All-polyethylene and metal-backed tibial components in total knee arthroplasty: a matched pair analysis of functional outcome |
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| Institution: | 1. Lahey Clinic Medical Center, Burlington, Massachusetts, USA;2. Boston Medical Center, Boston, Massachusetts, USA;1. The Joint Replacement Centers, Ewha Womans University, SeoNam Hospital, Seoul, Republic of Korea;2. The Joint Replacement Centers, Ewha Womans University, MokDong Hospital, Seoul, Republic of Korea;1. Instituto de Química Física, Facultad de Bioquímica, Química y Farmacia, Universidad de Tucumán, San Lorenzo 456, T4000CAN S.M. de Tucumán, Argentina;2. INQUINOA-CONICET, San Lorenzo 456, T4000CAN, San Miguel de Tucumán, Argentina;1. University of Illinois College of Medicine Rockford, Rockford, Illinois, U.S.A.;2. OrthoIllinois, Rockford, Illinois, U.S.A.;1. Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan;2. Department of Orthopaedic Surgery, Kobe Kaisei Hospital, Kobe, Japan;1. Private Practice, Carthage, New York, U.S.A.;2. Department of Orthopaedic Surgery, Guthrie Army Health Clinic, Fort Drum, New York, U.S.A.;3. Clarkson University, Potsdam, New York, U.S.A.;4. Campbell County Memorial Hospital, Gillette, Wyoming, U.S.A. |
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| Abstract: | A group of 98 patients who had primary unilateral total knee arthroplasty (TKA) with cemented, posterior-stabilized knee implants for osteoarthritis were matched for age, diagnosis, weight, body mass index, and presence of comorbid conditions. The patients were followed up with clinical, radiographic, and outcome measures including SF-36 scales and patient outcome questionnaires. Forty-nine patients had all-polyethylene tibial implants (APT), and 49 patents had metal backed tibial implants (MBT) with similar knee implant design and articular geometry. There is no difference among these patient cohorts in the clinical performance or functional outcome of TKA using APT or MBT components in primary TKA at intermediate term follow-up. In consideration of concerns about polyethylene wear, osteolysis, and cost associated with MBT components, these findings may present an opportunity for quality improvement and cost savings with increased utilization of APT in TKA operations. |
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