Planar joints

Definition

Planar joints, also known as gliding joints, are a type of synovial joint where the articulating surfaces are flat or slightly curved. These joints allow for limited movement, primarily sliding actions between bones.

5 Must Know Facts For Your Next Test

1. 1. Planar joints are found in locations such as the intercarpal and intertarsal joints of the wrists and ankles.
2. 2. The primary movements allowed by planar joints are gliding or sliding motions.
3. 3. These joints typically have articular capsules that enclose the articulating surfaces and contain synovial fluid to reduce friction.
4. 4. Planar joints contribute to stability and flexibility in the skeletal system by allowing small adjustments between bones.
5. 5. Common examples include the acromioclavicular joint and the facet joints of the vertebrae.

Related terms

Synovial Joint: A type of joint that is surrounded by a fluid-filled capsule allowing for greater mobility between bones

Articular Capsule: A connective tissue structure that encloses synovial joint structures and contains synovial fluid

Facet Joint: A type of planar joint located between the articular processes of adjacent vertebrae