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The Reliability and Validity of Hip Range of Motion Measurement using a Smart phone Operative Patient
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 Title & Authors
The Reliability and Validity of Hip Range of Motion Measurement using a Smart phone Operative Patient
Park, Sun-Wook; Kim, Myoung-Soo; Bae, Hyo-Sun; Cha, Yong-Ho;
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PURPOSE: The aims of this study were to assess the intra-tester and inter-tester reliability and validity of hip range of motion using a smart phone in hip operative patients. METHODS: Twenty-five patients (eight total hip arthroplasty and seventeen femur neck fracture) participated in this study. The range of motions in active and passive hip flexion, abduction and external rotation were measured with a goniometer and smart phone over two times by two observers. The intra-tester and inter-tester reliability were evaluated using the intraclass correlation coefficient (ICC2,1). The validity was measured by Pearson`s correlation coefficient RESULTS: The intra-observer reliability was good in all measured items (ICC>0.78). The inter-observer reliability was high with ICC (>0.90). All correlation coefficients of smart phone and goniometer was greater than 0.85 and showed a significant positive correlation (p<0.01). CONCLUSION: The range of motion measurement with a smart phone showed acceptable reliability. Therefore, it could be convenient and have economical benefits to measure the range of motion of the hip joint using a smart phone.
Hip joint;Range of motion;Reliability and Validity;Smart phone;
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