Ginglymus
Ginglymus
Ginglymus (pronunciation: /ɡɪŋˈɡlɪməs/), also known as a hinge joint, is a type of joint that permits movement in one plane only, similar to the hinge of a door. The term originates from the Greek word "ginglymos", which means "hinge".
Etymology
The term "ginglymus" is derived from the Greek word "ginglymos" (γίγγλυμος), which translates to "hinge". This term was used in ancient Greek anatomy to describe joints that operate similarly to the mechanical hinges, allowing movement in a single plane.
Anatomy
A ginglymus joint is a synovial joint that allows only flexion and extension. Examples of ginglymus joints in the human body include the elbow joint, the interphalangeal joints of the fingers and toes, and the ankle joint. These joints are formed by the articulation of two bones, one of which features a convex surface that fits into a concave depression on the other bone.
Related Terms
- Synovial joint: A type of joint in the body that is surrounded by a thick, flexible membrane forming a sac into which is secreted a viscous fluid that lubricates the joint.
- Elbow joint: A hinge joint between the lower end of the humerus and the upper end of the radius and ulna.
- Interphalangeal joints: Hinge joints located between the phalanges of the fingers and toes.
- Ankle joint: A hinge joint that connects the foot with the leg, allowing up and down movement of the foot.
External links
- Medical encyclopedia article on Ginglymus
- Wikipedia's article - Ginglymus
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