The primary difference between a fixed joint and a hinge joint lies in their capacity for movement: fixed joints allow no movement, whereas hinge joints permit movement in one plane (forward and backward).
Here's a breakdown of the key differences:
| Feature | Fixed Joint | Hinge Joint |
|---|---|---|
| Movement | No movement allowed. | Allows motion in two directions (forward and backward). |
| Function | Provides stability and protection. | Allows for bending and straightening. |
| Examples | Sutures in the skull. | Knees and elbows. |
As defined in the provided reference, a fixed joint is a "joint that does not allow movement," while a hinge joint "only allows motion in two directions, forward and backward." Examples of hinge joints are the knees and elbows.
