Dataset Information

Thoracic Kyphosis and Physical Function: The Framingham Study.

ABSTRACT: OBJECTIVE:To evaluate the association between thoracic kyphosis and physical function. DESIGN:Prospective cohort. SETTING:Framingham, Massachusetts. PARTICIPANTS:Framingham Heart Study Offspring and Third Generation cohort members who had computed tomography (CT) performed between 2002 and 2005 and physical function assessed a mean 3.4 years later (N = 1,100; mean age 61 ± 8, range 50-85). MEASUREMENTS:Thoracic kyphosis (Cobb angle, T4-T12) was measured in degrees using supine CT scout images. Participants were categorized according to Cobb angle to compare those in the highest quartile (Q4, most-severe kyphosis) with those in the lowest quartiles (Q1-Q3). Quick walking speed (m/s), chair-stand time (seconds), grip strength (kg), and self-reported impairments were assessed using standardized procedures. Analyses were adjusted for age, height, weight, smoking, follow-up time, vertebral fractures, and prevalent spinal degeneration. RESULTS:Thoracic kyphosis was not associated with physical function in women or men, and these results were consistent in those younger than 65 and those aged 65 and older. For example, walking speed was similar in adults younger than 65 with and without severe kyphosis (women, Q4: 1.38 m/s, Q1-Q3: 1.40 m/s, P = .69; men, Q4: 1.65 m/s, Q1-Q3: 1.60 m/s; P = .39). CONCLUSION:In healthy relatively high-functioning women and men, kyphosis severity was not associated with subsequent physical function. Individuals at risk of functional decline cannot be targeted based on supine CT thoracic curvature measures alone.

SUBMITTER: Lorbergs AL

PROVIDER: S-EPMC5641235 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature

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Thoracic Kyphosis and Physical Function: The Framingham Study.

Lorbergs Amanda L AL Murabito Joanne M JM Jarraya Mohamed M Guermazi Ali A Allaire Brett T BT Yang Laiji L Kiel Douglas P DP Cupples L Adrienne LA Bouxsein Mary L ML Travison Thomas G TG Samelson Elizabeth J EJ

Journal of the American Geriatrics Society 20170821 10

<h4>Objective</h4>To evaluate the association between thoracic kyphosis and physical function.<h4>Design</h4>Prospective cohort.<h4>Setting</h4>Framingham, Massachusetts.<h4>Participants</h4>Framingham Heart Study Offspring and Third Generation cohort members who had computed tomography (CT) performed between 2002 and 2005 and physical function assessed a mean 3.4 years later (N = 1,100; mean age 61 ± 8, range 50-85).<h4>Measurements</h4>Thoracic kyphosis (Cobb angle, T4-T12) was measured in deg ...[more]

PMID: 28832926

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Project description:BackgroundMenopause would seem to exist as a period of accelerated changes for women and their upper torso mechanics. Whether these anthropometric changes reflect changes in pain states remains unclear. Plausible mechanisms of pain exist for the independent and combined effect of increasing breast size and thoracic kyphosis. Bra fit has the potential to change when the anthropometric measures (chest circumference and bust circumference) used to determine bra size change, such as postmenopausally.Identifying an association between breast size, thoracic kyphosis and thoracic spine pain in postmenopausal women and identifying the relevance of bra fit to this association may be of importance to the future management and education of post-menopausal women presenting clinically with thoracic spine pain.MethodsA cross-sectional study design. Fifty-one postmenopausal bra-wearing women were recruited. Measures included breast size (Triumph International), thoracic kyphosis (flexible curve), bra fitted (Y/N) and pain (Short Form McGill Pain Questionnaire) and tenderness on palpation (posteroanterior pressure testing). These measures were collected in one session at a physiotherapy clinic.ResultsThe majority of the women in this study were overweight or obese and wearing an incorrect sized bra. Pain was significantly related to breast size, body weight and BMI at mid thoracic levels (T7-8). In contrast self-reported thoracic pain was not correlated with age or index of kyphosis (thoracic kyphosis). Women with thoracic pain were no more likely to have their bra professionally fitted whereas women with a higher BMI and larger breasts were more likely to have their bra professionally fitted.ConclusionThe findings of this study show that larger breasts and increased BMI are associated with thoracic pain in postmenopausal women. This is unrelated to thoracic kyphosis. Increasing breast size and how a bra is worn may have biomechanical implications for the loaded thoracic spine and surrounding musculature. Post-menopause women present with a spectrum of anthropometrical changes that have the potential to contribute to altered biomechanics and affect pain states in the thoracic spine.

Project description:The aim of this study was to establish ranges of angular variation in lordotic and kyphotic curves in normal male and female children and adolescents.We developed a pantograph to measure dorsal curves. It consisted of a tripod-supported vertical strut to which an articulated bar was fixed and which had an arm that was able to follow the dorsal surface while moving up and down. This arm was positioned over the C7 spinous process and followed spinous processes to L5 at constant speed. A laser beam was used to ensure the proper positioning of the pantograph and the subject. The motion was recorded using software so that the dorsal outline was represented on a computer screen, and lordotic and kyphotic curves were automatically measured. Before performing the population study, the pantograph was validated in 20 normal subjects by comparing the pantograph measurements with lateral spine radiographs. There were no statistically significant differences in the measurements. There were 718 subjects with no race selection, of whom 350 were males and 368 females ranging in age from 5 to 20 years and presenting normal weight and height. Individuals with generalized ligament laxity, trunk asymmetry, muscle retraction, or any orthopedic anomaly were excluded from the study. Data were analyzed according to age and gender. Student's t tests and regression analysis were performed.Kyphotic curves increased linearly from 25 degrees at 7 years of age to 38 degrees at 19 years of age (kyphotic angle = 25 degrees + 0.58 x age). Lordotic curves increased linearly from 22 degrees at 5 years of age to 32 degrees at 20 years of age (lordotic angle = 24 degrees + 0.51 x age). There were no differences between males and females.The pantograph that was developed for this study was successfully used to establish the normal ranges and progression of thoracic kyphosis and lumbar lordosis in the studied population. Both curves increased linearly with age, with no differences between males and females.

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Thoracic Kyphosis and Physical Function: The Framingham Study.

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Thoracic Kyphosis and Physical Function: The Framingham Study.

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