title: Ankle strength and functional limitations in children and adolescents with type I osteogenesis imperfecta.
abstract: OBJECTIVE
  To determine whether children with type I osteogenesis imperfecta (OI) exhibit ankle plantar flexor weakness and whether this correlates with physical function.
  
  
  METHODS
  Twenty children and adolescents with type I OI and 20 age-matched controls (age 6-18 years) participated in a single evaluation session. Data included strength assessment, Gillette Functional Assessment Questionnaire, Pediatric Outcome Data Collection Instrument (PODCI), and Faces Pain Scale-Revised.
  
  
  RESULTS
  Ankle plantar flexor weakness was evident in the OI group compared with the control group. Heel-rise strength correlated with ankle isometric plantar flexion strength. Limitations in PODCI subscales-sports and physical function and pain/comfort-are present in the OI group.
  
  
  CONCLUSIONS
  Ankle plantar flexor weakness is present in children and adolescents with type I OI and correlates with function. Gillette Functional Assessment Questionnaire, PODCI, and strength assessment are valuable evaluation tools for children and adolescents with type I OI and can aid therapists in goal setting.
authors.affiliation: Shriners Hospitals for Children, Chicago, Illinois 60707, USA. acaudill@shrinenet.org
authors.forename: Angela
authors.initials: A
authors.lastname: Caudill
authors.forename: Ann
authors.initials: A
authors.lastname: Flanagan
authors.forename: Sahar
authors.initials: S
authors.lastname: Hassani
authors.forename: Adam
authors.initials: A
authors.lastname: Graf
authors.forename: Ruta
authors.initials: R
authors.lastname: Bajorunaite
authors.forename: Gerald
authors.initials: G
authors.lastname: Harris
authors.forename: Peter
authors.initials: P
authors.lastname: Smith
mesh_terms: D000293:Adolescent; D000842:Ankle / Q000503:physiopathology*; D002648:Child; D002675:Child, Preschool; D004185:Disability Evaluation; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007537:Isometric Contraction / Q000502:physiology*; D008297:Male; D053580:Muscle Strength / Q000502:physiology*; D053581:Muscle Strength Dynamometer; D018908:Muscle Weakness / Q000209:etiology / Q000503:physiopathology* / Q000534:rehabilitation; D018482:Muscle, Skeletal / Q000503:physiopathology*; D010013:Osteogenesis Imperfecta / Q000150:complications / Q000503:physiopathology / Q000534:rehabilitation; D012720:Severity of Illness Index; D011795:Surveys and Questionnaires