title: Differences in ankle joint complex range of motion as a function of age.
abstract: The purpose of this study was to determine whether gender- and age-related differences in ankle joint complex (AJC) range of motion (ROM) exist in children (range 9-13 years), adolescents (14-16 years), and young adults (17-20 years), and to compare these data with those published for older subjects (21-79 years) using the same protocol. A total of 120 subjects (58 males and 62 females) ranging in age from 9 to 20 years were tested for AJC ROM using a specifically designed 6 degrees of freedom fixture. All measurements were made with respect to a laboratory coordinate system, and represented assessment of active AJC ROM. Angular displacements for plantarflexion, dorsiflexion, inversion, eversion, abduction, and adduction were digitally recorded and compared. AJC ROMs of females aged 9 to 20 years were generally greater than those for males about all three orthogonal axes. Within each gender, there was a consistent trend for AJC ROM to decrease from a maximum at 14 to 16 or 17 to 20 years to a minimum after age 60 years. The average decrement was greater for females than for males. This study provided evidence to support the contention that age-related and gender differences in AJC ROM do exist. The possibility of minimizing the decline in AJC ROM with age requires further investigation.
authors.affiliation: Human Performance Laboratory, Faculty of Physical Education, University of Calgary, Alberta, Canada.
authors.forename: S K
authors.initials: SK
authors.lastname: Grimston
authors.forename: B M
authors.initials: BM
authors.lastname: Nigg
authors.forename: D A
authors.initials: DA
authors.lastname: Hanley
authors.forename: J R
authors.initials: JR
authors.lastname: Engsberg
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000375:Aging / Q000502:physiology*; D000843:Ankle Joint / Q000502:physiology*; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D016059:Range of Motion, Articular; D015203:Reproducibility of Results; D012727:Sex Characteristics