Fuss (1991) dissects the ulnar collateral ligament of 20 cadaveric elbows to define the anatomy and biomechanical function of its individual fibre bundles, asking which bundles are taut at which joint positions and what actually stops elbow motion at its extremes.
When evaluating UCL injuries or planning reconstruction, recognize that the anterior band — specifically its guiding bundle from the inferior epicondyle edge — is the workhorse of medial elbow stability across all positions; the posterior band matters only at full flexion.
This fibre-bundle framework informs why selective anterior band reconstruction (e.g., the docking or Jobe technique) restores functional valgus stability even when the posterior band is not addressed.
Fuss (1991) dissects the ulnar collateral ligament of 20 cadaveric elbows to define the anatomy and biomechanical function of its individual fibre bundles, asking which bundles are taut at which joint positions and what actually stops elbow motion at its extremes.
When evaluating UCL injuries or planning reconstruction, recognize that the anterior band — specifically its guiding bundle from the inferior epicondyle edge — is the workhorse of medial elbow stability across all positions; the posterior band matters only at full flexion.
This fibre-bundle framework informs why selective anterior band reconstruction (e.g., the docking or Jobe technique) restores functional valgus stability even when the posterior band is not addressed.