Related Experiment Video
Updated: Mar 11, 2026
An Objective and Child-friendly Assessment of Arm Function by Using a 3-D Sensor
Published on: February 12, 2018
Camera-tracking gaming control device for evaluation of active wrist flexion and extension
Dalit Shefer Eini1, Navah Z Ratzon2, Albert A Rizzo3
1Department of Occupational Therapy, Stanley Steyer School of Health Professions Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel; Department of Occupational Therapy, Chaim Sheba Medical Center, Ramat Gan, Israel.
Study Design:
Cross sectional.
Introduction:
Measuring wrist range of motion (ROM) is an essential procedure in hand therapy clinics.
Purpose Of The Study:
To test the reliability and validity of a dynamic ROM assessment, the Camera Wrist Tracker (CWT).
Methods:
Wrist flexion and extension ROM of 15 patients with distal radius fractures and 15 matched controls were assessed with the CWT and with a universal goniometer.
Results:
One-way model intraclass correlation coefficient analysis indicated high test-retest reliability for extension (ICC = 0.92) and moderate reliability for flexion (ICC = 0.49). Standard error for extension was 2.45° and for flexion was 4.07°. Repeated-measures analysis revealed a significant main effect for group; ROM was greater in the control group (F[1, 28] = 47.35; P < .001). The concurrent validity of the CWT was partially supported.
Conclusion:
The results indicate that the CWT may provide highly reliable scores for dynamic wrist extension ROM, and moderately reliable scores for flexion, in people recovering from a distal radius fracture.
Level Of Evidence:
N/A.
