Clin Biomech (Bristol, Avon) 2006 Jul 22;21(6):603-9. Epub 2006 Mar 22.
STRYKER Europe, Department for Scientific Affairs, Florastrasse 13, 8800 Thalwil, Switzerland.
Download full-text PDF
Clin Orthop Relat Res 2006 Jun;447:105-11
Biomechanics Laboratory, Legacy Research & Technology Center, Portland, OR 97232, USA.
Mobile and fixed-bearing knee prostheses are likely to generate distinct strain gradients in the proximal tibia. The resulting strain distribution in the proximal tibia governs bone remodeling and affects implant integration and stability. We determined the effects of fixed and mobile-bearing total knee prostheses on strain distribution at the proximal tibia. Read More
Clin Orthop Relat Res 2002 Jan(394):243-53
Department of Orthopaedic Surgery, University of Zurich, Switzerland.
Both total knee alignment methods, the anatomic and classic, seek to achieve stability in flexion and extension. However, posterior femoral condyle referencing (anatomic alignment) combined with perpendicular tibial resection (classic alignment) results in a 3 degree relative internal rotation of the femoral component with lateral joint opening. The current cadaver study investigated the influence of total knee alignment methods and femoral component malrotation (3 degrees and 6 degrees internal and external malrotation) on femorotibial laxity. Read More
J Biomech 2008 Dec 18;41(16):3332-9. Epub 2008 Nov 18.
Scientific Affairs, Stryker Europe, Thalwil, Switzerland.
Patellofemoral complications are among the important reasons for revision knee arthroplasty. Femoral component malposition has been implicated in patellofemoral maltracking, which is associated with anterior knee pain, subluxation, fracture, wear, and aseptic loosening. Rotating-platform mobile bearings compensate for malrotation between the tibial and femoral components and may, therefore, reduce any associated patellofemoral maltracking. Read More
Rev Chir Orthop Reparatrice Appar Mot 2006 Sep;92(5):473-84
Centre Orthos, 427, rue Paradis, 13008 Marseille.
Purpose Of The Study: Rotatory malposition of the femoral component of a unicompartmental knee arthroplasty (UKA) is a key element of mechanical failure despite proper alignment and position of the tibial implant. The purpose of this study was to describe a method for measuring femoral implant rotation on the anteroposterior x-ray using an original geometric model.
Material And Methods: 276 medial UKA (227 non-cemented Uni Goeland, Depuy; Uni, AMP) and 49 cemented (Miller-Galante, Zimmer) were reviewed and analyzed at a mean 11 years (range 7 - 15) using the Knee Society Score. Read More