Corrected knee dislocation. Coloured X-ray of the dislocated and twisted knee of a female baby being manipulated back into place. The hand of the doctor is purple. The lower leg bones had twisted 180 degrees to the femur (at top) due to the dislocation, with the tibia (shin bone), the thicker of the two lower leg bones, moving to the right of the fibula (thinner lower leg bone). Also the bones on either side of the knee joint were not aligned. Dislocation can occur due to injury such as a hard knock or twisting movement, or may be a congenital (present from birth) abnormality such as here. It can cause considerable pain. For images showing the dislocation before treatment, see M330/1558 to M330/1560.