No Difference in Clinical and Radiologic Outcomes After Total Knee Arthroplasty With a New Ultra-Congruent Mobile Bearing System and Rotating Platform Mobile Bearing Systems After Minimum 5-Year Follow-Up
Section snippets
Materials and Methods
This retrospective comparative study of the e.motion UC and the LCS RP was performed according to the guidelines of the Institutional Review Board of our institution (C2013192(1152)/Chung-Ang Univ. Hospital).
Clinical Results
Clinical results of both groups are summarized in Table 2. Flexion contractures were significantly improved at final follow-up in both groups (P < 0.05). Further flexions were not significantly decreased at final follow-up in both group (P = 0.26, 0.11). However, preoperative ROM and ROM at final follow-up were not statistically different between the two groups (P = 0.82). KSKS and KSFS significantly improved from preoperative values in both groups (P < 0.001). KSKS and KSFS did not differ
Discussion
This paper describes the short-term results of TKAs in 76 knees of 76 patients, using the e.motion UC type prosthesis with a rotating meniscal component and highly congruent design. Primary TKAs with the e.motion UC type prosthesis achieved satisfactory short-term outcomes, with reliable clinical and radiologic results.
The objectives of this rotating platform design are to reduce the bearing dislocation, polyethylene wear, and kinematic limitations associated with traditional rotating platform
Conclusion
This study describes the clinical and radiological results of the e.motion UC prosthesis compared to the established mobile-bearing prosthesis (LCS RP) with a minimum 5-year follow-up. If appropriate surgical techniques are employed, the e.motion UC prosthesis provides satisfactory clinical performance comparable with that of the established mobile-bearing prosthesis. However, further studies of the long-term durability and functioning of this implant are necessary.
Conflict of Interest Statement
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Cited by (19)
Press-Fit Dual-Pivot Total Knee Arthroplasty: Early Results With a Minimum 2-Year Follow-Up
2022, Journal of ArthroplastyCitation Excerpt :UC tibial polyethylene inserts can reduce the variability of in vivo knee joint kinematics even in the absence of a classic cam and post mechanism [39,40,48], potentially improving patient satisfaction. A number of studies have demonstrated equivocal clinical and radiographic results at midterm follow-up using UC tibial inserts in TKA, compared with conventional articulations [39–47]. However, Kim et al. specifically noted less noise generation in UC TKAs when compared with a posterior-stabilized TKA group with no differences in side-to-side preference, patient satisfaction, or FJSs [73].
Progressive Tibial Bearing Sagittal Plane Conformity in Cruciate-Retaining Total Knee Arthroplasty
2021, Journal of ArthroplastyCitation Excerpt :The PCL was excised in all cases. Ko et al [18] also evaluated 76 e.Motion TKAs where the PCL was excised and compared the results to 155 LCS TKAs and found similar KS, PNS, and FS. These studies also support the notion that using an UC insert is a viable option when the PCL is found to be nonfunctional at the time of surgery.
Long term results of total knee arthroplasties
2018, Bulletin de l'Academie Nationale de MedecineFunctional Outcomes of a New Mobile-Bearing Ultra-Congruent TKA System: Comparison With the Posterior Stabilized System
2015, Journal of ArthroplastyCitation Excerpt :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 [38–40], indicates that the mobile-bearing UC prosthesis provides satisfactory functional outcomes. Our longitudinal comparisons revealed that knees treated with the e.motion-UC exhibited a faster recovery pattern than knees treated with the e.motion-PS.
Clinical relevance of roll-back replacement of ultra congruent total knee arthroplasty: comparison of mid-term outcomes with posterior stabilizing design
2023, Archives of Orthopaedic and Trauma SurgeryComparison of ultra-congruent anterior-stabilized vs. a posterior cruciate substituting total knee arthroplasty for osteoarthritis with severe varus knee deformity: comparable 2 year outcomes with two design
2023, European Review for Medical and Pharmacological Sciences
The Conflict of Interest statement associated with this article can be found at http://dx.doi.org/10.1016/j.arth.2014.09.025.