The bones of our skeleton system are hard and cannot bend. But, because of joints we can bend, and rotate our limbs. It is possible due to joints. The place in our body where bones meet each other is called as joint. It helps in walking, running, swimming, skipping etc. like movements. There are different types of joints in our body. But the main four types of joints have been discussed here.
(i) Fixed Joint (ii) Pivotal Joint (iii) Ball and Socket Joint (iv)Hinge Joint