Related Experiment Videos
[Triangular fibrocartilage complex: functional anatomy and histology]
1Department of Orthopaedic Surgery, School of Medicine, Keio University, Tokyo, Japan.
Nihon Seikeigeka Gakkai Zasshi
|April 1, 1995
Summary
The triangular fibrocartilage complex (TFCC) acts as a hammock, stabilizing wrist joints during pronation and supination through three interconnected components. This functional model explains TFCC stability and mobility.
Area of Science:
- Orthopedic anatomy
- Biomechanics
- Histology
Context:
- The triangular fibrocartilage complex (TFCC) is crucial for wrist stability and function.
- Understanding its dynamic behavior during forearm rotation is essential for diagnosing and treating wrist injuries.
Purpose:
- To investigate the functional anatomy and histology of the TFCC.
- To propose a dynamic functional model of the TFCC during pronation and supination.
Summary:
- The study examined 20 cadaver wrists, analyzing the TFCC's proximal and distal components during rotation.
- The TFCC consists of a distal hammock-like component, a proximal radioulnar stabilizing ligament, and an ulnar stabilizing component.
- A suspension theory is proposed, explaining how these components interact to maintain wrist stability and mobility.
Impact:
- Provides a novel functional model for the TFCC, enhancing understanding of wrist biomechanics.
- Offers insights into the TFCC's role in pronation and supination, aiding in clinical assessments and treatment strategies.
- Highlights the TFCC's cushioning function and the interconnectedness of its components for joint stability.