title: Reliability of an individually molded shank shell for measuring tibial transverse rotations during the stance phase of walking.
abstract: Use of a shank shell has been shown to estimate tibial transverse rotations better than skin-mounted markers. However, the day-to-day reliability of the transverse tibial rotations using an individually molded shank shell has not been previously investigated. This study examined the between-tests and trials reliability of an individually molded shank shell for measuring peak tibial internal and external rotations, time of peak values, and tibia range of motion during 5 walking trials. The trial-to-trial reliability of tibial transverse rotations was measured in 14 healthy individuals while the test-retest reliability was measured in 10 persons on two occasions. Trial-to-trial reliability for peak transverse rotations, time of peak values, and tibia range of motion ranged from ICC (3,1) 0.59-0.95. The PCA between trials showed that 88-99 % of values were within 3 degrees of agreement. Test-retest reliability for peak rotations, tibia range of motion, and time of peak values ranged from ICC (3,1) 0.70-0.89 with SEM 1.6-2.21 degrees , 0.021 %, and 0.034 %, respectively. The PCA between tests showed that 70-100 % of values were within 3 degrees of agreement. The use of an individually molded shell and the close attachment of the shank shell to the individual's shank resulted in reliable test-retest and trial-to-trial data.
authors.affiliation: School of Exercise Science & Sport Management Southern Cross University Lismore NSW Australia.
authors.forename: Pazit
authors.initials: P
authors.lastname: Levinger
authors.forename: Wendy
authors.initials: W
authors.lastname: Gilleard
authors.forename: Cliff
authors.initials: C
authors.lastname: Coleman
mesh_terms: D000328:Adult; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005260:Female; D005684:Gait / Q000502:physiology*; D006801:Humans; D007089:Image Enhancement / Q000295:instrumentation* / Q000379:methods; D007090:Image Interpretation, Computer-Assisted / Q000295:instrumentation* / Q000379:methods; D010781:Photography / Q000295:instrumentation* / Q000379:methods; D010808:Physical Examination / Q000295:instrumentation* / Q000379:methods; D015203:Reproducibility of Results; D012399:Rotation; D012680:Sensitivity and Specificity; D013977:Tibia / Q000033:anatomy & histology / Q000502:physiology*; D016138:Walking / Q000502:physiology*