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

中文翻译：

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脚部损伤会导致踝关节扭伤和慢性踝关节不稳的人的功能受限。

目的探讨在有和没有侧踝扭伤（LAS），铜屑病和慢性踝关节不稳（CAI）病史的休闲活跃青年中足部姿势和形态，多节关节运动和运动，力量和动态平衡的临床测量方法）。方法包括80名娱乐活动个体（健康：n = 22，coper：n = 21，LAS：n = 17，CAI：n = 20）。脚姿势指数（FPI），形态学测量，关节运动（负重背屈（WBDF），后脚背屈，plant屈，内翻，外翻;前脚内翻，外翻;拇趾屈曲，伸展），关节活动（近端和胫腓远端; oc骨和tal骨，前足；第一骨和meta趾骨），力量（背屈，plant屈，内翻，外翻，拇指屈曲，小脚趾屈曲），并进行星际飞游平衡测试（SEBT）（前，后内侧，后外侧）。结果FPI或形态学指标均无组间差异。LAS和CAI组的踝背屈降低（p = 0.001），额叶平面运动较大（p <0.001），首次MT足底屈曲和矢状偏移（p <0.001）；滑行滑行增加（p = 0.02）和内旋（p <0.001）和前脚内翻关节活动减少（p <0.001）; 与健康对照组相比，除了背屈以外，其他所有指标的力量均降低（p <0.001）。LAS组还表现出胫腓骨远端（p = 0.04）和前脚一般松弛（p = 0.05）和SEBT表现降低（前：p = 0.02;后内侧：p <0.001;后外侧：p <0.001）。结论患有LAS或CAI的个体疼痛加剧，生理和副关节运动受损，韧带压痛以及脚和脚踝的力量。当照顾患有LAS或CAI的个体时，临床医生应评估踝足复合体的多个部分。证据级别II。