| 제목 |
Sensor Acquired Reachable Workspace in the Elderly Population |
| 소속 |
Wonkwang University School of Medicine & Hospital, Department of Rehabilitation Medicine1, University of California at Irvine School of Medicine, Department of Physical Medicine and Rehabilitation2 |
| 저자 |
Chan Yong Kim1*, Jay J. Han2, Vicky Chan2, Maya N. Hatch2, Min Cheol Joo1, Min Su Kim1† |
| 사사 |
This study was supported by a grant of the Korea Health Technology R&D Project through the Korea Health Industry Development Institute (KHIDI, funded by the Ministry of Health & Welfare, Republic of Korea (grant number: HI19C0750). |
Objective: The elderly population experiences limited upper extremity range of motion (ROM), which may impair activities of daily living. The natural aging process likely reduces shoulder ROM; however, thus far, the primary mode of detection and quantification has been through traditional means such as a goniometer. In this study, we investigated the usefulness of an innovative sensor-acquired reachable workspace for quantifying shoulder ROM for the elderly population.
Methods: Sixty-one subjects participated in the study. A younger cohort of thirty-nine subjects served as a comparison group for the reachable workspace analysis. Reachable workspace and goniometer measurements, including active ROM in shoulder flexion and abduction, were obtained.
Results: Moderate to strong correlations were found between relative surface area (RSA) and goniometric measurements in shoulder flexion and abduction in the elderly population. The test-retest reliability was strong for both dominant and non-dominant total RSA. Compared to the younger cohort, the elderly population demonstrated significantly reduced total RSA in dominant arm with greater reductions in reachability in the upper quadrants.
Conclusion: The reachable workspace demonstrates promise as a simple, quick, and unobtrusive tool for clinicians to assess detailed and quantitative active shoulder ROM in the elderly population.
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Figure 1. Reachable workspace system set up and relative surface area (RSA) envelope output with four quadrants: 1, medial upper quadrant; 2, medial lower quadrant; 3, lateral upper quadrant; 4, lateral lower quadrant (Right shoulder RSA is shown).
Figure 2. Graphical visualization of 3D relative surface area (RSA) output among three different participants A, B, and C. (A) Dominant arm of participant age 36. (B) Dominant arm of participant age 71. (C) Dominant arm of participant age 83.
Figure 2. Graphical visualization of 3D relative surface area (RSA) output among three different participants A, B, and C. (A) Dominant arm of participant age 36. (B) Dominant arm of participant age 71. (C) Dominant arm of participant age 83.
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