Differences in hip torque ratios between individuals with femoroacetabular impingement syndrome and asymptomatic individuals: A cross-sectional study

Diogo Gomes; Heiliane de Brito Fontana; Guilherme V da Costa; Daniel C Ribeiro; Richard P Canella; Taylor Ferreira; Caroline Ruschel; Marcelo P de Castro

doi:10.1016/j.clinbiomech.2022.105809

Differences in hip torque ratios between individuals with femoroacetabular impingement syndrome and asymptomatic individuals: A cross-sectional study

Clin Biomech (Bristol, Avon). 2022 Dec:100:105809. doi: 10.1016/j.clinbiomech.2022.105809. Epub 2022 Oct 27.

Authors

Diogo Gomes¹, Heiliane de Brito Fontana¹, Guilherme V da Costa², Daniel C Ribeiro³, Richard P Canella⁴, Taylor Ferreira⁵, Caroline Ruschel², Marcelo P de Castro⁶

Affiliations

¹ Morphological Sciences Department, Biomechanics Laboratory, Federal University of Santa Catarina, Florianópolis, Brazil.
² Center of Health and Sports Science, University of the State of Santa Catarina, Florianópolis, Brazil.
³ Centre for Health, Activity and Rehabilitation Research (CHARR) School of Physiotherapy, University of Otago, New Zealand.
⁴ Core Centre of Orthopedics and Rehabilitation, Florianópolis, Brazil.
⁵ FisioLab Institute, Florianópolis, Brazil.
⁶ FisioLab Institute, Florianópolis, Brazil. Electronic address: marcelo.peduzzi.castro@gmail.com.

PMID: 36335663
DOI: 10.1016/j.clinbiomech.2022.105809

Abstract

Background: Hip torque ratios are considered a useful measure for patients with hip pain. However, evidence regarding this measure for patients with femoroacetabular impingement syndrome is scarce. The primary aim of this study was to compare hip external-internal rotation and abduction-adduction torque ratios between patients with femoroacetabular impingement syndrome and asymptomatic individuals. The secondary aim was to compare hip torque ratios between the asymptomatic group and femoroacetabular impingement syndrome patients grouped according to the severity of symptoms and functional limitations.

Methods: Hip abduction-adduction and external-internal rotation torque ratios of 134 individuals with femoroacetabular impingement syndrome and 134 asymptomatic matched controls was assessed through isokinetic testing. Severity of symptoms and functional limitations was assessed through the iHOT-33. Mann Whitney U and Kruskall-Wallis tests were used to compare hip torque ratios between asymptomatic individuals and patients with femoroacetabular impingement syndrome and to patients with femoroacetabular impingement syndrome with different severities of symptoms and functional limitations.

Findings: No differences were identified in hip abduction-adduction (U = 7659.5, p = 0.192) and external-internal rotation (U = 8787.5, p = 0.764) torque ratios between patients with femoroacetabular impingement syndrome and asymptomatic individuals. Hip abduction-adduction torque ratio was higher (p = 0.0127) in patients with a severe state (median = 1.80, IQR = 0.61) when compared to asymptomatic individuals (median = 1.52, IQR = 0.45) (moderate effect size, r = 0.45).

Interpretation: Patients with severe symptoms and functional limitations related to FAI syndrome presented greater hip abduction-adduction torque ratio than asymptomatic individuals, suggesting a decreased adduction torque capacity relative to abduction torque in this subgroup of femoroacetabular impingement.

Keywords: FAI; Function; Hip pain; Hip rehabilitation; Isokinetic; Torque ratio.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Cross-Sectional Studies
Femoracetabular Impingement*
Humans