Saddle joint

Saddle joint
1: Ball and socket joint; 2: Condyloid joint (Ellipsoid); 3: Saddle joint; 4 Hinge joint; 5: Pivot joint;
Ligaments of wrist. Posterior view.
Details
Identifiers
Latin	articulatio sellaris
Dorlands /Elsevier	a_64zPzhtm#/12161531
TA	A03.0.00.048
*Anatomical terminology* [edit on Wikidata]

In a saddle joint (sellar joint, articulation by reciprocal reception) the opposing surfaces are reciprocally concave-convex.

Movements

The movements are as same as in the condyloid joint; that is to say, flexion, extension, adduction, abduction, and circumduction are allowed; but no axial rotation. Saddle joints are said to be biaxial, allowing movement in the sagittal and frontal planes.

Examples

The best examples of saddle joints are the metacarpal 1 (thumb) and the trapezium of the wrist.

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

External links

Wikimedia Commons has media related to Saddle joints.

Diagram at phschool.com

Joints

Types	Fibrous Gomphosis Suture Syndesmosis Interosseous membrane Cartilaginous Synchondrosis Symphysis synovial: Plane joint 1° Hinge joint Pivot joint 2° Condyloid joint Saddle joint 3° Ball and socket joint synostosis by range of motion: Synarthrosis Amphiarthrosis Diarthrosis

Terminology	Kinesiology Anatomical terms of motion Agonist/Antagonist

Motions	general: Flexion/Extension Adduction/Abduction Internal rotation/External rotation Elevation/Depression specialized/upper limbs: Protraction/Retraction Supination/Pronation specialized/lower limbs: Plantarflexion/Dorsiflexion Eversion/Inversion

Components	capsular: Joint capsule Synovial membrane Fibrous membrane Synovial fluid Synovial bursa Articular disk/Meniscus extracapsular: Ligament Enthesis

This article is issued from Wikipedia - version of the Thursday, September 17, 2015. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.