Rating scales for shoulder and elbow range of motion impairment: Call for a functional approach

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Background To evaluate the effect of (new) treatments or analyse prevalence and risk factors of contractures, rating scales are used based on joint range of motion. However, cut-off points for levels of severity vary between scales, and it seems unclear how cut-off points relate to function. The purpose of this study was to compare severity ratings of different rating scales for the shoulder and elbow and relate these with functional range of motion. Methods Often used contracture severity rating scales in orthopedics, physiotherapy, and burns were included. Functional range of motion angles for the shoulder and elbow were derived from a recent synthesis published by our group. Shoulder flexion and elbow flexion range of motion data of patients three months after a burn injury were rated with each of the scales to illustrate the effects of differences in classifications. Secondly, the shoulder and elbow flexion range of motion angles were related to the required angles to perform over 50 different activities of daily living tasks. Results Eighteen rating scales were included (shoulder: 6, elbow: 12). Large differences in the number of severity levels and the cut-off points between scales were determined. Rating the measured range of motions with the different scales showed substantial inconsistency in the number of joints without impairment (shoulder: 14–36%, elbow: 26–100%) or with severe impairment (shoulder: < 10%–29%, elbow 0%–17%). Cut-off points of most scales were not related to actual function in daily living. Conclusion There is an urgent need for rating scales that express the severity of contractures in terms of loss of functionality. This study proposes a direction for a solution.




Oosterwijk, A. M., Nieuwenhuis, M. K., Schouten, H. J., Van Der Schans, C. P., & Mouton, L. J. (2018). Rating scales for shoulder and elbow range of motion impairment: Call for a functional approach. PLoS ONE, 13(8). https://doi.org/10.1371/journal.pone.0200710

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