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Related Experiment Videos

Ulnar growth patterns in radial longitudinal deficiency.

Anthony M Sestero1, Ann Van Heest, Julie Agel

  • 1Department of Orthopaedic Surgery, University of Minnesota, Minneapolis, MN 55454, USA. vanhe003@umn.edu

The Journal of Hand Surgery
|July 18, 2006
PubMed
Summary

Surgical centralization in radial longitudinal deficiency (RLD) can increase limb length but may reduce ulnar growth. Careful consideration is needed due to potential loss of ulnar length and recurrent deformities.

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Area of Science:

  • Orthopedic surgery
  • Pediatric orthopedics
  • Limb deformities

Background:

  • Radial longitudinal deficiency (RLD) is a congenital condition affecting the forearm.
  • Understanding the impact of surgical interventions on longitudinal bone growth is crucial for RLD management.

Purpose of the Study:

  • To investigate the association between surgical centralization and the longitudinal growth of the ulna in patients with RLD.

Main Methods:

  • Retrospective review of 90 patients (124 limbs) with RLD, classified by Bayne and Klug.
  • Ulnar length was measured from radiographs and compared to normative data.
  • Surgically treated (centralization) and non-surgically treated groups were compared for ulnar length and growth rate.

Main Results:

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  • Nonsurgically treated limbs achieved 64% of normal ulnar length.
  • Centralization groups achieved 58% (non-notched) and 48% (notched) of normal ulnar length.
  • Average ulnar growth rates were 0.54 cm/y (surgical) and 0.71 cm/y (non-surgical), with no statistical significance.

Conclusions:

  • Wrist centralization effectively lengthens the limb in RLD by repositioning the hand over the ulna.
  • Centralization procedures may lead to a loss of ulnar growth and a high rate of recurrent radial deviation.
  • The benefits of limb lengthening must be balanced against potential adverse effects on ulnar growth and deformity recurrence.