CAN A SIMPLIFIED KNEE ABDUCTION MOMENT ESTIMATION BE USED FOR ATHLETE SCREENING? IMPLICATIONS FOR ACL INJURY PREVENTION

Authors

Patrick Mai, Institute of Biomechanics and Orthopaedics, German Sport University CologneFollow
Kevin Bill, Institute of Biomechanics and Orthopaedics, German Sport University CologneFollow
Leon Robertz, Institute of Biomechanics and Orthopaedics, German Sport University CologneFollow
Katharina Glöckler, Institute of Biomechanics and Orthopaedics, German Sport University CologneFollow
Mireia Claramunt-Molet, Digital Health Unit, Eurecat Centre Tecnològic de CatalunyaFollow
Julia Bartsch, Department of Sport Science, University of KonstanzFollow
Mathias Eggerud, Department of Sports Medicine, Norwegian School of Sports SciencesFollow
Anniken Pedersen, Department of Physical Performance, Norwegian School of Sports SciencesFollow
Lasse Mausehund, Department of Sports Medicine, Norwegian School of Sports SciencesFollow
Fredrik Sæland, Department of Sports Medicine, Norwegian School of Sports SciencesFollow
Reidar Bergh Moss, Department of Physical Performance, Norwegian School of Sports SciencesFollow
Steffen Willwacher, Offenburg University of Applied Sciences, Offenburg, GermanyFollow
Uwe Kersting, Institute of Biomechanics and Orthopaedics, German Sport University CologneFollow
Ola Eriksrud, Department of Physical Performance, Norwegian School of Sports SciencesFollow
Tron Krosshaug, Department of Sports Medicine, Norwegian School of Sports SciencesFollow

Category

Injury

Document Type

Paper

Abstract

This study aimed to compare a simplified calculation of the knee abduction moment with the traditional inverse dynamics calculation when athletes perform fake-cut maneuvers with different complexities. In the simplified calculation, we multiply the force vector with its lever arm to the knee, projected onto the local coordinate system of the proximal thigh, hence neglecting the inertial contributions from distal segments. We found very strong ranking consistency using Spearman’s rank correlation coefficient when using the simplified method compared to the traditional calculation. Independent of the tasks, the simplified method resulted in higher moments than the inverse dynamics. This was caused by ignoring the moment caused by segment linear acceleration generating a counteracting moment by about 7%. An alternative to the complex calculations of inverse dynamics can be used to investigate the contributions of the GRF magnitude and its lever arm to the knee.

Recommended Citation

Mai, Patrick; Bill, Kevin; Robertz, Leon; Glöckler, Katharina; Claramunt-Molet, Mireia; Bartsch, Julia; Eggerud, Mathias; Pedersen, Anniken; Mausehund, Lasse; Sæland, Fredrik; Bergh Moss, Reidar; Willwacher, Steffen; Kersting, Uwe; Eriksrud, Ola; and Krosshaug, Tron (2022) "CAN A SIMPLIFIED KNEE ABDUCTION MOMENT ESTIMATION BE USED FOR ATHLETE SCREENING? IMPLICATIONS FOR ACL INJURY PREVENTION," ISBS Proceedings Archive: Vol. 40: Iss. 1, Article 95.
Available at: https://commons.nmu.edu/isbs/vol40/iss1/95