TY - JOUR
T1 - Agreement between fiber optic and optoelectronic systems for quantifying sagittal plane spinal curvature in sitting
AU - Cloud, Beth A.
AU - Zhao, Kristin D.
AU - Breighner, Ryan
AU - Giambini, Hugo
AU - An, Kai Nan
N1 - Funding Information:
This publication was supported by CTSA grant number TL1 TR000137 from the National Center for Advancing Translational Science (NCATS) , NIH grant number T32HD07447 from the National Institute of Child Health and Human Development (NICHD) , and a Promotion of Doctoral Studies Award from the Foundation for Physical Therapy. Its contents are solely the responsibility of the authors and do not necessarily represent the official views of the NIH or the Foundation for Physical Therapy.
Funding Information:
Two authors (RB and BC) are currently supported by NIH training grants. One author, BC, is supported by a scholarship from the Foundation for Physical Therapy.
Funding Information:
One author (KNA) reports grants from NIH funding, outside the submitted work. In addition, Dr. An has the following unrelated patents: 6,668,688 expandable screw apparatus and method issued; 7,060,066 spinal fixation support device and methods of using issued; 8,211,180 temporomandibular joint fossa-eminence prosthesis issued; and 8,216,148 Doppler ultrasound for identifying material properties of a carpal tunnel anatomy issued.
PY - 2014/7
Y1 - 2014/7
N2 - Spinal posture affects how individuals function from a manual wheelchair. There is a need to directly quantify spinal posture in this population to ultimately improve function. A fiber optic system, comprised of an attached series of sensors, is promising for measuring large regions of the spine in individuals sitting in a wheelchair. The purpose of this study was to determine the agreement between fiber optic and optoelectronic systems for measuring spinal curvature, and describe the range of sagittal plane spinal curvatures in natural sitting. Able-bodied adults (n=26, 13 male) participated. Each participant assumed three sitting postures: natural, slouched (accentuated kyphosis), and extension (accentuated lordosis) sitting. Fiber optic (ShapeTape) and optoelectronic (Optotrak) systems were applied to the skin over spinous processes from S1 to C7 and used to measure sagittal plane spinal curvature. Regions of kyphosis and lordosis were identified. A Cobb angle-like method was used to quantify lordosis and kyphosis. Generalized linear model and Bland-Altman analyses were used to assess agreement. A strong correlation exists between curvature values obtained with Optotrak and ShapeTape (R2=0.98). The mean difference between Optotrak and ShapeTape for kyphosis in natural, extension, and slouched postures was 4.30° (95% LOA: -3.43 to 12.04°), 3.64° (95% LOA: -1.07 to 8.36°), and 4.02° (95% LOA: -2.80 to 10.84°), respectively. The mean difference for lordosis, when present, in natural and extension postures was 2.86° (95% LOA: -1.18 to 6.90°) and 2.55° (95% LOA: -3.38 to 8.48°), respectively. In natural sitting, the mean±SD of kyphosis values was 35.07±6.75°. Lordosis was detected in 8/26 participants: 11.72±7.32°. The fiber optic and optoelectronic systems demonstrate acceptable agreement for measuring sagittal plane thoracolumbar spinal curvature.
AB - Spinal posture affects how individuals function from a manual wheelchair. There is a need to directly quantify spinal posture in this population to ultimately improve function. A fiber optic system, comprised of an attached series of sensors, is promising for measuring large regions of the spine in individuals sitting in a wheelchair. The purpose of this study was to determine the agreement between fiber optic and optoelectronic systems for measuring spinal curvature, and describe the range of sagittal plane spinal curvatures in natural sitting. Able-bodied adults (n=26, 13 male) participated. Each participant assumed three sitting postures: natural, slouched (accentuated kyphosis), and extension (accentuated lordosis) sitting. Fiber optic (ShapeTape) and optoelectronic (Optotrak) systems were applied to the skin over spinous processes from S1 to C7 and used to measure sagittal plane spinal curvature. Regions of kyphosis and lordosis were identified. A Cobb angle-like method was used to quantify lordosis and kyphosis. Generalized linear model and Bland-Altman analyses were used to assess agreement. A strong correlation exists between curvature values obtained with Optotrak and ShapeTape (R2=0.98). The mean difference between Optotrak and ShapeTape for kyphosis in natural, extension, and slouched postures was 4.30° (95% LOA: -3.43 to 12.04°), 3.64° (95% LOA: -1.07 to 8.36°), and 4.02° (95% LOA: -2.80 to 10.84°), respectively. The mean difference for lordosis, when present, in natural and extension postures was 2.86° (95% LOA: -1.18 to 6.90°) and 2.55° (95% LOA: -3.38 to 8.48°), respectively. In natural sitting, the mean±SD of kyphosis values was 35.07±6.75°. Lordosis was detected in 8/26 participants: 11.72±7.32°. The fiber optic and optoelectronic systems demonstrate acceptable agreement for measuring sagittal plane thoracolumbar spinal curvature.
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U2 - 10.1016/j.gaitpost.2014.05.007
DO - 10.1016/j.gaitpost.2014.05.007
M3 - Article
C2 - 24909579
AN - SCOPUS:84904049436
SN - 0966-6362
VL - 40
SP - 369
EP - 374
JO - Gait and Posture
JF - Gait and Posture
IS - 3
ER -