最終更新日：2026/08/06
越野 裕太
コシノ ユウタ
(Yuta Koshino)
論文
- タイトル
- タイトル（英）
- Combining Anterior Talofibular Ligament Ultrasonography With Anterior Drawer Displacement Refines Stratification of Chronic Ankle Instability.
- 参照URL
- https://researchmap.jp/yuta_koshino/published_papers/54489040
- 著者
- 著者（英）
- Takumi Kobayashi,Yuta Koshino,Atsushi Teramoto
- 担当区分
- 概要
- 概要（英）
- Chronic ankle instability (CAI) is commonly defined using symptom-based criteria, but these do not explicitly incorporate structural instability after lateral ankle sprain. Whether ATFL findings and anterior displacement reflect symptoms and function remains unclear. This study examined the relationships among ATFL ultrasonography findings, anterior ankle displacement, perceived ankle instability, and self-reported function. This cross-sectional study included 187 participants classified as healthy, coper, or CAI using International Ankle Consortium criteria and the Cumberland Ankle Instability Tool (CAIT). ATFL ultrasonographic classification and instrumented anterior displacement were assessed by blinded examiners. Self-reported function was assessed using the Foot and Ankle Ability Measure (FAAM) in a subsample. Five groups defined by symptom classification and ATFL ultrasonographic classification were compared. Median anterior ankle displacement was 5.25, 5.63, 7.49, 6.14, and 9.02 mm in the healthy-ATFL normal, coper-ATFL normal, coper-ATFL abnormal, CAI-ATFL normal, and CAI-ATFL abnormal groups, respectively. Displacement was greater in the coper-ATFL abnormal and CAI-ATFL abnormal groups than in the healthy-ATFL normal and coper-ATFL normal groups (all p ≤ 0.004). The CAI-ATFL abnormal group also showed greater displacement than the CAI-ATFL normal group (p = 0.012). CAIT scores did not differ between CAI subgroups. In the FAAM subsample, the CAI-ATFL abnormal group had lower scores than several comparison groups. Section Specialty Area: Section IV: Sports Medicine & Orthopaedics. Investigation performed: Hokkaido Chitose College of Rehabilitation. ATFL ultrasonography stratified anterior ankle displacement within symptom-defined coper and CAI groups, whereas symptom-defined classification and self-reported function did not consistently reflect structural and mechanical findings. Structural assessment may refine phenotypic stratification in CAI research.
- 出版者・発行元
- 出版者・発行元（英）
- 誌名
- 誌名（英）
- Journal of orthopaedic research : official publication of the Orthopaedic Research Society
- 巻
- 44
- 号
- 7
- 開始ページ
- e70248
- 終了ページ
- 出版年月
- 2026年7月
- 査読の有無
- 招待の有無
- 掲載種別
- 研究論文（学術雑誌）
- ISSN
- DOI URL
- https://doi.org/10.1002/jor.70248
- 共同研究・競争的資金等の研究課題
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