caa a22 4500 605459541 CHVBK 20210128100234.0 cr unu---uuuuu 210128e20150801xx s 000 0 eng 10.1007/s00167-014-3056-8 doi (NATIONALLICENCE)springer-10.1007/s00167-014-3056-8 Quantitative pivot shift assessment using combined inertial and magnetic sensing [Elektronische Daten] [David Labbé, Di Li, Guy Grimard, Jacques de Guise, Nicola Hagemeister] Purpose: The purpose of the study was to demonstrate the feasibility of a new measurement system using micro-electromechanical systems (MEMS)-based sensors for quantifying the pivot shift phenomenon. Methods: The pivot shift test was performed on 13 consecutive anterior cruciate ligament-deficient subjects by an experienced examiner while femur and tibia kinematics were recorded using two inertial sensors each composed of an accelerometer, gyroscope and magnetometer. The gravitational component of the acquired data was removed using a novel method for estimating sensor orientations. Correlation between the clinical pivot shift grade and acceleration and velocity parameters was measured using Spearman's rank correlation coefficients. Results: The pivot shift phenomenon was best characterized as a drop in femoral acceleration observed at the time of reduction. The correlation between the femoral acceleration drop and the clinical grade was shown to be very strong (r=0.84, p<0.0001). Conclusions: The present study demonstrates the feasibility of quantifying the pivot shift using MEMS-based sensors and removing the gravitational component of acceleration using an estimation of sensor orientation for improved correlation to the clinical grade. Springer-Verlag Berlin Heidelberg, 2014 Pivot shift nationallicence Anterior cruciate ligament nationallicence Objective measurement nationallicence Knee joint kinematics nationallicence Inertial sensors nationallicence Acceleration nationallicence Labbé David Laboratoire de recherche en imagerie et orthopédie (LIO), Centre de recherche du Centre hospitalier de l'Université de Montréal (CHUM), Tour Viger, 900, rue Saint-Denis, Local R11.326, H2X 0A9, Montreal, QC, Canada aut Li Di Laboratoire de recherche en imagerie et orthopédie (LIO), Centre de recherche du Centre hospitalier de l'Université de Montréal (CHUM), Tour Viger, 900, rue Saint-Denis, Local R11.326, H2X 0A9, Montreal, QC, Canada aut Grimard Guy Centre hospitalier universitaire Ste-Justine, Montreal, Canada aut de Guise Jacques Laboratoire de recherche en imagerie et orthopédie (LIO), Centre de recherche du Centre hospitalier de l'Université de Montréal (CHUM), Tour Viger, 900, rue Saint-Denis, Local R11.326, H2X 0A9, Montreal, QC, Canada aut Hagemeister Nicola Laboratoire de recherche en imagerie et orthopédie (LIO), Centre de recherche du Centre hospitalier de l'Université de Montréal (CHUM), Tour Viger, 900, rue Saint-Denis, Local R11.326, H2X 0A9, Montreal, QC, Canada aut Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/8(2015-08-01), 2330-2338 0942-2056 23:8<2330 2015 23 167 https://doi.org/10.1007/s00167-014-3056-8 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00167-014-3056-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Labbé David Laboratoire de recherche en imagerie et orthopédie (LIO), Centre de recherche du Centre hospitalier de l'Université de Montréal (CHUM), Tour Viger, 900, rue Saint-Denis, Local R11.326, H2X 0A9, Montreal, QC, Canada aut NATIONALLICENCE 700 1- Li Di Laboratoire de recherche en imagerie et orthopédie (LIO), Centre de recherche du Centre hospitalier de l'Université de Montréal (CHUM), Tour Viger, 900, rue Saint-Denis, Local R11.326, H2X 0A9, Montreal, QC, Canada aut NATIONALLICENCE 700 1- Grimard Guy Centre hospitalier universitaire Ste-Justine, Montreal, Canada aut NATIONALLICENCE 700 1- de Guise Jacques Laboratoire de recherche en imagerie et orthopédie (LIO), Centre de recherche du Centre hospitalier de l'Université de Montréal (CHUM), Tour Viger, 900, rue Saint-Denis, Local R11.326, H2X 0A9, Montreal, QC, Canada aut NATIONALLICENCE 700 1- Hagemeister Nicola Laboratoire de recherche en imagerie et orthopédie (LIO), Centre de recherche du Centre hospitalier de l'Université de Montréal (CHUM), Tour Viger, 900, rue Saint-Denis, Local R11.326, H2X 0A9, Montreal, QC, Canada aut NATIONALLICENCE 773 0- Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/8(2015-08-01), 2330-2338 0942-2056 23:8<2330 2015 23 167