کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4078161 1267246 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Kinematics of a cementless mobile bearing posterior cruciate ligament-retaining total knee arthroplasty
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی ارتوپدی، پزشکی ورزشی و توانبخشی
پیش نمایش صفحه اول مقاله
Kinematics of a cementless mobile bearing posterior cruciate ligament-retaining total knee arthroplasty
چکیده انگلیسی

Mobile bearing (MB) total knee arthroplasty (TKA) was developed to provide low contact stress and unconstrained joint motion. We studied a consecutive series of 41 knees with mobile-bearing, posterior cruciate-retaining (CR) TKAs to determine if kinematics resembled normal knees or if kinematics changed over time. Patients were studied at 3 and 21 months average follow-up with weight-bearing radiographs at full extension, 30° flexion and maximum flexion. Shape-matching techniques were used to measure TKA kinematics. Implant hyperextension, maximum flexion and total ROM increased with follow-up. Tibial rotation and condylar translations did not change with time. The medial condyle did not translate from extension to 30°, but translated 5 mm anteriorly from 30° to maximum flexion. Lateral condylar translation was 3 mm posterior from extension to 30°, with no translation from 30° to maximum flexion. Tibiofemoral kinematics in CR-MB-TKAs were stable over time, but did not replicate motions observed in healthy knees. The mobile tibial insert showed rotation and translation at both follow-up examinations, but the patterns of translation were not predictable.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Knee - Volume 16, Issue 3, June 2009, Pages 223–227
نویسندگان
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