title: Ulnar nerve instability in children.
abstract: We carried out a cross-sectional study to define the prevalence of ulnar nerve instability and its relationship to ligamentous laxity in the pediatric population. Children were divided into three age groups: group I (0-5 years), group II (6-10 years), and group III (11-18 years). Of children in group I 17.7%, of children in group II 7.7%, and 5.7% of children in group III had dislocating ulnar nerves. With the exception of one patient, nerve instability was bilateral. Of those children possessing all five Wynne-Davies signs of ligamentous laxity, 25.4% had dislocating nerves, 71.9% had subluxing nerves, and 2.6% had stable nerves. Age, ulnar nerve instability, and ligamentous laxity were statistically associated (p < 0.0001).
authors.affiliation: Department of Orthopaedics, Children's Hospital, Boston, MA 02115, USA.
authors.forename: I
authors.initials: I
authors.lastname: Zaltz
authors.forename: P M
authors.initials: PM
authors.lastname: Waters
authors.forename: J R
authors.initials: JR
authors.lastname: Kasser
mesh_terms: D000293:Adolescent; D017677:Age Distribution; D002648:Child; D002675:Child, Preschool; D003430:Cross-Sectional Studies; D005260:Female; D007839:Functional Laterality; D006801:Humans; D007223:Infant; D008297:Male; D010523:Peripheral Nervous System Diseases / Q000453:epidemiology* / Q000209:etiology; D015995:Prevalence; D012307:Risk Factors; D017678:Sex Distribution; D014459:Ulnar Nerve / Q000002:abnormalities* / Q000503:physiopathology