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Updated: Aug 15, 2026
06:22
Optical Sectioning and Visualization of the Intervertebral Disc from Embryonic Development to Degeneration
Published on: July 8, 2021
Summary
The human radioulnar articular disc facilitates forearm rotation. Ligamentous attachments allow the radius and disc to move freely on the ulna during pronation and supination.
Area of Science:
- Orthopedic anatomy
- Biomechanics of the wrist
Background:
- The human radioulnar articular disc is a key component of the wrist joint.
- Its precise anatomical attachments and functional role in forearm rotation require detailed understanding.
Purpose of the Study:
- To describe the anatomical structure of the human radioulnar articular disc.
- To elucidate the ligamentous connections that enable forearm rotation.
Main Methods:
- Anatomical dissection and description of the human radioulnar articular disc.
- Identification of its attachments to the radius, ulna, and articular capsule.
Main Results:
- The radioulnar articular disc extends medially from the radius's articular cartilage.
- Vascular connective tissue with arcuate ligamentous bands anchors the disc's medial border to the ulna and capsule.
- Loose attachments connect the disc's ventral and dorsal borders to the articular capsule.
Conclusions:
- The described anatomical arrangements of the radioulnar articular disc and its associated ligaments permit free rotation of the radius and disc relative to the ulna.
- These structures are crucial for normal pronation and supination movements of the forearm.
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