How does the hip joint work?

The hip joint is a ball-in-socket joint, also known as an enarthrosis. The rounded head of the femur forms a ball, which then fits into the socket of the hip, which is called the acetabulum.

The hip forms the primary connection between the bones of the body's lower limbs and the body's axial skeleton of the trunk and pelvis.

The ilium, the ischium and the pubis - which are three pelvic bones - come together to form the acetabulum.

The joint may not be fully hardened (ossified) into bone until a person reaches the age of about 25, which is why it is important to detect and treat hip dysplasia early.

Both surfaces of the joint are covered by a strong, lubricated layer of articular, hyaline cartilage, which helps it move more smoothly. A rim that is called the labrum grips the head of the femur and secure it into the joint, which increases the depth of the acetabulum.

Continue Learning about Functions of Joints

Why is there a bump on the inside of the elbow?
National Athletic Trainers' AssociationNational Athletic Trainers' Association
The bump on the inside of your elbow, which is called the medial epicondyle, is the anchor point...
More Answers
How does my knee joint work?
Los Robles Hospital & Medical CenterLos Robles Hospital & Medical Center
Anatomically, the knee joint is considered two separate joints. The first joint is between the femur...
More Answers
What are spinal joints?
Gerald M. SilvermanGerald M. Silverman
Located in the rear and slightly to the sides of each vertebra, there are two top and two bottom...
More Answers
What are synovial plica?
National Athletic Trainers' AssociationNational Athletic Trainers' Association
Synovial plica are folds within the fibrous membrane that eventually dissolve into the joint cap...
More Answers

Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.