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ELBOW JOINT-JOINT & CAPSULE

Anatomy-Upper Limb

ELBOW JOINT-JOINT & CAPSULE

ARTICULATION
1. Combination of synovial hinge & pivot joints made up of three articulations.
2. Radiohumeral - capitellum of the humerus with the radial head.
3. Ulnohumeral - trochlea of the humerus with the trochlear notch (with separate olecranon and coronoid process articular facets) of the ulna.
4. Radioulnar - radial head with the radial notch of the ulna (proximal radioulnar joint).

FLEXION/EXTENSION
5. In full flexion - the coronoid process is received by the coronoid fossa and the radial head is received by the radial fossa on the anterior surface of the humerus.
6. In full extension - the olecranon process is received by the olecranon fossa on the posterior aspect of the humerus.

MOVEMENT
7. The hinge component (allowing flexion-extension) is formed by the ulnohumeral articulation.
8. The pivot component (allowing pronation-supination) is formed by the radiohumeral articulation & proximal radioulnar joints.


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REFERENCES

1. Mcminn. (2003). Last's Anatomy. Elsevier Australia. ISBN:0729537528. Read it at Google Books - Find it at Amazon
2. Netter, F. H. (2019). Atlas of human anatomy. Philadelphia, PA: Elsevier.
3. Image: Gray, Henry. Anatomy of the Human Body. Philadelphia: Lea & Febiger, 1918; Bartleby.com, 2000. www.bartleby.com/107/ [Accessed 20 Nov. 2018].

Ⓒ A. Manickam 2018

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