How many types of Joints – There are three types of Joints in humans –
1. Fibrous Joints or Fixed joints or Immovable
Fixed joints, also called immovable joints, are found where bones are not flexible. In such joints, bones have been fused together in such a way that they are fixed to that part, most commonly to create a structure. example of a fixed joint is the skull, which is made up of a number of fused bones.
Other examples include the upper jaw, rib cage, backbone, and pelvic bone, etc.
2. Cartilaginous joints or Slightly Movable joints

3. Synovial joints or Movable joints
are flexible, movable, can slide over one another, are rotatable, and so on. These joints are found in our shoulder joint, neck joint, and knee joint, …
There are six types of Synovial joints –
•1 Ball and Socket joints -Shoulder joint Hip joint
•2 Saddle joint – Thumb
•3 Hinge joint – Ankle, Elbow, & Knee joint
•4 Pivot joint – Neck joint
•5 Condyloid joint – Elbow & Wrist joint ,Carpals of Wrist
•6 Gliding joint – Lower leg to the Ankle joint, Forearm to the Wrist joint. (All synovial joints link)

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Thanks