Department of Orthopaedic Surgery, Nagoya City University Graduate School of Medical Science, Nagoya, Japan.
Department of Orthopaedic Surgery, Nagoya City University Graduate School of Medical Science, Nagoya, Japan; Department of Sports and Fitness, Faculty of Wellness, Shigakkan University, Obu, Japan.
Ultrasound Med Biol. 2019 Aug;45(8):1970-1976. doi: 10.1016/j.ultrasmedbio.2019.03.022. Epub 2019 May 4.
Femoral anteversion has been assessed with ultrasound using femoral neck tilting angle (FN-TA); however, femoral torsion angle (FTA), which is defined using FN-TA and condylar axis tilting angle, has not been assessed with ultrasound. This study aimed to establish the ultrasonographic assessment of FTA (US-FTA) by comparing data obtained through US-FTA and computed tomography (CT). Twenty-one patients (age range, 38-82 y) with 21 intact hips were included. In the US-FTA, the femoral head and anterior tubercle of the greater trochanter were used as bony landmarks. The intra-rater and inter-rater reliabilities and standard error of measurement (SEM) of US-FTA were 0.994 (SEM 0.93) and 0.994 (SEM 0.94), respectively. A strong agreement was found between FTA variables obtained with ultrasound and CT (R = 0.939, p < 0.001). Ultrasound is useful and can be a valid alternative to CT for the evaluation of the femoral torsion angle without radiation exposure.
股骨前倾角已通过使用股骨颈倾斜角（FN-TA）的超声检查进行评估；然而，尚未通过超声检查评估定义为使用 FN-TA 和髁间轴倾斜角的股骨扭转角（FTA）。本研究旨在通过比较通过超声 FTA（US-FTA）和计算机断层扫描（CT）获得的数据来建立 FTA 的超声评估（US-FTA）。共纳入 21 例（年龄 38-82 岁）的 21 个完整髋关节。在 US-FTA 中，股骨头和大转子前结节被用作骨性标志。US-FTA 的内部和外部评估者可靠性和测量标准误差（SEM）分别为 0.994（SEM 0.93）和 0.994（SEM 0.94）。超声和 CT 获得的 FTA 变量之间存在很强的一致性（R=0.939，p<0.001）。超声检查是有用的，并且可以作为一种无辐射暴露的 CT 替代方法，用于评估股骨扭转角。
