title: Effect of vertebral morphology on lumbar kinematics in elderly subjects with decreased bone mineral density.
abstract: Correlation between kinematics and morphological characteristics of lumbar spine was studied in subjects with varying bone mineral density. Effect of morphological characteristics and bone mineral density on the lumbar spine movement was investigated. Morphology parameters were measured from radiographs and a high-frequency motion tracking device were employed to detect surface movement of lumbar spine. Multiple regression analysis identified factors influencing lumbar kinematics while ANOVA examined differences in morphology with normal bone mineral density, osteopenia and osteoporosis. The results show that morphological characteristics, such as wedging deformity, are indeed influential to the kinematics. Related to our previous report, abnormal lumbar kinematic pattern in the subjects with osteoporosis, this study shows although morphological characteristics were found significantly different among normal, osteopenia, and osteoporosis subjects, the change in lumbar kinematic pattern could not be fully explained by the altered vertebral or disc morphology.
authors.affiliation: Jockey Club Centre for Osteoporosis Care and Control, The Chinese University of Hong Kong, Shatin, Hong Kong. mheather05@gmail.com
authors.forename: Heather
authors.initials: H
authors.lastname: Ting Ma
authors.forename: James F
authors.initials: JF
authors.lastname: Griffith
authors.forename: Zhengyi
authors.initials: Z
authors.lastname: Yang
authors.forename: Anthony Wai Leung
authors.initials: AW
authors.lastname: Kwok
authors.forename: Ping Chung
authors.initials: PC
authors.lastname: Leung
authors.forename: Raymond Y W
authors.initials: RY
authors.lastname: Lee
mesh_terms: D000368:Aged; D001696:Biomechanical Phenomena; D015519:Bone Density; D001851:Bone Diseases, Metabolic / Q000000981:diagnostic imaging* / Q000503:physiopathology*; D005260:Female; D006801:Humans; D008159:Lumbar Vertebrae / Q000000981:diagnostic imaging* / Q000503:physiopathology*; D008297:Male; D009068:Movement; D010024:Osteoporosis / Q000000981:diagnostic imaging* / Q000503:physiopathology*; D011859:Radiography; D016059:Range of Motion, Articular; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity