Impaired hip muscle stregth, function and patient reported outcomes in women with hip abductor tendon tears: a cross sectional study of 62 patients and 24 healthy volunteers

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Abstract

Objective
The impact of hip abductor tendon tears (HAT) on hip muscle-strength in women is lacking. We investigated maximal isometric hip muscle-strength (MIHS) in women with MRI verified HAT scheduled for surgery and compared with age-matched healthy volunteers (HV), and whether MIHS was correlated with patient-reported outcomes (PRO) and the 30-second sit-to-stand-test (STS).
Design
Cross-sectional, comparative study.
Methods
MIHS was assessed with a handheld dynamometer in 62 patients and 24 HV (100% women) with mean±SD age of 55±12 and 53±6 years. PROs used: Copenhagen Hip and Groin Outcome score (HAGOS) and Oxford Hip Score (OHS). STS assess lower-limb functional capacity.
Results
Patients compared to HV:
- had lower MIHS in abduction (mean difference [95%CI], Nm/kg) (-0.41 [-0.52;-0.29]), extension (- 0.36 [-0.47;-0.25]) and external rotation (-0.24 [-0.32;-0.17])) (p<0.001).
- reported 53-87 and 26 points lower in all HAGOS subgroups and OHS (p<0.001).
- completed fewer repetitions in the STS (12 ±4 vs. 18 ±5 repetitions, (p<0.001)).
A significant correlation was observed between STS performance and MIHS in abduction (r=0.47, p<0.001), extension (r=0.41, p=0.005) and external rotation (r=0.49, p<0.001).
Conclusion
Women with MRI verified HAT scheduled for surgical repair demonstrated substantial impairments in MIHS, lower limb functional capacity and PRO compared to HV.
Original languageEnglish
JournalJospt Open
Volume1
Issue1
Pages (from-to)1-17
Number of pages17
DOIs
Publication statusPublished - 2023

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