Can You Identify the Ischium Bone?

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Questions and Answers

What is the ischium divided into?

A body and a ramus (correct)

An ilium and a pubis

A greater and lesser sciatic notch

A posterior and anterior acetabulum

What is the landmark called that is near the junction of the lower body and the inferior rami of the ischium?

Tuberosity of the ischium (correct)

Tuberosity of the ilium

Tuberosity of the pubis

Tuberosity of the femur

What is the bony projection posterior to the acetabulum called?

Ischial spine (correct)

Iliac crest

Greater trochanter

Pubic symphysis

What is the largest foramen in the human skeletal system called?

Obturator foramen Signup and view all the answers

Which landmark is commonly used to check for rotation of the pelvis and/or lower abdomen?

ASIS Signup and view all the answers

What is the joint formed by the two superior rami of the pubis called?

Symphysis pubis Signup and view all the answers

What is the most superior aspect of the ilium that is easily palpated?

Iliac crest Signup and view all the answers

What is the distance between the femoral head and neck when using the midpoint method for locating them?

1.5 inches Signup and view all the answers

What is the suggested method for locating the femoral head or neck that uses only the ASIS?

Palpation of the ASIS Signup and view all the answers

What is the level of the symphysis pubis in relation to the level of the ASIS?

3 to 4 inches inferior Signup and view all the answers

What is the typical physical sign of a femoral neck fracture?

External rotation of the involved foot Signup and view all the answers

What is the effect of internally rotating the entire lower limb during imaging?

The femoral head and neck are positioned in a true AP projection Signup and view all the answers

What is the minimum SID for an AP projection of the femur?

40 inches Signup and view all the answers

What is the recommended internal leg rotation for a true AP projection of the femur?

5° Signup and view all the answers

What is the recommended collimation for an AP projection of the femur?

Collimate closely on both sides to femur with end collimation to film borders Signup and view all the answers

What should be included on the IR for an AP projection of the femur?

The femur and the knee joint Signup and view all the answers

What should be the position of the femur and tibial condyles in an AP projection of the femur?

Symmetrical in size and shape Signup and view all the answers

Study Notes

Pelvis and Femur Anatomy

The ischium is divided into a body and rami (superior and inferior).
The landmark near the junction of the lower body and the inferior rami of the ischium is called the ischial tuberosity.
The bony projection posterior to the acetabulum is called the ischial spine.
The largest foramen in the human skeletal system is called the obturator foramen.

Pelvis Alignment and Measurement

The landmark used to check for rotation of the pelvis and/or lower abdomen is the anterior superior iliac spine (ASIS).
The joint formed by the two superior rami of the pubis is called the pubic symphysis.
The most superior aspect of the ilium that is easily palpated is the iliac crest.

Femur Measurement and Imaging

When using the midpoint method, the distance between the femoral head and neck is approximately 1.5-2 cm.
The suggested method for locating the femoral head or neck using only the ASIS is by drawing an imaginary line from the ASIS to the femoral head.
The level of the symphysis pubis is at or slightly below the level of the ASIS.
A typical physical sign of a femoral neck fracture is shortening of the affected limb.

Imaging Techniques and Protocol

Internally rotating the entire lower limb during imaging can facilitate a true AP projection of the femur.
The minimum source-to-image distance (SID) for an AP projection of the femur is 100 cm (40 inches).
The recommended internal leg rotation for a true AP projection of the femur is 15-20°.
The recommended collimation for an AP projection of the femur is to center on the femur, with lateral edges at the greater trochanter.
The image receptor (IR) for an AP projection of the femur should include the entire femur, from the femoral head to the upper tibia.
In an AP projection of the femur, the femur and tibial condyles should be parallel to each other and to the image receptor.

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Description

"Test Your Anatomy Knowledge: Can You Identify the Ischium Bone?" Challenge yourself with this quiz and see if you can correctly identify the ischium bone and its key features. From its location to its structure, this quiz will test your understanding of this important bone in the hip. Perfect for anatomy students or anyone looking to expand their knowledge of the human body.