Clin Biomech (Bristol, Avon) 2007 Jan 9;22(1):52-8. Epub 2006 Oct 9.
Scientific Affairs, Stryker Europe, Thalwil, Switzerland.
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Knee 2015 Jun 17;22(3):217-24. Epub 2015 Mar 17.
State Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, China; Institute of Medical and Biological Engineering, School of Mechanical Engineering, University of Leeds, Leeds, UK.
Background: Articular geometry of knee implant has a competing impact on kinematics and contact mechanics of total knee arthroplasty (TKA) such that geometry with lower contact pressure will impose more constraints on knee kinematics. The geometric parameters that may cause this competing effect have not been well understood. This study aimed to quantify the underlying relationships between implant geometry as input and its performance metrics as output. Read More
Clin Biomech (Bristol, Avon) 2016 Feb 24;32:102-7. Epub 2015 Dec 24.
Bioengineering Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital/Harvard Medical School, 55 Fruit Street, GRJ 1215, Boston, MA 02114, United States. Electronic address:
Background: Transepicondylar axis and geometrical center axis are widely used for investigation of the knee kinematics and component alignment in total knee arthroplasty. However, the kinematic characteristics of these knee axes are not well defined in literature. This study investigated the femoral condylar motion during a dynamic flexion of the knee using different flexion axes. Read More
J Biomech 2008 Jul 5;41(10):2159-68. Epub 2008 Jun 5.
Bioengineering Laboratory, Orthopaedic Surgery, Massachusetts General Hospital/Harvard Medical School, Boston, MA 02114, USA.
Analysis of polyethylene component wear and implant loosening in total knee arthroplasty (TKA) requires precise knowledge of in vivo articular motion and loading conditions. This study presents a simultaneous in vivo measurement of tibiofemoral articular contact forces and contact kinematics in three TKA patients. These measurements were accomplished via a dual fluoroscopic imaging system and instrumented tibial implants, during dynamic single leg lunge and chair rising-sitting. Read More
J Orthop Res 2017 07 19;35(7):1396-1403. Epub 2016 Sep 19.
Department of BEAMS, Université Libre de Bruxelles, Bruxelles, Belgium.
In total knee replacement, the investigation on the exact contact patterns at the post-cam in implanted patients from real in vivo data during daily living activities is fundamental for validating implant design concepts and assessing relevant performances. This study is aimed at verifying the restoration of natural tibio-femoral condylar kinematics by investigating the post-cam engagement at different motor tasks. An innovative validated technique, combining three-dimensional fluoroscopic and finite element analyses, was applied to measure joint kinematics during daily living activities in 15 patients implanted with guided motion posterior-stabilized total knee replacement. Read More