Which two bones form the ball and socket joint of the hip?

• A. Femur and Pelvis
• B. Tibia and Fibula
• C. Humerus and Scapula
• D. Radius and Ulna

Answer: (A)

Verified step by step guidance

1. Understand the structure of a ball and socket joint: It is a type of synovial joint where a spherical bone head fits into a rounded cavity of another bone, allowing for multi-directional movement and rotation.
2. Identify the location of the hip joint: The hip joint is located where the leg meets the pelvis, allowing for a wide range of motion in the lower limb.
3. Recognize the bones involved in the hip joint: The femur, which is the thigh bone, has a rounded head that fits into the acetabulum, a socket in the pelvis.
4. Differentiate between the options: The tibia and fibula are bones of the lower leg, the humerus and scapula form the shoulder joint, and the radius and ulna are bones of the forearm.
5. Conclude that the femur and pelvis form the ball and socket joint of the hip, as the femur's head fits into the acetabulum of the pelvis.