Conflict of interest: The authors report no declarations of interest.
The effect of height, weight and head circumference on gross motor development in achondroplasia
Article first published online: 22 JAN 2013
© 2013 The Authors. Journal of Paediatrics and Child Health © 2013 Paediatrics and Child Health Division (Royal Australasian College of Physicians)
Journal of Paediatrics and Child Health
Volume 49, Issue 2, pages E122–E127, February 2013
How to Cite
Ireland, P. J., Ware, R. S., Donaghey, S., McGill, J., Zankl, A., Pacey, V., Ault, J., Savarirayan, R., Sillence, D., Thompson, E., Townshend, S. and Johnston, L. M. (2013), The effect of height, weight and head circumference on gross motor development in achondroplasia. Journal of Paediatrics and Child Health, 49: E122–E127. doi: 10.1111/jpc.12078
- Issue published online: 18 FEB 2013
- Article first published online: 22 JAN 2013
- Manuscript Accepted: 16 JUL 2012
- Royal Children's Hospital Foundation
- anthropometric measurements;
- gross motor development
This study aimed to investigate whether height, weight, head circumference and/or relationships between these factors are associated with gross motor milestone acquisition in children with achondroplasia.
Population-based data regarding timing of major gross motor milestones up to 5 years were correlated with height, weight and head circumference at birth and 12 months in 48 children with achondroplasia born in Australia and New Zealand between 2000 and 2009.
Although as a group children with achondroplasia showed delayed gross motor skill acquisition, within group differences in height, weight or head circumference did not appear to influence timing of gross motor skills before 5 years. The exception was lie to sit transitioning, which appears likely to occur earlier if the child is taller and heavier at 12 months, and later if the child has significant head-to-body disproportion.
This is the first study to investigate the relationship between common musculoskeletal impairments associated with achondroplasia and timing of gross motor achievement. Identification of the musculoskeletal factors that exacerbate delays in transitioning from lying to sitting will assist clinicians to provide more proactive assessment, advice and intervention regarding motor skill acquisition for this population.