Reliability of three landmarking methods for dual inclinometry measurements of lumbar flexion and extensionReportar como inadecuado

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BMC Musculoskeletal Disorders

, 16:121

Clinical diagnostics and imaging


BackgroundTo examine the intra and inter-rater reliability of lumbar flexion and extension measurements attained using three landmarking methods for dual inclinometry.

MethodsThis was a repeated measures reliability study. Convenience sampling was used to obtain forty volunteer subjects. Two assessors measured a series of lumbar flexion and extension movements using the J-Tech™ dual inclinometer. Three different landmarking methods were used: 1 straight palpation of PSIS and L1, 2 palpation of PSIS and the site of the nearest 5 cm interval point closest to L1 and 3 location of PSIS and 15 cm cephalad. Upon landmarking, adhesive tape was used to mark landmarks and the inclinometer was placed on sites for three trials of flexion and extension. Tape was removed and landmarks were relocated by the same assessor intra-rater for an additional three trials; and this process was repeated by a second assessor inter-rater. Reliability was determined using intra-class correlation coefficients.

ResultsReliability within a set of three repetitions was very high ICCs > 0.90; intra-rater reliability after relocating landmarks was high ICCs > 0.80; reliability between therapists was moderate to high 0.60 > ICCs < 0.76. Assessment of flexion and extension movements by straight palpation of bony landmarks as in the Straight palpation of PSIS and L1 method ICC: Flexion 0.60; Extension 0.74 was found to be marginally less reliable than the other two landmarking measurement strategies ICC: Flexion 0.66; Extension 0.76.

ConclusionAll three methods of land marking are reliable. We recommend the use of the PSIS to 15 cm cephalad method as used in the modified-modified Schobers test as it is the simplest to perform and aligns with current clinical practice.

KeywordsComputerized dual inclinometer Landmarking Reliability  Download fulltext PDF

Autor: Joy C MacDermid - Vanitha Arumugam - Joshua I Vincent - Kimberly L Payne - Aubrey K So


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