Human Anatomy: Hip vs Glenohumeral Joint

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What anatomical feature primarily contributes to the stability of the hip joint?

The shallow nature of the acetabulum

The round shape of the femur head

The fibrocartilaginous acetabular labrum (correct)

The ligaments surrounding the glenohumeral joint

How does the mobility of the hip joint compare to that of the glenohumeral joint?

It is more mobile than the glenohumeral joint.

It is equally as mobile as the glenohumeral joint.

It is less mobile than the glenohumeral joint. (correct)

Its mobility cannot be determined.

What is the primary reason for the hip joint's increased stability compared to the glenohumeral joint?

It is located further from the body's center of gravity.

It has a deeper bony architecture. (correct)

It allows for more rotational movement.

It supports weight with less surface area.

Which statement accurately describes the relationship of the hip joint to body weight?

The hip joint supports body weight, necessitating increased stability. (C) Signup and view all the answers

What is a key structural difference between the hip joint and the glenohumeral joint?

The acetabulum in the hip joint is deeper and more concave. (C) Signup and view all the answers

What is the primary role of the ligamentum teres in the hip joint?

It supplies blood to the head of the femur. (D) Signup and view all the answers

Which of the following movements is NOT associated with the hip joint?

Elevation (A) Signup and view all the answers

A fracture of the femoral neck could potentially result in which of the following outcomes?

Lateral rotation of the leg. (D) Signup and view all the answers

Which characteristic is most associated with the structural stability of the hip joint?

Deep bony socket (A) Signup and view all the answers

What distinguishes intertrochanteric fractures from subcapital fractures of the femoral neck?

The part of the femoral neck that is fractured. (B) Signup and view all the answers

Which characteristic describes the primary function of the knee joint?

It is primarily a hinge joint but allows for some rotation. (A) Signup and view all the answers

Which two joints form the knee joint complex?

Tibiofemoral and Patiellofemoral joints. (D) Signup and view all the answers

What is the largest diarthrosis joint in the human body?

Knee joint (B) Signup and view all the answers

Which ligament is NOT involved in the structure of the knee joint?

Sacroiliac ligament (B) Signup and view all the answers

During flexion, what additional movement can the knee joint perform?

Slight rotation and lateral gliding (B) Signup and view all the answers

Which muscle heads are identified in the structure of the knee joint?

Gastrocnemius (D) Signup and view all the answers

Which component is NOT part of the articular capsule surrounding the knee joint?

Radial ligament (B) Signup and view all the answers

What is the primary function of the articular capsule in the hip joint?

To provide stability and prevent the femoral head from dislocating (A) Signup and view all the answers

Which of the following ligaments is primarily responsible for reinforcing the anterior region of the hip joint?

Iliofemoral ligament (D) Signup and view all the answers

When the hip joint is in the extended position, which of the following statements is true regarding its stability?

Ligaments become taut, increasing joint stability (D) Signup and view all the answers

What role do the retinacular fibers play in the hip joint?

They provide additional stability and blood supply (B) Signup and view all the answers

Which statement accurately describes the ligamentum teres in relation to the hip joint?

It connects the femoral head to the acetabulum (A) Signup and view all the answers

What best describes the coverage of the knee joint by the articular capsule?

It encloses only the medial, lateral, and posterior regions. (C) Signup and view all the answers

What role do the collateral ligaments serve in the knee joint?

They provide stability and prevent hyperabduction. (C) Signup and view all the answers

Which ligament is responsible for preventing hyperabduction of the leg at the knee joint?

Tibial collateral ligament (B), Fibular collateral ligament (D) Signup and view all the answers

What is the primary function of the menisci in the knee joint?

To stabilize the knee joint and distribute weight. (C) Signup and view all the answers

How does the tibial collateral ligament relate to the medial meniscus?

It is attached to the medial meniscus. (C) Signup and view all the answers

In terms of anatomical structure, where is the patella located concerning the quadriceps femoris muscle tendon?

It is embedded within the tendon. (A) Signup and view all the answers

What distinguishes the fibular collateral ligament from the tibial collateral ligament?

The fibular collateral ligament reinforces the lateral surface only. (A) Signup and view all the answers

Which of the following statements is true regarding the capsule surrounding the knee joint?

It does not cover the anterior surface of the knee joint. (D) Signup and view all the answers

What primary function does the Anterior Cruciate Ligament (ACL) serve in the knee joint?

Prevents anterior movement of the tibia (A), Prevents hyperextension of the leg (B) Signup and view all the answers

Which statement accurately describes the Posterior Cruciate Ligament (PCL)?

Prevents posterior displacement of the tibia (B) Signup and view all the answers

How does bipedal locomotion affect the positioning of the ACL at full extension of the knee?

The ACL is pulled tight and aids in stability (A) Signup and view all the answers

Which muscle is responsible for unlocking the knee joint during flexion?

Popliteus (D) Signup and view all the answers

In what position does the PCL primarily prevent hyperflexion of the leg?

When the knee is completely flexed (C) Signup and view all the answers

What role does the menisci play during bipedal locomotion?

Absorbs shock and distributes load (A) Signup and view all the answers

Which of the following best describes the orientation of the cruciate ligaments in the knee joint?

They cross each other in an X shape (A) Signup and view all the answers

What might be a misconception about the term 'locking the knee'?

It only refers to the knee being unable to bend (C) Signup and view all the answers

Which action is primarily prevented by the Anterior Cruciate Ligament (ACL) when the knee is extended?

Hyperextension of the leg (C) Signup and view all the answers