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Achondroplasia: should the urinary tract be evaluated in children?

  • Gemma McKenzie1,
  • David Wilkinson1,
  • James Fernandes2,
  • Julian Roberts1,
  • Ewan MacKinnon1Email author and
  • Prasad Godbole1
Cerebrospinal Fluid Research20096(Suppl 1):S55

Published: 3 February 2009


Micturition VolumeHealth AssessmentSpinal StenosisOrthopaedic ClinicAchondroplasia


Achondroplasia is the most common form of heritable bone dysplasia. Very little is known about the urological manifestations of achondroplasia in the paediatric age group with respect to voiding dysfunction and the need to screen for the same. This aim of this study was to determine whether routine 'screening' of children with achondroplasia for voiding abnormalities was necessary.

Materials and methods

Twenty-six patients with achondroplasia and a mean age of 14 years (7–18) referred to the orthopaedic clinic for potential limb lengthening surgery underwent a health assessment. An MRI scan was performed in the presence of neurological and/or urological symptoms. Six patients with confirmed spinal stenosis were referred for urological assessment, 4 of which had urological symptoms. Non-invasive urodynamics were carried out in all including bladder pre and post micturition volumes and uroflowmetry.


All 4 children with urological symptoms demonstrated evidence of voiding dysfunction on non-invasive urodynamic assessment and required further intervention and follow up. The remaining two had no evidence of voiding dysfunction and was discharged from urological care.


We recommend urological surveillance of all paediatric achondroplastic patients with neurological/urological symptoms and confirmed spinal stenosis on MRI. In this series 15.3% of the cohort had abnormal urological assessments prompting further monitoring. The significance of this finding is unknown due to the small patient cohort and a prospective study of non-invasive urodynamic assessments in all achondroplastic children with MRI evidence of spinal pathology and long-term outcomes is necessary.

Authors’ Affiliations

Department of Paediatric Urology, Sheffield Children's Hospital, Western Bank, Sheffield, UK
Department of Paediatric Orthopaedics, Sheffield Children's Hospital, Western Bank, Sheffield, UK


© McKenzie et al; licensee BioMed Central Ltd. 2009

This article is published under license to BioMed Central Ltd.