Hasegawa Masaki, Suzuki Taku, Kuroiwa Takashi, Oka Yusuke, Maeda Atsushi, Takeda Hiroki, Shizu Kanae, Tsuji Takashi, Suzuki Katsuji, Yamada Harumoto
Department of Orthopaedic Surgery, Fujita Health University, Dengakugakubo, Kutsukake, Toyoake, Aichi Department of Orthopedic Surgery, Keio University School of Medicine, Shinjuku, Tokyo, Japan.
Medicine (Baltimore). 2018 Apr;97(14):e0314. doi: 10.1097/MD.0000000000010314.
This retrospective cohort study was designed to validate the reliability of measurement of the lateral capitellohumeral angle (LCHA), an index of sagittal angulation of the elbow, in healthy children. The results were compared to the Baumann angle (BA), which is a similar concept to LCHA.Sixty-two radiographs of the elbow in healthy children (range, 2-11 years) were reviewed by 6 examiners at 2 sessions. The mean value and reliability of the measurement of LCHA and BA were assessed. Intraobserver reliability and interobserver reliability were calculated using intraclass correlation coefficients (ICCs).The mean LCHA value was 45° (range, 22° to 70°) and the mean BA was 71° (range, 56° to 86°). The ICCs for intraobserver reliability of the LCHA measurements were almost perfect for 2 examiners, substantial for 3 examiners, and moderate for 1 examiner with a mean value of 0.77 (range, 0.57-0.95). For BA measurements, the ICCs were almost perfect for 1 examiner and substantial for 5 examiners with a mean value of 0.74 (range, 0.66-0.83). The ICCs for interobserver reliability between the first and second measurements were both moderate for LCHA (0.56 and 0.51) and for BA (0.52 and 0.50).LCHA showed almost the same reliability in measurement as BA, which is the gold standard assessment for coronal alignment of the elbow. LCHA showed moderate-to-good reliability in the evaluation of sagittal plane elbow alignment.
这项回顾性队列研究旨在验证健康儿童中外侧肱桡关节角（LCHA）测量的可靠性，LCHA是肘部矢状面成角的一个指标。将结果与鲍曼角（BA）进行比较，BA与LCHA是类似的概念。6名检查者在2个时间段对62例健康儿童（年龄范围2 - 11岁）的肘部X线片进行了复查。评估了LCHA和BA测量的平均值及可靠性。使用组内相关系数（ICC）计算观察者内可靠性和观察者间可靠性。LCHA的平均角度值为45°（范围22°至70°），BA的平均角度值为71°（范围56°至86°）。LCHA测量的观察者内可靠性ICC，2名检查者几乎完美，3名检查者为高度一致，1名检查者为中度一致，平均值为0.77（范围0.57 - 0.95）。对于BA测量，ICC，1名检查者几乎完美，5名检查者为高度一致，平均值为0.74（范围0.66 - 0.83）。第一次和第二次测量之间的观察者间可靠性ICC，LCHA（0.56和0.51）及BA（0.52和0.50）均为中度一致。LCHA在测量中的可靠性与BA几乎相同，BA是肘部冠状面排列的金标准评估指标。LCHA在评估肘部矢状面排列方面显示出中度至良好的可靠性。
