The femoral head is the rounded top part of the femur, which is the long bone in your thigh. It fits into the acetabulum, a cup-shaped socket in the pelvis, forming the hip joint. This joint allows for a wide range of movement, making activities like walking, running, and dancing possible. The femoral head is covered with smooth cartilage, which helps reduce friction and absorb shock during movement. If the femoral head is damaged due to injury or conditions like arthritis, it can lead to pain and limited mobility, making treatment important for maintaining an active lifestyle.