A gliding joint, also known as a plane joint, is a type of synovial joint that allows bones to slide over one another in a linear direction. According to the reference video, this movement is characterized by the surfaces of bones moving against each other without significant rotation or angular motion.
Characteristics of Gliding Joints
- Movement Type: Primarily allows for sliding or gliding movements.
- Motion: Bones move linearly, not rotationally or angularly.
- Limited Range: Offers a limited range of motion compared to other joint types.
- Structure: Typically involves flat or slightly curved bone surfaces.
- Common Locations: Found in the wrist and ankle bones, as well as between vertebrae.
Examples of Gliding Joints
Here are a few examples of where gliding joints are located:
- Intercarpal joints: These are located between the carpal bones of the wrist, enabling wrist movements.
- Intertarsal joints: Located between the tarsal bones of the ankle, these joints facilitate foot movements.
- Vertebrocostal joints: The joints between the vertebrae and ribs.
- Sacroiliac joints: The joint where the sacrum and the ilium of the pelvis meet, which allows for limited gliding movement.
Functionality
The primary function of a gliding joint is to provide slight movements, such as:
- Flexibility: Allows for some flexibility and movement in the wrist and ankle.
- Stability: Provides stability by allowing adjacent bones to move within a limited range without excessive motion.
- Shock Absorption: Helps distribute force and absorb shock.
Summary Table of Gliding Joints
| Feature | Description |
|---|---|
| Movement | Linear sliding |
| Rotation | Minimal or no rotation |
| Range of motion | Limited compared to other joint types |
| Examples | Intercarpal, intertarsal, vertebrocostal, sacroiliac |
| Function | Flexibility, stability, shock absorption |
In essence, a gliding joint facilitates a smooth sliding motion between bones, contributing to overall skeletal function.
