Lohrer H, Nauck T, Gehring D, Gollhofer A
Sportmedizinisches Institut, 60528 Frankfurt am Main.
Sportverletz Sportschaden. 2013 May;27(2):85-90. doi: 10.1055/s-0032-1330768. Epub 2013 Feb 12.
Chronic ankle instability (CAI) is a term that is not well defined until now in spite of a large body of respective literature. Most frequently this umbrella term is used synonymously for functional ankle instability and the role of the mechanical component is not fully understood.
PATIENTS/MATERIAL AND METHODS: In a cohort consisting of 15 patients suffering from CAI we preoperatively investigated the mechanical component using both stress radiographs and ankle arthrometry. The functional impact was measured with the FAAM-G (foot and ankle ability measure, German version). The results were compared with a respective group of 17 uninjured subjects.
Relevant differences were found between the patients and the uninjured groups in the mechanical (stiffness in the 40 - 60 N region of the load deformation curves and the ratio between stiffness in the 125 - 175 N and 40 - 60 N region) and functional analyses (FAAM-G), respectively (p < 0.001 - 0.040). There was no difference found between groups in the upper (125 - 175 N) region of the load deformation curves.
This article helps to clarify the role of the mechanical component in CAI. Patients suffering from both functional and mechanical ankle instability can be detected with the FAAM-G questionnaire and with different ankle stiffness parameters from ankle arthrometer stress testing. These measures differentiate CAI patients from uninjured persons with functionally and mechanically stable ankles. Therefore, these instruments can be recommended to diagnose and quantify the mechanical component in CAI.
尽管已有大量相关文献，但慢性踝关节不稳（CAI）这一术语至今仍未得到明确界定。这个笼统的术语最常被用作功能性踝关节不稳的同义词，其力学因素的作用尚未被完全理解。
患者/材料与方法：在一个由15例CAI患者组成的队列中，我们术前使用应力X线片和踝关节测压法对力学因素进行了研究。使用FAAM-G（足踝能力测量，德文版）来测量功能影响。将结果与17名未受伤受试者的相应组进行比较。
在力学分析（负荷-变形曲线40 - 60 N区域的刚度以及125 - 175 N与40 - 60 N区域刚度之比）和功能分析（FAAM-G）中，分别在患者组和未受伤组之间发现了显著差异（p < 0.001 - 0.040）。在负荷-变形曲线的上部（125 - 175 N）区域，各组之间未发现差异。
本文有助于阐明力学因素在CAI中的作用。通过FAAM-G问卷以及踝关节测压应力测试中不同的踝关节刚度参数，可以检测出同时存在功能性和力学性踝关节不稳的患者。这些测量方法能将CAI患者与踝关节在功能和力学上均稳定的未受伤者区分开来。因此，这些工具可用于诊断和量化CAI中的力学因素。
