What makes you sit, stand, or even better, have a well-defined upright body that helps you hold yourself firm on the ground? Your bones. Bones are the most important organs in the human body that are responsible for the normal functioning of a person. Of all the bones, the important functions which involve a lot of movement, such as sitting, standing, or any other activity involves the joints. looking to consult orthopedic doctor? we have best team of orthopedic doctors and surgeon with vast experience in treating joint problems. Center of Orthopaedics at Medisys Hospitals had advanced technology to perform joint replacement surgeries.