Reliability and validity of rigid lift and pelvic leveling device method in assessing functional leg length inequality

The Journal of Orthopaedic and Sports Physical Therapy
M T GrossJ B Renner

Abstract

Clinicians commonly include an assessment of leg length inequality (LLI) as a component of a musculoskeletal examination. Little research is available, however, documenting reliability and validity of clinical methods for assessing LLI. The purpose of this study was to determine the reliability and validity of assessing functional LLI using a pelvic leveling device. Subjects were 19 women and 13 men between the ages of 18 and 55 who reported having a diagnosed or suspected LLI. Clinical determination of LLI was made by placing rigid lifts under the suspected shorter lower extremity until the leveling device indicated that the iliac crests were level. This measurement was made twice by one investigator and once by a second investigator. Standing radiographic measurements of LLI using rigid lifts were used to establish validity of the clinical method. Intraclass correlation coefficients [ICC(2,1)] and absolute difference values were computed to assess reliability and validity. The mean absolute difference between the two clinical measurements of LLI by the same investigator was 0.29 cm (+/- 0.52), with an ICC = 0.84. The mean absolute difference between clinical measurements of LLI by the two investigators was 0.49 cm (+/- 0.46),...Continue Reading

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Citations

Aug 5, 2008·International Orthopaedics·Arkan S Sayed-NoorPer Wretenberg
Feb 7, 2014·Chiropractic & Manual Therapies·John J TrianoRodger Tepe
Aug 19, 2000·The Journal of Orthopaedic and Sports Physical Therapy·M D Beissel
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