Electromagnetic sensor system may help assess distal radioulnar joint movement
The accurate assessment of distal radioulnar joint (DRUJ) instability is still challenging as there is no established objective evaluation method. A new measurement method using EMS could evaluate DRUJ movement with high accuracy, reproducibility, and intra- and inter-rater reliability, reveals a study.
The study is published in the Journal of Orthopaedic Surgery and Research.
Shintaro Mukohara and associates from the Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan carried out the present study to develop a noninvasive measurement method using a three-dimensional electromagnetic sensor system (EMS) to quantitatively assess and characterize the normal DRUJ movement in healthy volunteers.
The DRUJ movement was mimicked using both a block model and saw bone. Movement of the models was measured by EMS, and the accuracy and reproducibility of the measurements were assessed. In vivo measurement was performed in a sitting position with the elbow flexed and the forearm pronated.
One sensor each was attached to the distal radial shaft and the ulnar head. The examiners fixed the distal radius and the carpal bones, moved the ulnar head from the dorsal to the volar side and measured the dorsovolar translation.
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