2024-11-0920180148-639X10.1002/mus.257352-s2.0-85024479801http://dx.doi.org/10.1002/mus.25735https://hdl.handle.net/20.500.14288/9921Introduction This study was undertaken to assess the intra-and interrater reliability of sonographic thickness measurements of the thenar and hypothenar muscles. Methods: The thickness of the thenar and hypothenar muscles of both hands of 15 volunteers (7 male, 8 female) were evaluated with a 4-13-MHZ linear probe by 2 examiners who were blinded to each other's measurements. Interrater reliability was then evaluated. To assess intrarater reliability, the first examiner also performed a second measurement after an interval of at least 1 day. Results: Mean age of the subjects was 31.169.0 years. Test-retest reliability showed excellent intrarater reliability (intraclass correlation coefficient range: 0.889-0.963) and substantial to excellent results for interrater reliability (intraclass correlation coefficient range: 0.692-0.937). Discussion: We found that ultrasound is a reliable method for thickness measurements of the thenar and hypothenar muscles.Clinical neurologyNeurosciencesJournal Article1097-45984177623000035450