Citation

Van Houcke J, Schouten A, Steenackers G, Vandermeulen D, Pattyn C, Audenaert EA. Appl. Ergon. 2017; 63: 99-105.

Affiliation

Department of Orthopaedic Surgery and Traumatology, Ghent University Hospital, De Pintelaan 185, 9000 Ghent, Belgium; Department of Electromechanics, Op3Mech Research Group, University of Antwerp, Salesianenlaan 90, 2660 Hoboken, Belgium.

Copyright

(Copyright © 2017, Elsevier Publishing)

DOI

10.1016/j.apergo.2017.04.008

PMID

28502412

Abstract

Sitting is part of our daily work and leisure activities and can be performed in different configurations. To date, the impact of different sitting configurations on hip joint loading has not been studied. We therefore evaluated the hip joint reaction force (HJRF) and hip flexion angle in a virtual representative male Caucasian population by means of musculoskeletal modelling of three distinct sitting configurations: a simple chair, a car seat and a kneeling chair configuration. The observed median HJRF in relation to body weight and hip flexion angle, respectively, was 22.3% body weight (%BW) and 63° for the simple chair, 22.5%BW and 79° for the car seat and 8.7%BW and 50° for the kneeling chair. Even though the absolute values of HJRF are low compared to the forces generated during dynamic activities, a relative reduction of over 50% in HJRF was observed in the kneeling chair configuration. Second, the hip flexion angles were both in the kneeling chair (-29°) and simple chair configuration (-16°) lower compared to the car seat and, as such, did not reach the threshold value for femoroacetabular conflict. In conclusion, the kneeling chair appears to hold the greatest potential as an ergonomic sitting configuration for the hip joint.

Copyright © 2017 Elsevier Ltd. All rights reserved.

Language: en

Keywords

Biomechanics; Hip joint; Sitting configuration