Department of Orthopaedic Surgery, Princess Royal Hospital, Telford, Shropshire, UK.
Foot Ankle Surg. 2013 Dec;19(4):245-9. doi: 10.1016/j.fas.2013.06.007. Epub 2013 Jul 12.
The resting angle of the ankle joint may be altered following apparently successful management of Achilles tendon rupture. The reliability of the Achilles Tendon Resting Angle and Calf Circumference measurements was determined.
Three test-retest measurements for reliability assessment were performed on 16 healthy subjects: 10 males and 6 females.
The mean left Achilles Tendon Resting Angle was mean 50.1° (range [26-61]), ICC 0.92 (CI [0.83-0.97]), SEM 2.4°. The mean right Achilles tendon resting angle was mean 49.9° (range [26-60]), ICC 0.91 (CI [0.80-0.96]), SEM 2.6°. The mean left calf circumference was mean 38.5cm (range [33.3-44.2]), ICC 0.97 (CI [0.94-0.98]), SEM 0.6cm, and the mean right calf circumference was mean 38.4cm (range [33.3-43.6]), ICC 0.97 (CI [0.94-0.99]), SEM 0.5cm.
The Achilles Tendon Resting Angle and Calf Circumference at 15cm from the antero-medial joint line had excellent test-retest reliability. These are simple, quick and inexpensive measurements, which have the potential to correlate with tendon elongation and functional outcome. The Achilles tendon resting angle may be used as a guide to tendon length during intra-operative repair and rehabilitation.
跟腱断裂经治疗后，踝关节休息角度可能会发生改变。本研究旨在评估跟腱休息角度（ATR）和小腿周径测量的可靠性。
16 名健康志愿者（10 名男性，6 名女性）分别接受 3 次双侧 ATR 和小腿周径（15cm 处）的重复测量。
左 ATR 均值为 50.1°（范围 26-61°），组内相关系数（ICC）为 0.92（可信区间 [0.83-0.97]），标准误（SEM）为 2.4°；右 ATR 均值为 49.9°（范围 26-60°），ICC 为 0.91（可信区间 [0.80-0.96]），SEM 为 2.6°。左小腿周径均值为 38.5cm（范围 33.3-44.2cm），ICC 为 0.97（可信区间 [0.94-0.98]），SEM 为 0.6cm；右小腿周径均值为 38.4cm（范围 33.3-43.6cm），ICC 为 0.97（可信区间 [0.94-0.99]），SEM 为 0.5cm。
踝关节前内侧关节线 15cm 处的 ATR 和小腿周径测量具有极好的重复性。这些测量方法简单、快速、经济，可能与跟腱延长和功能结果相关。ATR 可用于指导术中跟腱修复和康复过程中的腱长。
