Abstract
Introduction
Patients with femoroacetabular impingement syndrome (FAIS) experience decreased function. Consequently, earlier studies have evaluated gait biomechanics in these patients, but a larger study evaluating gait biomechanics before and after an intervention standardising gait speed is lacking. We aimed at investigating gait kinematics and kinetics in patients with FAIS compared with pain-free controls before and 1 year after hip arthroscopic surgery. Secondary, we aimed at analysing gait pattern separately for the sexes and to investigate associations between peak kinematics and kinetics and the Copenhagen Hip and Groin Outcome Score (HAGOS).
Materials and methods
Sixty patients with FAIS and 30 pain-free controls were tested at a standardised gait speed (1.40 m/s ± 10%). Patients were tested twice: before and 1 year after surgery. Kinematics and kinetics were recorded using infrared high-speed cameras and a force plate. Participants answered HAGOS.
Results
The largest difference among groups was that gait differed between males and females. Neither before nor after surgery could we demonstrate large alterations in gait pattern between patients and pain-free controls. Male patients demonstrated associations between peak kinematics and kinetics and HAGOS Sports function.
Conclusions
Gait pattern was only vaguely altered in patients with FAIS compared with pain-free controls before and after surgery when using at standardised gait speed. Hence, analysing gait in patients with FAIS does not seem of major importance. Nevertheless, there was an association between HAGOS Sports function and peak kinematics and kinetics in male patients, implying that there could be a clinical importance.
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Acknowledgements
We would like to thank Sebastian Skejø for his invaluable help with data analysis.
Funding
This study was funded by Gigtforeningen, The Health Research Fund for the Central Region of Denmark, Augustinus Fonden, Aase og Ejnar Danielsens Fond, Direktør Jacob Madsen og Hustru Olga Madsens Fond, Fonden til Lægevidenskabens Fremme, Familien Hede Nielsens Fond, Gurli & Hans Engell Friis Foundation, and Horsens Regional Hospital.
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The study was approved by the Central Denmark Region Committee on Biomedical Research Ethics (1–10-72–239-14) and the Danish Data Protection Agency (1–16-02–499-14).
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The study was registered at clinical trials.org (NCT02306525).
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Kierkegaard, S., Mechlenburg, I., Dalgas, U. et al. Hip kinematics and kinetics in patients with femoroacetabular impingement syndrome before and 1 year after hip arthroscopic surgery. Results from the HAFAI cohort. Arch Orthop Trauma Surg 142, 2019–2029 (2022). https://doi.org/10.1007/s00402-021-04209-z
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DOI: https://doi.org/10.1007/s00402-021-04209-z