Anatomy of the Femur Bone

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Questions and Answers

What is the femur's role in the body?

  • It is the primary bone supporting the knee joint
  • It provides structural support for the calf muscles
  • It is the only bone in the thigh and the longest bone in the body (correct)
  • It connects the pelvis to the lower leg bones

Where does the head of the femur articulate?

  • With the patella to facilitate knee movement
  • With the acetabulum of the pelvis to form the hip joint (correct)
  • With the tibia to form the knee joint
  • With the ischium to support body weight

What attaches to the greater trochanter of the femur?

  • Quadriceps femoris muscles
  • Adductor magnus muscle
  • Hamstring muscles
  • Gluteus medius, gluteus minimus, and piriformis muscles (correct)

What is the function of the neck of the femur?

<p>Connects the head of the femur with the shaft and allows for increased range of movement at the hip joint (B)</p> Signup and view all the answers

Which bony processes are found in the proximal aspect of the femur?

<p>Greater and lesser trochanters (B)</p> Signup and view all the answers

What is the angle of projection of the neck of the femur to the shaft?

<p>Approximately 135 degrees (C)</p> Signup and view all the answers

Which muscles originate from the greater trochanter of the femur?

<p>Gluteus medius, gluteus minimus, and piriformis (D)</p> Signup and view all the answers

What can occur as a result of forceful contraction of the gluteus medius at the greater trochanter?

<p>An avulsion fracture (A)</p> Signup and view all the answers

Where does the head of the femur articulate to form a joint?

<p>Acetabulum of the pelvis (A)</p> Signup and view all the answers

Flashcards

Role of the Femur

The only bone in the thigh, and the longest bone in the body.

Femoral Head Articulation

With the acetabulum of the pelvis.

Greater Trochanter Attachments

Gluteus medius, gluteus minimus, and piriformis muscles attach here.

Function of Femoral Neck

Connects the head of the femur with the shaft, allowing increased range of motion at the hip joint.

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Proximal Femur Processes

Greater and lesser trochanters.

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Femoral Neck Angle

Approximately 135 degrees.

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Origin Muscles: Greater Trochanter

Gluteus medius, gluteus minimus, and piriformis.

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Forceful Gluteus Medius Contraction

An avulsion fracture.

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Head of Femur Articulation

Acetabulum of the pelvis.

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Study Notes

Femur Overview

  • The femur is the longest, strongest, and heaviest bone in the human body.

Femur Anatomy

  • The head of the femur articulates at the acetabulum of the pelvis.
  • The greater trochanter of the femur is the site of attachment for the gluteus medius, gluteus minimus, and iliotibial tract muscles.
  • The neck of the femur is a narrow, cone-shaped region that connects the head to the shaft, providing a wide range of motion.

Femur Structure

  • The proximal aspect of the femur has three bony processes: the greater trochanter, lesser trochanter, and head.
  • The neck of the femur projects at an angle of approximately 125° to the shaft.

Muscular Attachments

  • The gluteus medius, gluteus minimus, and iliotibial tract muscles originate from the greater trochanter of the femur.
  • Forceful contraction of the gluteus medius at the greater trochanter can cause the femur to rotate laterally.

Joint Formation

  • The head of the femur articulates with the acetabulum of the pelvis to form the hip joint.

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