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Related Experiment Videos

Lateral lunate morphology: an x-ray study

H K Watson1, M Yasuda, P M Guidera

  • 1Connecticut Combined Hand Surgery Service, Hartford Hospital, USA.

The Journal of Hand Surgery
|September 1, 1996
PubMed
Summary
This summary is machine-generated.

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The lunate bone

Area of Science:

  • Orthopedic Surgery
  • Radiology
  • Anatomy

Background:

  • Kauer described the lunate bone as thinner dorsally than volarly.
  • Clinical observations noted volar flexed lunates in patients with scapholunate dissociation.
  • Previous descriptions of lunate morphology require further investigation.

Purpose of the Study:

  • To quantitatively assess lunate bone shape using X-ray imaging.
  • To compare dorsal and volar thicknesses of the lunate.
  • To investigate the prevalence of different lunate morphologies and their relationship to radiolunate angles.

Main Methods:

  • Collected and measured 292 standard lateral X-ray views of the lunate bone.
  • Classified lunate shapes into three types: Type D (thinner dorsal), Type V (thinner volar), and Type N (equal thickness).

Related Experiment Videos

  • Measured radiolunate angles in Type D and Type V lunates.

    • Main Results:

    • Identified three lunate types: 67% Type D, 23% Type V, and 10% Type N.
    • Found no relationship between volar-dorsal thickness ratio and radiolunate angle within groups.
    • Observed a significant difference in radiolunate angles between Type D and Type V lunates.

    Conclusions:

    • The prevalence of Type V lunates challenges Kauer's description of lunate morphology.
    • Lunate bone shape classification provides new insights into wrist anatomy.
    • Further research is warranted to explore factors influencing lunate position and morphology.