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Orthotic Correction of Sitting Abnormality in Achondroplastic Children

  • A. A. Siebens
  • N. Kirby
  • D. Hungerford
Part of the Basic Life Sciences book series (BLSC, volume 48)

Abstract

The spine of the achondroplastic child is poorly structured for weight-bearing (1, 2):
  1. 1.

    because the pedicles of the vertebrae are shortened, the distance between the two facet joints and between the facet joints and the vertebral body are less than normal. An abnormally narrowed and shortened weight-bearing structure results;

     
  2. 2.

    the ligamentous support of the spine is also affected adversely, for laxity of ligaments is among the characteristics of achondroplasia;

     
  3. 3.

    shortened ribs compound the problems of maintaining an erect trunk by reducing the bracing against flexion of the thoracic spine which longer ribs normally provide.

     

Keywords

Spinal Canal Thoracic Spine Facet Joint Spinal Stenosis Ligamentum Flavum 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    J. A. Bailey, III, Orthopaedic aspects of achondroplasia, J. Bone Joint Surg. (Am) 52:285 (1970).Google Scholar
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    A. A. Siebens, D. S. Hungerford and N. A. Kirby, Curves of achondroplastic spine: a new hypothesis, Johns Hopkins Med. J. 142:205 (1978).PubMedGoogle Scholar
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    J. A. Epstein and L. I. Malis, Compression of spinal cord and cauda equina in achondroplastic dwarfs, Neurology 5:875 (1955).PubMedGoogle Scholar
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    R. Cailliet, “Low back pain syndrome”, Ed. 5, F. A. Davis Co., Philadelphia (1968).Google Scholar
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    S. E. Kopits, Orthopedic complications of dwarfism, Clin. Orthop. 114:153 (1976).PubMedGoogle Scholar
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    A. A. Siebens, D. S. Hungerford and N. A. Kirby, Achondroplasia: effectiveness of an orthosis in reducing deformity of the spine. Arch. Phys. Med. Rehabil. 68:384 (1987).PubMedGoogle Scholar

Copyright information

© Plenum Press, New York 1988

Authors and Affiliations

  • A. A. Siebens
    • 1
  • N. Kirby
    • 2
  • D. Hungerford
    • 3
  1. 1.Rehabilitation ServicesJohns Hopkins and Good Samaritan HospitalsBaltimoreUSA
  2. 2.Rehabilitation ServicesThe Good Samaritan HospitalBaltimoreUSA
  3. 3.Orthopaedic Surgery Dept.Johns Hopkins Univ. and The Good Samaritan HospitalsBaltimoreUSA

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