Joints are the parts of your body where your bones meet. Joints allow the bones of your skeleton to move. Joints include:shoulders ,hips, elbows, knees.Joint pain refers to discomfort, aches, and soreness in any of the body’s joints. Joint pain is a common complaint. It doesn’t typically require a hospital visit.Sometimes, joint pain is the result of an illness or injury. Arthritis is also a common cause of joint pain. However, it can also be due to other conditions or factors.