Abstract
Introduction People with chronic ankle instability (CAI) have decreased
health-related quality of life (HRQOL), but the differences in HRQOL status
between subgroups of CAI have not been determined. This observational,
cross-sectional study aimed to evaluate and compare physical, social and
psychological aspects of HRQOL in subgroups of patients with CAI.
Methods Ninety patients with CAI and 30 healthy participants were
included. The patients were assigned to 3 subgroups with functional ankle
instability (FAI), mechanical ankle instability (MAI), or mixed functional and
mechanical instability (MIX), based on the talar tilt test, anterior drawer
test, and Cumberland Ankle Instability Tool score. Participants completed the
self-assessed Foot and Ankle Ability Measure (FAAM), Tampa Scale of
Kinesophobia-11 (TSK-11), Fear-Avoidance Beliefs Questionnaire (FABQ), and
Short-Form Health Survey (SF‑36).
Results Significant differences were observed between healthy
participants and each CAI subgroup in regional (FAAM), psychological (TSK-11 and
FABQ) and global (SF-36) measures (p<0,05). The MIX subgroup had a
significantly lower score on the FAAM-sport component, and a higher score on the
TSK-11 and FABQ (p<0,05), than the FAI subgroup. There were no
diffirences between other CAI subgroups in quality of life measures.
Conclusions Patients with MAI and FAI had similar functional deficits in
activities of daily living and sport activities, and greater fear of re-injury.
The MIX subgroup had greater deficits in sport activities and greater fear of
re-injury than the FAI subgroup.