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differentiate between hinge and pivot joint

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differentiate between hinge and pivot joint
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Harsh Meena 1 month, 2 weeks ago

Hinge joints and pivot joints are both types of synovial joints in the human body, but they have different structures and allow for distinct types of movement. Here's a differentiation between the two: **Hinge Joint:** 1. **Structure**: Hinge joints consist of two bones where the cylindrical end of one bone fits into a trough-like surface on the other bone. They are relatively simple in structure. 2. **Location**: Hinge joints are found in the body's limbs and are primarily associated with the elbow and knee. 3. **Range of Motion**: Hinge joints allow movement in one plane, typically along a single axis, like a door hinge. They enable flexion and extension movements. For example, the elbow can flex and extend, while the knee primarily allows flexion and extension. 4. **Examples**: The elbow joint is a classic example of a hinge joint, allowing the arm to bend (flexion) and straighten (extension). **Pivot Joint:** 1. **Structure**: Pivot joints involve a rounded or pointed bone end that rotates within a ring formed by another bone or ligament. This design allows rotational movement. 2. **Location**: Pivot joints are mainly found in the neck and forearm. 3. **Range of Motion**: Pivot joints allow rotational movement around a central axis. For instance, the pivot joint at the top of the neck (atlantoaxial joint) allows the head to turn from side to side. 4. **Examples**: The joint between the first two cervical vertebrae (C1 and C2) in the neck is a pivot joint. It allows you to rotate your head, such as when you shake your head to say "no." In summary, hinge joints permit movement in a single plane (flexion and extension), like the hinge of a door, while pivot joints enable rotational movement around a central axis, as seen in the rotation of the head or forearm.

Abhineet Kumar 2 months, 4 weeks ago

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