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Morteza Meftah Mario John Matin Lendhey Aleksandr Khaimov Amar S. Ranawat Chitranjan S. Ranawat 《The Journal of arthroplasty》2013
The aim of this study was to assess peri-operative complications, safety and efficacy of non-cemented femoral fixation in total hip arthroplasty (THA) as compared to cemented femoral fixation in the elderly population. Fifty-two matched pair analysis of patients with 75 years of age and older (104 patients), who underwent primary THA from June 1997 to December 2004, was performed based on age, sex, BMI, and Charnley classification. Mean age was 81 years (75–101) and the average follow up was 3.1 ± 2.9 years (1.2–6.4). There was no difference in peri-operative cardiopulmonary complications, pulmonary failures, deep venous thrombosis, pulmonary embolus, length of stay, or discharge deposition between the two groups. Non-cemented fixation is safe and effective in patients older than 75 years of age. 相似文献
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Ranawat CS 《Journal of the Southern Orthopaedic Association》2002,11(4):218-226
In the early 1970s, the condylar knee was developed independently in the United States and overseas. The concept of replacing the tibiofemoral condylar surfaces with cemented fixation, along with preservation of the cruciate ligaments, was developed and refined. To correct severe knee deformities, the condylar knee with posterior cruciate-sacrificing design was introduced, also in the early 1970s. By 1974, replacing the patellofemoral joint and either preserving or sacrificing the cruciate ligaments had become standard practice. Subsequently, condylar knee designs were improved to include modularity and noncemented fixation, with use of universal instrumentation. Today, over 19 companies in the United States distribute total knee implants of three different types: cruciate-preserving, cruciate-substituting, and TC-III. Six major companies are actively involved in designing mobile-bearing knees. Future developments, such as navigation-guided surgery, enhanced kinematics, and wear-resistant bearing surfaces with better fixation, promise a consistent evolution for the total knee replacement. 相似文献
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Comparison of the PFC Sigma fixed-bearing and rotating-platform total knee arthroplasty in the same patient: short-term results 总被引:7,自引:0,他引:7
Ranawat AS Rossi R Loreti I Rasquinha VJ Rodriguez JA Ranawat CS 《The Journal of arthroplasty》2004,19(1):35-39
This study compares the fixed-bearing PFC Sigma Total Knee Arthroplasty to the recently introduced rotating-platform version of the same design in 26 patients. At an average follow-up time of 46 months for the fixed-bearing side and 16 months for the rotating-platform side, no significant differences were found in terms of knee preference, knee pain, range of motion, overall satisfaction, or Knee Society scores (KSSs). No revisions, subluxations, dislocations, or infections were seen. Also no radiographic evidence of component loosening, osteolysis, or malalignment was found in any knee. The results of cementing the PFC Sigma rotating-platform, posterior-stabilized total knee show excellent patient satisfaction at 1 year and comparable clinical and radiographic results to the fixed-bearing version. 相似文献
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Minimally invasive total joint arthroplasty: where are we going? 总被引:1,自引:0,他引:1
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Michael A. Gaudiani Peter B. White Narges Ghazi Amar S. Ranawat Chitranjan S. Ranawat 《The Journal of arthroplasty》2018,33(2):590-594