Yes, a pivot joint allows for rotation.
A pivot joint is a type of synovial joint that enables rotational movement around a single axis. It functions by having one bone with a cylindrical shape that rotates within a ring formed by another bone and its associated ligaments. This arrangement permits movements like pronation and supination of the forearm or the rotation of the head.
Here's a breakdown:
- Definition: A pivot joint is a synovial joint where one bone rotates around another.
- Mechanism: A cylindrical bone end fits into a ring formed by bone and ligament.
- Movement: Primarily rotation.
Examples of Pivot Joints:
| Joint | Location | Movement Allowed |
|---|---|---|
| Atlantoaxial joint | Neck | Rotation of the head (saying "no") |
| Radioulnar joint (proximal) | Forearm | Pronation and Supination |
In summary, the defining characteristic of a pivot joint is rotation. Its structure is specifically designed to facilitate this type of movement.
