INTRATESTER AND INTERTESTER RELIABILITY AND VALIDITY OF MEASURES OF INNOMINATE BONE INCLINATION

Determination of innominate bone inclination in standing is frequently assessed in postural analysis of subjects. Currently, no goniometer f or objective assessment of innominate bone inclination in standing is commercially available. The purpose of this study was to determine the intratester and intertester reliability and validity of measures take n with a pelvic inclinometer. The intraclass correlation coefficient ( ICC) for repeated measures of the pelvic inclinometer fixed to a mecha nical model was 0.99. The intertester reliability of using the hand-he ld pelvic inclinometer to determine inclination on a mechanical model was ICC = 0.99. In measures of 20 male subjects by three testers, the ICC for intertester reliability was 0.95 and the range of ICCs for int ratester measures was 0.92-0.96. Measures by the inclinometer had a hi gh degree of reliability compared with the criterion roentgenographic measure, ICC = 0.93. Measurement of the inclination of both left and r ight innominate bones of a subject required only 2 minutes, indicating clinical applicability,