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Ulnar lengthening procedures

D E Quenzer1, R L Linscheid

  • 1Iowa Methodist Medical Center, Des Moines.

Hand Clinics
|August 1, 1993
PubMed
Summary

Ulnar lengthening surgery helps relieve pressure on the lunate bone, slowing carpal collapse. While long-term outcomes are good, the carpal anatomy is not fully restored.

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Area of Science:

  • Orthopedic surgery
  • Hand and wrist anatomy
  • Biomechanics

Background:

  • Progressive carpal collapse can lead to significant pain and dysfunction.
  • The lunate bone is particularly vulnerable to axial compressive forces in certain wrist conditions.

Purpose of the Study:

  • To evaluate the effectiveness of ulnar lengthening in managing progressive carpal collapse.
  • To assess the impact of ulnar lengthening on axial compressive forces within the wrist.

Main Methods:

  • Ulnar lengthening procedure was performed.
  • Axial compressive forces on the lunate were analyzed before and after surgery.
  • Long-term patient outcomes and anatomical changes were monitored.

Main Results:

  • Ulnar lengthening successfully redistributed axial compressive forces.
  • A partial relief of forces on the lunate was observed.
  • The progression of carpal collapse was slowed or halted in the observed cases.

Conclusions:

  • Ulnar lengthening is a viable surgical option for mitigating progressive carpal collapse.
  • The procedure offers satisfactory long-term results by altering wrist biomechanics.
  • Complete anatomical restoration of the carpus is not achieved with this intervention.

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