title: Observations on the cause of bowlegs in achondroplasia.
abstract: An analysis of 148 radiographs of the tibia during skeletal maturation in patients with achondroplasia was performed. The fibula was always longer than the tibia. The distance between the proximal tibial and fibular physis was less than normal throughout growth. The distance between the distal tibial and fibular physis was normal in childhood and became increasingly greater during growth. Tibia varus increased during growth, and there was a particular increase in distal tibia varus toward the end of growth. The altered growth characteristics of the bones suggest a formulation of cause of bowlegs in achondroplasia.
authors.affiliation: Department of Orthopaedics and Rehabilitation, Oregon Health Sciences University, 3181 S.W. Sam Jackson Park Road, OP31, Portland, OR 97201-3098, U.S.A.
authors.forename: Greg
authors.initials: G
authors.lastname: Stanley
authors.forename: Sean
authors.initials: S
authors.lastname: McLoughlin
authors.forename: Rodney K
authors.initials: RK
authors.lastname: Beals
mesh_terms: D000130:Achondroplasia / Q000150:complications* / Q000175:diagnosis*; D000293:Adolescent; D000704:Analysis of Variance; D017760:Bone Malalignment / Q000000981:diagnostic imaging / Q000209:etiology*; D002648:Child; D002675:Child, Preschool; D005260:Female; D005360:Fibula / Q000000981:diagnostic imaging / Q000254:growth & development*; D006801:Humans; D007223:Infant; D008297:Male; D011336:Probability; D011859:Radiography; D012189:Retrospective Studies; D012720:Severity of Illness Index; D013977:Tibia / Q000000981:diagnostic imaging / Q000254:growth & development*