13:Gliding Joint and Pivot Joint:
Gliding Joint:
- Definition: A gliding joint, also known as a plane joint, is a type of synovial joint in which the articulating surfaces of the bones are flat or slightly curved.
- Description: In a gliding joint, the bones slide or glide past each other in multiple directions, allowing limited movement in various planes.
- Examples: Gliding joints are found in the wrists (between the carpal bones), ankles (between the tarsal bones), and between the articular processes of the vertebrae.
- Function: Gliding joints enable smooth and controlled sliding movements, providing flexibility and allowing for small adjustments in alignment and position.
Pivot Joint:
- Definition: A pivot joint is a type of synovial joint in which a bone rotates around another bone.
- Description: In a pivot joint, the rounded or pointed surface of one bone fits into a ring or notch of another bone, allowing for rotational movement.
- Examples: The pivot joint between the atlas (first cervical vertebra) and the axis (second cervical vertebra), which allows for the rotation of the head. The proximal radioulnar joint in the forearm is another example of a pivot joint.
- Function: Pivot joints facilitate rotational movements, such as turning the head from side to side or rotating the forearm.
Understanding the characteristics and functions of gliding joints and pivot joints is important for personal trainers as it helps in designing exercises that target these specific joints. By incorporating movements that promote gliding or rotational actions, trainers can enhance joint mobility, improve coordination, and support overall joint health.
