Agreement between fiber optic and optoelectronic systems for quantifying sagittal plane spinal curvature in sitting

Beth A. Cloud, Kristin D Zhao, Ryan Breighner, Hugo Giambini, Kai Nan An

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

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.

Original languageEnglish (US)
Pages (from-to)369-374
Number of pages6
JournalGait and Posture
Volume40
Issue number3
DOIs
StatePublished - 2014

Fingerprint

Spinal Curvatures
Lordosis
Kyphosis
Posture
Wheelchairs
Myelinated Nerve Fibers
Linear Models
Spine
Skin
Population

Keywords

  • Fiber optic technology
  • Posture
  • Sitting
  • Spinal curvatures
  • Spine

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Rehabilitation
  • Biophysics

Cite this

Agreement between fiber optic and optoelectronic systems for quantifying sagittal plane spinal curvature in sitting. / Cloud, Beth A.; Zhao, Kristin D; Breighner, Ryan; Giambini, Hugo; An, Kai Nan.

In: Gait and Posture, Vol. 40, No. 3, 2014, p. 369-374.

Research output: Contribution to journalArticle

Cloud, Beth A. ; Zhao, Kristin D ; Breighner, Ryan ; Giambini, Hugo ; An, Kai Nan. / Agreement between fiber optic and optoelectronic systems for quantifying sagittal plane spinal curvature in sitting. In: Gait and Posture. 2014 ; Vol. 40, No. 3. pp. 369-374.
@article{327be86572a94f3fbe2464d094192e19,
title = "Agreement between fiber optic and optoelectronic systems for quantifying sagittal plane spinal curvature in sitting",
abstract = "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.",
keywords = "Fiber optic technology, Posture, Sitting, Spinal curvatures, Spine",
author = "Cloud, {Beth A.} and Zhao, {Kristin D} and Ryan Breighner and Hugo Giambini and An, {Kai Nan}",
year = "2014",
doi = "10.1016/j.gaitpost.2014.05.007",
language = "English (US)",
volume = "40",
pages = "369--374",
journal = "Gait and Posture",
issn = "0966-6362",
publisher = "Elsevier",
number = "3",

}

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

PY - 2014

Y1 - 2014

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.

KW - Fiber optic technology

KW - Posture

KW - Sitting

KW - Spinal curvatures

KW - Spine

UR - http://www.scopus.com/inward/record.url?scp=84904049436&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84904049436&partnerID=8YFLogxK

U2 - 10.1016/j.gaitpost.2014.05.007

DO - 10.1016/j.gaitpost.2014.05.007

M3 - Article

C2 - 24909579

AN - SCOPUS:84904049436

VL - 40

SP - 369

EP - 374

JO - Gait and Posture

JF - Gait and Posture

SN - 0966-6362

IS - 3

ER -