title: Joint range-of-motion limitations among young males with hemophilia: prevalence and risk factors.
abstract: Chronic joint disease from repeated bleeding into joints is a serious complication of hemophilia. To measure the extent of and to identify risk factors for deviations from normal in joint range of motion (ROM), we used cross-sectional data collected from 4343 males with hemophilia aged 2 to 19 years who received care at 136 US hemophilia treatment centers (HTCs). Factors examined included age, race/ethnicity, family history, insurance status, age at diagnosis and first HTC visit, frequency of HTC visits, hemophilia type, bleeding frequency, prophylaxis use, inhibitor status, body mass index (BMI), and recent orthopedic procedures. Trained personnel using a standard protocol obtained ROM measurements on 10 joints (hips, knees, shoulders, elbows, and ankles). Analyses used multiple linear regression to model overall ROM limitation separately by disease severity. For persons in all severity groups, joint ROM limitation was positively associated with older age, nonwhite race, and increased BMI. For those with severe disease, ROM limitation was also positively associated with number of bleeds and was greater for those with inhibitors or recent orthopedic procedures. We conclude that ROM limitations begin at an early age, especially for those with severe and moderate disease, and that BMI is an important, potentially modifiable risk factor.
authors: Hematologic Diseases Branch, Division of AIDS, STD, and TB Laboratory Research, National Center for Infectious Disease, Centers for Disease Control and Prevention, Atlanta, GA, USA. msoucie@cdc.gov
authors: J Michael
authors: JM
authors: Soucie
authors: Christy
authors: C
authors: Cianfrini
authors: Robert L
authors: RL
authors: Janco
authors: Roshni
authors: R
authors: Kulkarni
authors: Julie
authors: J
authors: Hambleton
authors: Bruce
authors: B
authors: Evatt
authors: Angela
authors: A
authors: Forsyth
authors: Sue
authors: S
authors: Geraghty
authors: Keith
authors: K
authors: Hoots
authors: Tom
authors: T
authors: Abshire
authors: Randall
authors: R
authors: Curtis
authors: Ann
authors: A
authors: Forsberg
authors: Heather
authors: H
authors: Huszti
authors: Margaret
authors: M
authors: Wagner
authors: Gilbert C
authors: GC
authors: White
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D002648:Child; D002675:Child, Preschool; D003430:Cross-Sectional Studies; D006467:Hemophilia A / Q000150:complications* / Q000503:physiopathology; D002836:Hemophilia B / Q000150:complications* / Q000503:physiopathology; D006801:Humans; D007592:Joint Diseases / Q000453:epidemiology* / Q000503:physiopathology; D008297:Male; D015995:Prevalence; D016059:Range of Motion, Articular / Q000502:physiology*; D012016:Reference Values; D012307:Risk Factors; D012720:Severity of Illness Index