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Related Experiment Videos

The annular ligament-revisited.

James W Barnes1, Vijit L Chouhan1, Nkem C Egekeze1

  • 1Department of Orthopedic Surgery, University of Missouri-Kansas City School of Medicine, Kansas City, MO, USA.

Journal of Shoulder and Elbow Surgery
|October 11, 2017
PubMed
Summary
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This study clarifies the layered anatomy of lateral elbow ligaments. The superior oblique band and inferior oblique band are key components of the annular ligament, with specific measurements and insertion points detailed.

Area of Science:

  • Orthopedic Anatomy
  • Elbow Biomechanics
  • Surgical Anatomy

Background:

  • Conflicting information exists regarding the anatomy and nomenclature of the annular ligament.
  • Cadaveric dissections are crucial for resolving anatomical ambiguities in orthopedic structures.

Purpose of the Study:

  • To clarify the detailed anatomy and terminology of the annular ligament.
  • To elucidate the layered structure of the lateral elbow ligament complex.

Main Methods:

  • Dissection of 19 cadaver elbows (7 fresh frozen, 12 embalmed).
  • Identification, photography, and measurement of target ligamentous structures by independent observers.

Main Results:

  • The lateral elbow ligaments consist of 3 layers: superficial (collateral ligaments), deep (superior oblique band [SOB] and inferior oblique band [IOB] of the annular ligament), and capsular.
Keywords:
Annular ligamentanterior oblique bandelbow anatomyelbow lateral ligament complexinferior oblique bandsuperior oblique band

Related Experiment Videos

  • Measurements of the annular ligament, SOB, and IOB were recorded, with the IOB inserting on the anterior proximal ulna.
  • The accessory lateral collateral ligament is a distinct thickening, separate from the IOB.

    • Conclusions:

    • The SOB and IOB are consistently present components of the lateral elbow ligament complex.
    • The anatomical description of the annular ligament and its associated bands is refined.
    • Clarification of these structures aids in understanding elbow joint stability and potential injury mechanisms.