Sharma Abhinav K, Vigdorchik Jonathan M, Kolin David A, Elbuluk Ameer M, Windsor Eric N, Jerabek Seth A
Department of Orthopaedic Surgery, University of California, Irvine, School of Medicine, Orange, CA, USA.
Department of Orthopedic Surgery, Adult Reconstruction and Joint Replacement, Hospital for Special Surgery, New York, NY, USA.
Arthroplast Today. 2022 Jan 18;13:98-103. doi: 10.1016/j.artd.2021.11.018. eCollection 2022 Feb.
The purpose of our study was to assess the accuracy of a commercially available wearable sensor in replicating pelvic tilt movement in both the sitting and standing position in patients before total hip arthroplasty.
This prospective study evaluated patients undergoing a primary unilateral total hip arthroplasty by a single surgeon. Patients were excluded if they had a body mass index (BMI) greater than 40 kg/m. Two sensors were adhered directly to patients' skin at S2 and T12. The S2 angle was recorded on the sensor at maximum flexion and extension angles and compared with pelvic tilt measurements on both sitting and standing radiographs. The primary outcomes recorded were patients' pelvic tilts measured using radiographs (PT-RAD) and sensors (PT-SEN), with Pearson correlation coefficients and intraclass correlation coefficients (ICCs) calculated.
Sixty-one patients (35 males and 26 females) with an average age of 61.5 ± 8.5 years and BMI of 26.9 ± 4.1 kg/m were analyzed. The mean prestanding PT-RAD and PT-SEN were 1.5 ± 8.3 and 1.0 ± 8.1, respectively, with an ICC of 0.98 (95% confidence interval, 0.96-0.99). The mean presitting PT-RAD and PT-SEN were -21.9 ± 12.5 and -20.9 ± 11.7, respectively, with an ICC of 0.97 (95% confidence interval, 0.95-0.98). The multiple R was 0.95 for the prestanding and presitting comparisons. The R for all comparisons between PT-RAD and PT-SEN was >0.85, regardless of BMI or sex.
Although the use of wearable technology may have limitations, based on our results, a wearable sensor is accurate in replicating pelvic tilt movement.
我们研究的目的是评估一种市售可穿戴传感器在全髋关节置换术前患者的坐姿和站姿中复制骨盆倾斜运动的准确性。
这项前瞻性研究评估了由单一外科医生进行初次单侧全髋关节置换术的患者。如果患者的体重指数（BMI）大于40kg/m²，则将其排除。将两个传感器直接粘贴在患者S2和T12水平的皮肤上。在传感器上记录S2角度在最大屈曲和伸展角度时的情况，并与坐姿和站姿X线片上的骨盆倾斜测量值进行比较。记录的主要结果是使用X线片（PT-RAD）和传感器（PT-SEN）测量的患者骨盆倾斜度，并计算皮尔逊相关系数和组内相关系数（ICC）。
分析了61例患者（35例男性和26例女性），平均年龄61.5±8.5岁，BMI为26.9±4.1kg/m²。站立前PT-RAD和PT-SEN的平均值分别为1.5±8.3和1.0±8.1，ICC为0.98（95%置信区间，0.96-0.99）。坐姿前PT-RAD和PT-SEN的平均值分别为-21.9±12.5和-20.9±11.7，ICC为0.97（95%置信区间，0.95-0.98）。站立前和坐姿前比较的复相关系数为0.95。PT-RAD和PT-SEN之间所有比较的相关系数均>0.85，与BMI或性别无关。
尽管可穿戴技术的使用可能存在局限性，但根据我们的结果，可穿戴传感器在复制骨盆倾斜运动方面具有准确性。
