Functions:
It is mobile and strong joint of the body. It helps in almost all leg movements, its mobility helps to move the leg freely and its strength helps for walking, running and jumping etc.
Diseases:
As this joint helps in almost all movements so there are many chances of pain or injury. Displacement of the joints, ligaments tear and sprains, bursitis and torn cartilage are common injury. Also osteoarthritis, rheumatoid arthritis and gout is very common in knee joint.
Interesting Facts:
The body weight directly affects the knee so it necessary to maintain ideal body weight.