David R Labbé1,2, Di Li3,4, Guy Grimard5, Jacques A de Guise3,4, Nicola Hagemeister3,4. 1. 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, Montreal, QC, H2X 0A9, Canada. david.labbe@etsmtl.ca. 2. École de technologie supérieure, Montreal, Canada. david.labbe@etsmtl.ca. 3. 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, Montreal, QC, H2X 0A9, Canada. 4. École de technologie supérieure, Montreal, Canada. 5. Centre hospitalier universitaire Ste-Justine, Montreal, Canada.
Abstract
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.
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.
Authors: Mininder S Kocher; J Richard Steadman; Karen K Briggs; William I Sterett; Richard J Hawkins Journal: Am J Sports Med Date: 2004 Apr-May Impact factor: 6.202
Authors: David R Labbe; Jacques A de Guise; Neila Mezghani; Véronique Godbout; Guy Grimard; David Baillargeon; Patrick Lavigne; Julio Fernandes; Pierre Ranger; Nicola Hagemeister Journal: J Biomech Date: 2010-09-01 Impact factor: 2.712
Authors: Nicola Hagemeister; Gerald Parent; Maxime Van de Putte; Nancy St-Onge; Nicolas Duval; Jacques de Guise Journal: J Biomech Date: 2005-09 Impact factor: 2.712
Authors: Mark P Sena; Ryan DellaMaggioria; Jeffrey C Lotz; Brian T Feeley Journal: Knee Surg Sports Traumatol Arthrosc Date: 2015-09-10 Impact factor: 4.342
Authors: Ata A Rahnemai-Azar; Jan-Hendrik Naendrup; Ashish Soni; Adam Olsen; Jason Zlotnicki; Volker Musahl Journal: Curr Rev Musculoskelet Med Date: 2016-06
Authors: David Sundemo; Eduard Alentorn-Geli; Yuichi Hoshino; Volker Musahl; Jón Karlsson; Kristian Samuelsson Journal: Curr Rev Musculoskelet Med Date: 2016-06
Authors: Richard J Napier; Julian A Feller; Brian M Devitt; Jodie A McClelland; Kate E Webster; Ciaran S J Thrush; Timothy S Whitehead Journal: Orthop J Sports Med Date: 2021-01-22