Excellent Fixation Achieved With Cementless Posteriorly Stabilized Total Knee Arthroplasty |
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Authors: | Steven F Harwin Mark A Kester Arthur L Malkani Michael T Manley |
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Institution: | ? Total Hip and Knee Arthroplasty Service, Beth Israel Medical Center, New York, New York;† Stryker Orthopaedics, Mahwah, New Jersey;‡ Department of Orthopaedic Surgery, University of Louisville School of Medicine, Louisville, Kentucky;§ Homer Stryker Center for Orthopaedic Education, Mahwah, New Jersey |
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Abstract: | Cementless posteriorly stabilized (PS) total knee arthroplasty has not been widely accepted primarily because of prior unpredictable results and concern about micromotion at the tibial fixation interface caused by the cam/post interaction. A prospective consecutive series of 114 cementless, tricompartmental periapatite-coated single-radius PS implants in 110 patients with a mean age 62 years was performed to determine if initial stability and biologic fixation could be achieved. At a mean follow-up of 36 months, all implants demonstrated radiographic evidence of stable biologic fixation with no evidence of loosening, osteolysis, stress shielding, or progressive radiolucent lines. Based on these early results, cementless, periapatite-coated single-radius PS total knee arthroplasty offers marked promise. |
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Keywords: | cementless total knee arthroplasty posteriorly stabilized |
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