Proper collateral ligament - MRI finger of hand - Axial PD FS - e-Anatomy
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Proper collateral ligament

Ligamentum collaterale proprium

  • Acronym: ACL

Definition

The proper and accessory collateral ligaments of the fingers provide radial-ulnar stability. These ligaments are confluent at their origin from the dorsal proximal phalangeal heads: The proper collateral ligament (PCL) inserts on the proximal phalanx, and the accessory collateral ligament (ACL) fans out to insert on the volar plate.

References

Petchprapa CN, Vaswani D. MRI of the Fingers: An Update. AJR Am J Roentgenol. 2019 Sep;213(3):534-548. doi: 10.2214/AJR.19.21217. Epub 2019 Jul 3. PMID: 31268729.

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