The point at which two separate bones meet is called a joint Depending on the type of movement they allow, joints can be of three types: fixed, slightly movable and movable joints.
1. Fitted or Immovable joints:
In this type of joint, no movement is possible between the two bones. The structures between the bones of the skull box are examples of immovable joints.
2. Slightly movable joints:
Only very little (partial) movement occurs between the two bones. The joint between a rib and the breast bone or between the vertebrae is the example for slightly movable joint.
3. Freely movable joints:
In this type, varying degree of movements is possible between the two bones forming the joint. There are six major types of movable joints.
Condition:
The different types of movable joints are:
| Joint | Examples |
| Ball and Socket | Shoulder Hip |
| Hinge | Elbow Knee Ankle |
| Pivot | Spine (Atlas / Axis joint at the top) |
| Condyloid | Wrist |
| Gliding | Spine (between the bony processes of the vertebrae) |
| Saddle | Thumb, shoulder and inner ear. |