Original Research

Knee Range of Motion: Reliability and Agreement of 3 Measurement Methods

Am J Orthop. 2011 December;40(12):E249-E252
By
Peters PG
Herbenick MA
Anloague PA
Markert RJ
Rubino Lj Iii
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We conducted a study to compare 3 methods of measuring knee range of motion: visual estimation by physicians, hand goniometry by physical therapists, and radiographic goniometry. We hypothesized that reliability would be high within and across all tech­niques. We found intrarater and interrater reliability to be satisfactory for visual estimation, hand goniometry, and radiographic goniometry. Interrater reliability across methods did not agree satisfactorily. Between-methods differences in estimating knee range of motion may result from variations in technique among physicians and physical therapists.
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