Journal of Capital Medical University ›› 2018, Vol. 39 ›› Issue (5): 736-740.doi: 10.3969/j.issn.1006-7795.2018.05.021

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Medium-term follow up the anterior knee pain of mobile and fixed bearing total knee arthroplasty without patella replacement

Qiang Hua1, Wang Guodong1, Guo Ai2, Zhao Erhong1   

  1. 1. Department of Orthopedics, Beijing Tongren Hospital, Capital Medical University, Beijing 100176, China;
    2. Department of Orthopedics, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
  • Received:2018-04-12 Online:2018-09-21 Published:2018-10-20

Abstract: Objective Evaluate the medium-term anterior knee pain result of total knee arthroplasty (TKA) using mobile-bearing (MB) and fixed-bearing (FB) prosthesis.Methods The patients who suffer from osteoarthritis or rheumatoid arthritis and receiving TKA with MB and FB prosthesis during 2006-2009 were followed up,then divided them into two corresponding groups(Group MB,Group FB). All the patients were not be replaced the patella.The postoperative anterior knee pain incidence,Knee Society Function Score,Patellar Score and the Anterior Knee Pain Score were collected,which were compared with preoperation and with another group. The Anterior-Posterior, lateral and Merchant position X-ray pictures were taken to evaluate the patella position.Results 63 patients,85 knees were followed up. The MB group contain 31 patients,45 knees,the mean follow-up period was (5.9±1.1) years(3.9-7.6 years).The FB group contain 30 patients,40 knees,the mean follow-up period was (6.4±1.3) years(34.2-8.1 years).The postoperative scores were significantly higher than preoperation,but there are no differences between the two groups,as well as the anterior knee pain incidence.No patella dislocation or subluxation were found in the postoperative X-ray examination. Conclusion Both mobile-bearing and fix-bearing TKA can relieve anterior knee pain effectively and recovery knee function,the medium-term clinical results are satisfactory.But comparing with FB,the application of the MB prosthesis did not improve the anterior knee pain more.

Key words: total knee arthroplasty, mobile-bearing, fixed-bearing, anterior knee pain, medium-term follow up

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