Static postural control in youth with osteogenesis imperfecta type I

Publication date: Available online 19 April 2017
Source:Archives of Physical Medicine and Rehabilitation
Author(s): Annie Pouliot-Laforte, Martin Lemay, Frank Rauch, Louis-Nicolas Veilleux
ObjectiveTo assess static postural control in eyes-open and eyes-closed conditions in individuals with osteogenesis imperfecta (OI) type I as compared to typically developing (TD) individuals. The second aim was to explore the relation between postural control and lower-limbs muscle function.DesignThis is a cross-sectional study.SettingsThe study was carried out in the outpatient department of a pediatric orthopedic hospital.Participants22 individuals with OI type I (mean age [range]: 13.1 [6-21] years) and 16 typically developing (TD) individuals (mean age [range]: 13.1 [6-20] years) participated in the study. A convenience sample of participants was selected. Participants were eligible if they were between 6 and 21 years and if they did not have any fracture or surgery in the lower limb in the 12 months prior to testing.Main Outcomes MeasuresPostural control was assessed through static balance tests and muscle function through mechanograhic tests, on a force plateform. Selected postural parameters were: path length and velocity, 90% confidence ellipse area and the ellipse's medio-lateral and antero-posterior axes length. Mechanographic parameters were peak force (kN) and peak power (kW) as measured in the Multiple Two-Legged Hopping and the Single Two-Legged jump, respectively.ResultsOI type I had poorer postural control than TD as indicated by longer and faster displacements and a larger ellipse area. Muscle function was unrelated to postural control in the OI group. Removing visual information resulted in a larger increase in postural control parameters for the OI group compared to the TD group.ConclusionsA proprioceptive deficit is suggested to explain decreased postural control in individuals with OI type I.



http://ift.tt/2pCo3qS