Author(s): Mannion A, Troke M
OBJECTIVE. The aim of the study was to compare lumbar range of motion determined using two computerised dynamic motion analysis devices.
Background: Measures of spinal motion are currently used in biomechanical, epidemiological and clinical studies of the low back. It is essential that the various devices used to measure mobility yield similar results, particularly when the absolute values are to be used to assess job suitability, the extent of injury or the need for rehabilitation.
Methods: Eleven volunteers took part. The ranges of lumbar flexion, extension, lateral bending and axial rotation were measured using the CA6000 Spine Motion Analyser and the Polhemus Fastrak system, using standardised protocols.
Results: Each device showed good test-retest reliability in itself (R0.82). The absolute values for range of flexion in a standing posture were significantly higher with the CA6000 than with the Fastrak (though well correlated); those recorded in sitting were comparable for the two devices. Values for lateral bending using the two devices were well correlated, although small (but significant) differences in the absolute values were found. For extension and axial rotation, the devices gave significantly different values that were also poorly correlated. The 'limits of agreement' for the two devices (calculated to examine whether they could be used interchangeably) were rather wide, especially for extension and axial rotation.
Conclusion: The two devices do not always yield comparable measures for spinal mobility. The accuracy of each, in relation to true angular movements of the vertebrae, remains unknown.
Relevance: The two computerised motion analysis devices can each be used reliably in longitudinal studies. However, if 'normal' values for spinal mobility are to be established, they must be considered device-specific.
Referred From: https://www.ncbi.nlm.nih.gov/pubmed/10521644
Author(s): Andriacchi TP, Alexander EJ
Author(s): Meskers CG, Fraterman H, van der Helm FC, Vermeulen HM, Rozing PM
Author(s): Karduna AR, McClure PW, Michener LA, Sennett B
Author(s): Leardini A, Chiari L, Della Croce U, Cappozzo A
Author(s): Ramsey DK, Wretenberg PF
Author(s): Benoit DL, Ramsey DK, Lamontagne M, Xu L, Wretenberg P, et al.
Author(s): Della Croce U, Leardini A, Chiari L, Cappozzo A
Author(s): Piazza SJ, Cavanagh PR
Author(s): Cappozzo A, Della Croce U, Leardini A, Chiari L
Author(s): Brisson N, Lamontagne M, Kennedy MJ, Beaulé PE
Author(s): Astephen JL, Deluzio KJ, Caldwell GE, Dunbar MJ
Author(s): Heiden TL, Lloyd DG, Ackland TR
Author(s): Hurd WJ, Chmielewski TL, Axe MJ, Davis I, Snyder-Mackler L
Author(s): McClure PW, Michener LA, Sennett BJ, Karduna AR
Author(s): Ebaugh DD, McClure PW, Karduna AR
Author(s): McClure P, Greenberg E, Kareha S
Author(s): Robbins SM, Astephen Wilson JL, Rutherford DJ, Hubley-Kozey CL
Author(s): Sigward SM, Powers CM
Author(s): Schmitz A, Ye M2, Shapiro R3, Yang R2, Noehren B4
Author(s): Carson MC, Harrington ME, Thompson N, O'Connor JJ, Theologis TN
Author(s): Leardini A, Benedetti MG, Catani F, Simoncini L, Giannini S
Author(s): DeLuzio KJ, Wyss UP, Li J, Costigan PA
Author(s): Van Herp G, Rowe P, Salter P, Paul JP
Author(s): Dayanidhi S, Orlin M, Kozin S, Duff S, Karduna A
Author(s): McClure PW, Bialker J, Neff N, Williams G, Karduna A
Author(s): Coutts F
Author(s): Laroche D, Duval A, Morisset C, Beis JN, d'Athis P, et al.
Author(s): Bourne DA, Choo AM, Regan WD, MacIntyre DL, Oxland TR
Author(s): Halder AM, Itoi E, An KN
Author(s): Chopp JN, Fischer SL, Dickerson CR
Author(s): Finley MA, Lee RY
Author(s): Michener LA, McClure PW, Karduna AR
Author(s): Rundquist PJ, Anderson DD, Guanche CA, Ludewig PM
Author(s): Ebaugh DD, McClure PW, Karduna AR
Author(s): Rundquist PJ, Ludewig PM
Author(s): Ornetti P, Laroche D, Morisset C, Beis JN, Tavernier C, et al.
Author(s): Koo S, Rylander JH, Andriacchi TP
Author(s): Hunt MA, Guenther JR, Gilbart MK
Author(s): Hooper DM, Morrissey MC, Drechsler WI, Clark NC, Coutts FJ, et al.
Author(s): Rutherford DJ, Hubley-Kozey CL, Stanish WD
Author(s): Levinger P, Menz HB, Morrow AD, Feller JA, Bartlett JR, et al.
Author(s): Pohl MB, Rabbito M, Ferber R
Author(s): Nadeau S, McFadyen BJ, Malouin F
Author(s): Ferber R, Davis IM, Williams DS 3rd
Author(s): Mündermann A, Dyrby CO, Andriacchi TP
Author(s): Gardinier ES, Manal K, Buchanan TS, Snyder-Mackler L
Author(s): Chiari L, Della Croce U, Leardini A, Cappozzo A