Foot impairments contribute to functional limitation in individuals with ankle sprain and chronic ankle instability

摘要: To investigate the clinical measures of foot posture and morphology, multisegmented joint motion play, strength, dynamic balance in recreationally active young adults with without a history lateral ankle sprain (LAS), copers, chronic instability (CAI). Eighty individuals (healthy: n = 22, coper: n = 21, LAS: n = 17, CAI: n = 20) were included. Foot index (FPI), morphologic measures, (weight-bearing dorsiflexion (WBDF), rearfoot dorsiflexion, plantar flexion, inversion, eversion; forefoot hallux extension), play (proximal distal tibiofibular; talocrural subtalar, forefoot; 1st tarsometatarsal metatarsophalangeal), strength (dorsiflexion, eversion, lesser toe flexion), Star Excursion Balance Test (SEBT) (anterior, posteromedial, posterolateral) assessed. There no group differences FPI or morphological measures. LAS CAI groups had decreased (p = 0.001) greater frontal plane (p < 0.001), first MT sagittal excursion (p < 0.001); increased glide (p = 0.02) internal rotation (p < 0.001) inversion all except compared to healthy controls. The also demonstrated tibiofibular (p = 0.04) general laxity (p = 0.05) SEBT performance (anterior: p = 0.02; posteromedial: p < 0.001; posterolateral: p < 0.001). Individuals have pain, impaired physiologic accessory motion, ligamentous tenderness, ankle. Clinicians should assess multiple segments ankle–foot complex when caring for an CAI. II.