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Pivot Joint: Difference between revisions
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Ā [[Has joint type::Pivot Joint]] Ā | Ā [[Has joint secondary type::Pivot Joint]] Ā | ||
Ā |?Has joint bones=Bones | Ā |?Has joint bones=Bones | ||
Ā |?Has joint ligaments=Ligaments | Ā |?Has joint ligaments=Ligaments |
Revision as of 09:15, 2 April 2022
A pivot joint is an articulation within a ligamentous ring between the rounded end of one bone and another bone. This type of joint is uniaxial because, although the bone rotates within this ring, it does so around a single axis. An example would be the atlantoaxial joint between C1 (atlas) and C2 (axis) of the vertebrae, permitting side-to-side head motion. Another example is the proximal radioulnar joint. The radius sits in the annular radial ligament, which holds it in place as it articulates with the radial notch of the ulna, which permits pronation and supination.[1]
List of Pivot Joints
- This section is original unported content
Synovial Joint | Bones | Ligaments | Muscles | Innervation | Vasculature | ROM | Volume |
---|---|---|---|---|---|---|---|
Atlanto-axial Joint | C1 (Atlas) C2 (Axis) | C2 | Rotation ~45Ā° each way, flexion-extension ~10Ā° each way, and lateral flexion ~5Ā° each way | ||||
Distal Radioulnar Joint | Radius Ulna | Triangular, anterior distal radioulnar, and posterior distal radioulnar ligaments | Pronation: pronator quadratus, pronator teres; Supination: supinator, biceps brachii | Anterior and posterior interosseous nerves | Anterior and posterior interosseous arteries | ||
Proximal Radioulnar Joint | Radius Ulna | Annular ligament | Articular branches of the musculocutaneous, median, and radial nerve | Radial portion of the peri-articular arterial anastomosis of the elbow joint |
References
- ā Juneja, Pallavi; Munjal, Akul; Hubbard, John B. (2022). "Anatomy, Joints". Treasure Island (FL): StatPearls Publishing. PMID 29939670. Cite journal requires
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