Biomechanics Laboratory, Division of Orthopedic Research, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA; Mayo Graduate School, Mayo Clinic College of Medicine, Center for Clinical and Translational Science, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA.
Rehabilitation Medicine Research Center, Department of Physical Medicine and Rehabilitation, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA.
Gait Posture. 2014 Jul;40(3):369-74. doi: 10.1016/j.gaitpost.2014.05.007. Epub 2014 May 24.
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 (R(2) = 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.
脊柱姿势会影响个体使用手动轮椅的功能。为了最终改善功能，需要直接量化这一人群的脊柱姿势。光纤系统由一系列附着的传感器组成，有望测量坐在轮椅上的个体脊柱的大区域。本研究的目的是确定光纤和光电系统测量脊柱曲率的一致性，并描述自然坐姿时矢状面脊柱曲率的范围。健康成年人（n = 26，13 名男性）参与了研究。每位参与者采用三种坐姿：自然坐姿、前倾坐姿（明显后凸）和伸展坐姿（明显前凸）。将光纤（ShapeTape）和光电（Optotrak）系统应用于 S1 到 C7 的棘突皮肤上，用于测量矢状面脊柱曲率。确定了后凸和前凸区域。采用 Cobb 角样方法量化前凸和后凸。使用广义线性模型和 Bland-Altman 分析评估一致性。Optotrak 和 ShapeTape 获得的曲率值之间存在很强的相关性（R2 = 0.98）。Optotrak 和 ShapeTape 在自然、伸展和前倾姿势下测量的后凸平均值差异分别为 4.30°（95% LOA：-3.43 至 12.04°）、3.64°（95% LOA：-1.07 至 8.36°）和 4.02°（95% LOA：-2.80 至 10.84°）。自然和伸展姿势下存在前凸时，平均值差异分别为 2.86°（95% LOA：-1.18 至 6.90°）和 2.55°（95% LOA：-3.38 至 8.48°）。在自然坐姿下，后凸值的平均值±标准差为 35.07±6.75°。8/26 名参与者检测到前凸：11.72±7.32°。光纤和光电系统在测量矢状面胸腰椎脊柱曲率方面具有良好的一致性。
