What is a femoral head?

femoral head, also called femur head, is the bone knob at the top of the femur or femur. This ball similar to the thigh bone is articulated or connected, with a cup similar to indenting in the pelvis and forms a hip joint. It is a classic example of the ball and the joint of the plinth, the type of synovial joint that allows you to move along many axes.

The thigh bone is a large bone placed in the thigh of the foot. In four -legged animals, such as horses, femur is found only in two rear legs. On the lower limb there are two knobby exchange that articulates with the knee. The femur shaft is long and cylindrical and culminates at the top with three exchanges called larger trochanter, a smaller trochanter and a femoral head. The femoral head is the middle, the largest of these three projections and a small branch of the bone called the neck is supported. The neck shows the femoral head inside towards the side at an angle of about 126 degrees, so it can articulate with acetabulum. An irregularly small angle or an abnormally large angle cant Knock-kopny or bowleggedness.

The

femoral head is almost spherical, smooth and coated with cartilage. This cartilage helps protect femur and pelvis during the movement of the hip joint. The HIP joint is a synovial joint, more specifically the ball and a socket joint. Synovial joints are characterized by a synovial membrane that eliminates the lubricating synovial fluid, which fills the space between the articulated bones called the synovial cavity. This fluid keeps the cartilage coating on the femoral head and slippery acetabul to prevent the friction and damage of the bones.

The main source of blood to the femoral head is supplied with media and lateral femoral perimeter artery. If these arteries are damaged, the femoral head depends on the small artery in the femur's head, the nepligamentum teres. This liga is attached to the acetabul at one end and on the fovea head of the femur on the other. Fovia is an ovate immersion in femoral heads, only slightly below its center.

The femoral head damage is rare, but may occur in the case of hip dislocation. There are four classifications of the femoral head. Type One is below Fovea, type two occurs above Fovea, type three is anywhere on the head with an associated fracture in the throat and type four is a fracture at any point on the head with an associated acetabular fracture. Usually it requires relatively extreme trauma to cause such damage and require surgery. The interruption of one of the main arteries can cause avascular necrosis in which the cells begin to die due to lack of blood supply. This is a serious complication and may require the hip.