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Introduction to Hip Joint Biomechanics

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Questions and Answers

What is the main role of the hip joint in daily activities?

Supporting the weight of the arms

Bending, sitting, walking, and climbing (correct)

Flexion and extension of the knee joint

Stabilizing the trunk

Which angle describes how much the acetabulum covers the femoral head in a healthy hip?

90 degrees

25-40 degrees (correct)

200-300 degrees

50 degrees

What is the purpose of the labrum on the acetabular face?

Provide lubrication to the joint

Increase friction in the joint

Reduce range of motion

Increase surface area and stability of the joint (correct)

Which ligament is the strongest and reinforces the joint capsule of the hip?

Iliofemoral ligament Signup and view all the answers

What happens if there is a damaged capsule in the hip joint?

Vascularization problem of head and neck Signup and view all the answers

What is the role of the femoral neck in relation to the femoral head and shaft?

Provides a lever arm for hip muscles Signup and view all the answers

In a healthy hip, what is the normal range of anteversion angle of the femur?

15-20 degrees Signup and view all the answers

What is the primary function of the acetabulum in the hip joint?

Provides a concave joint surface Signup and view all the answers

What is the rotational angle between the femoral neck and shaft while in the horizontal plane called?

Declination angle (Torsion) Signup and view all the answers

Which trabecular systems are organized to resist high forces within the femoral head?

Medial compressive system and lateral tensile system Signup and view all the answers