replacement showed an overall preference for customized total knee arthroplasty.”
“Participants in the present study overall favored the custom total knee arthroplasty (C-TKA) over the standard prostheses in all surveyed categories: pain, motion, stability, ‘normal’ feel, and overall preference,” noted the authors. “On the basis of these findings, the combination of more precise implant fit and component rotation of C-TKA compared with OTS TKA may have been a contributing factor for lower pain levels and functional superiority, thus contributing to patients’ preference for customized over OTS TKA.”
1Schroeder, Lennart MD1,a; Dunaway, Andrew DO2; Dunaway, Daniel MD3 A Comparison of Clinical Outcomes and Implant Preference of Patients with Bilateral TKA, JBJS Reviews: February 2022 – Volume 10 – Issue 2 – e20.00182 doi: 10.2106/JBJS.RVW.20.00182
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