Three-Dimensional Knee Kinematics by Conventional Gait Analysis for Eleven Motor Tasks of Daily Living: Typical Patterns and Repeatability

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Lennart Scheys Smith & Nephew, Inc., Leuven

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Alberto Leardini Istituto Ortopedico Rizzoli

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Pius D. Wong Smith & Nephew, Inc., Leuven

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Laurent Van Camp Katholieke Universiteit Leuven

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Barbara Callewaert Katholieke Universiteit Leuven

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Johan Bellemans Katholieke Universiteit Leuven

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Kaat Desloovere Katholieke Universiteit Leuven

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The availability of detailed knee kinematic data during various activities can facilitate clinical studies of this joint. To describe in detail normal knee joint rotations in all three anatomical planes, 25 healthy subjects (aged 22–49 years) performed eleven motor tasks, including walking, step ascent and descent, each with and without sidestep or crossover turns, chair rise, mild and deep squats, and forward lunge. Kinematic data were obtained with a conventional lower-body gait analysis protocol over three trials per task. To assess the repeatability with standard indices, a representative subset of 10 subjects underwent three repetitions of the entire motion capture session. Extracted parameters with good repeatability included maximum and minimum axial rotation during turning, local extremes of the flexion curves during gait tasks, and stride times. These specific repeatable parameters can be used for task selection or power analysis when planning future clinical studies.

Lennart Scheys is with the European Centre for Knee Research, Smith & Nephew, Leuven, Belgium. Alberto Leardini is with the Movement Analysis Laboratory, Istituto Ortopedico Rizzoli, Bologna, Italy. Pius D. Wong is with the European Centre for Knee Research, Smith & Nephew, Leuven, Belgium. Laurent Van Camp is with the Department of Medicine, Katholieke Universiteit Leuven, Leuven, Belgium. Barbara Callewaert is with the Clinical Motion Analysis Laboratory, University Hospital Pellenberg, Katholieke Universiteit Leuven, Leuven, Belgium. Johan Bellemans is with the Department of Medicine, Katholieke Universiteit Leuven, and with the Department of Orthopedics, University Hospital Pellenberg, Katholieke Universiteit Leuven, Leuven, Belgium. Kaat Desloovere (Corresponding Author) is with the Clinical Motion Analysis Laboratory, University Hospital Pellenberg, Katholieke Universiteit Leuven, and with the Department of Rehabilitation Science, Katholieke Universiteit Leuven, Leuven, Belgium.

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