Different intraoperative kinematics with comparable clinical outcomes of ultracongruent and posterior stabilized mobile-bearing total knee arthroplasty

Abstract

II.

Functional Outcomes of a New Mobile-Bearing Ultra-Congruent TKA System: Comparison With the Posterior Stabilized System

“…Nonetheless, no notable differences were found for any type of adverse events between the two groups. Our finding is in accordance with previous studies reporting no increased incidence of adverse events with the e.motion-UC [38][39][40]. Our findings lead us to believe that the mobile-bearing UC prosthesis is a reasonably safe alternative to the mobile-bearing PS prosthesis when precise and meticulous surgical techniques are exercised.…”

“…This interesting finding is in agreement with previous studies reporting only a weak correlation between the postoperative maximum flexion and the clinical parameters for pain relief, joint function, and quality of life [41,42]. This study, along with previous midterm studies of TKAs performed with the e.motion-UC [38][39][40], indicates that the mobile-bearing UC prosthesis provides satisfactory functional outcomes.…”

“…To the best of our knowledge, only one study has compared the clinical performance of the e.motion-UC and e.motion-PS prostheses from the same company. Three years after surgery, the authors found that there was no difference in the clinical outcomes, including ROM, for the two groups [40]. However, in this study, the incidence of prosthesis-related adverse events and the temporal patterns of recovery were not addressed.…”

Sagittal radius of curvature, trochlea design and ultracongruent insert in total knee arthroplasty

“…Despite the kinematic differences, studies have found equivalent clinical outcomes between PS TKA and UC inserts. 47,49,50,55,56 Some studies have also shown that UC inserts have comparable clinical outcomes to cruciate retaining TKA. 54,57–59…”

No differences in knee kinematics between active and passive flexion-extension movement: an intra-operative kinematic analysis performed during total knee arthroplasty

“…The most recent uses of Computer-Assisted-Surgery (CAS) in Total Knee Arthroplasty (TKA) provide the possibility to intra-operatively assess the functional behavior of the knee joint [7][8][9][10][11]. In particular, CAS is able to estimate range of motion and laxities associated with the patient and joint-specific surgical reconstruction.…”