ARCHIVES OF PHYSICAL MEDICINE AND REHABILITATION, 2017;

Static postural control in youth with osteogenesis imperfecta type I

Year: 2017

Pouliot-Laforte A, LemayM , Rauch F, Veilleux LN
1) Research Center Sainte-Justine UHC, Marie Enfant Rehabilitation Center, 5200 rue Bélanger, Montréal, Qc, Canada H1T 1C9; (2) Department of physical activity sciences, Université du Québec à Montréal, 141 Avenue du Président-Kennedy, Montréal, Qc, Can

Abstract

Objective:
To assess static postural control in eyes-open and eyes-closed conditions in
4 individuals with osteogenesis imperfecta (OI) type I as compared to typically developing (TD) 5 individuals. The second aim was to explore the relation between postural control and lower-limbs 6 muscle function.
Design:
This is a cross-sectional study. Settings: The study was carried out in 7 the outpatient department of a pediatric orthopedic hospital.
Participants:
22 individuals with OI 8 type I (mean age [range]: 13.1 [6-21] years) and 16 typically developing (TD) individuals (mean 9 age [range]: 13.1 [6-20] years) participated in the study. A convenience sample of participants 10 was selected. Participants were eligible if they were between 6 and 21 years and if they did not 11 have any fracture or surgery in the lower limb in the 12 months prior to testing. Main Outcomes 12
Measures:
Postural control was assessed through static balance tests and muscle function 13 through mechanograhic tests, on a force plateform. Selected postural parameters were: path 14 length and velocity, 90% confidence ellipse area and the ellipse’s medio-lateral and antero15 posterior axes length. Mechanographic parameters were peak force (kN) and peak power (kW) 16 as measured in the Multiple Two-Legged Hopping and the Single Two-Legged jump, 17 respectively.
Results:
OI type I had poorer postural control than TD as indicated by longer and 18 faster displacements and a larger ellipse area. Muscle function was unrelated to postural control 19 in the OI group. Removing visual information resulted in a larger increase in postural control 20 parameters for the OI group compared to the TD group.
Conclusions:
A proprioceptive deficit is 21 suggested to explain decreased postural control in individuals with OI type I.

Keywords: Posturography
GID: 4424; Last update: 24.04.2017