New mobile-bearing TKA with unique ball and socket post-cam mechanism offers similar function and stability with better prosthesis fit and gap balancing compared to an established fixed-bearing prosthesis
作者: Vivek TiwariPrashant MeshramChang Kyu ParkVivek BansalTae Kyun Kim
作者单位: 1Joint Reconstruction Center, Seoul National University Bundang Hospital
2Department of Orthopedic Surgery, Seoul National University College of Medicine
刊名: Knee Surgery, Sports Traumatology, Arthroscopy, 2019, Vol.27 (7), pp.2145-2154
来源数据库: Springer Journal
DOI: 10.1007/s00167-019-05430-5
关键词: Total knee arthroplastyMobile bearingProsthesis fitFunctionOutcome
英文摘要: Abstract(#br) Purpose(#br)A mobile-bearing (MB) posterior-stabilized total knee arthroplasty (TKA) system with ball and socket post-cam mechanism has been developed with the aims of better prosthesis fit and enhanced stability. However, the data are limited to compare its clinical outcomes with an already established fixed-bearing (FB) implant design.(#br) Methods(#br)This is a prospective randomized study comparing 260 patients in the MB group and 133 patients in FB group with a minimum 2 years of follow-up. Intraoperative variables, post-operative functional outcomes and incidence of adverse events were compared.(#br) Results(#br)MB group showed better prosthesis fit as the incidence of over-hang of femoral component at junction (medial: 1% vs. 5% and lateral: 2% vs 4%, p < 0.001) and...
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