Shoulder Anatomy Quiz
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Questions and Answers

What is the location of the lesser tubercle on the humerus?

  • Posteriorly
  • Laterally
  • Medially
  • Anteriorly (correct)

Which part of the clavicle articulates with the acromion of the scapula?

  • Sternal extremity
  • Inferior edge
  • Clavicle body
  • Acromial extremity (correct)

Which statement is NOT true regarding the shoulder girdle?

  • It consists of the clavicle and scapula.
  • It has a complete posterior connection to the trunk. (correct)
  • It connects to the trunk anteriorly at the upper sternum.
  • It connects at the shoulder joint between the scapula and the humerus.

What is the correct order of the parts of the clavicle from lateral to medial?

<p>Acromial extremity, body, sternal extremity (B)</p> Signup and view all the answers

At what rib level does the lower margin of the scapula typically align?

<p>Seventh rib (T7) (D)</p> Signup and view all the answers

What is the primary function of the greater tubercle of the humerus?

<p>To provide a surface for muscle attachment, specifically for rotator cuff muscles (C)</p> Signup and view all the answers

Which part of the humerus is most likely to be fractured in a surgical neck fracture?

<p>The surgical neck (A)</p> Signup and view all the answers

What effect does external rotation have on the positioning of the humerus in an AP view?

<p>It alters the alignment of the greater and lesser tubercles for better visualization (B)</p> Signup and view all the answers

What is the significance of the intertubercular sulcus (bicipital groove) in the anatomy of the humerus?

<p>It serves as a pathway for the biceps tendon (C)</p> Signup and view all the answers

Which feature of the proximal humerus is characterized as the 'most proximal part'?

<p>Head (A)</p> Signup and view all the answers

What is the function of the glenoid cavity in the scapula?

<p>It forms a joint with the humeral head. (D)</p> Signup and view all the answers

Which edge of the scapula is closest to the vertebral column?

<p>Medial (vertebral) border (D)</p> Signup and view all the answers

What structure extends laterally over the humeral head from the spine of the scapula?

<p>Acromion (B)</p> Signup and view all the answers

Which part of the scapula is described as being the thickest?

<p>Lateral angle (head) (C)</p> Signup and view all the answers

Which surface of the scapula features a cavity known as the subscapular fossa?

<p>Anterior (costal) surface (C)</p> Signup and view all the answers

Which angle of the scapula is located at the upper end of the medial border?

<p>Superior angle (B)</p> Signup and view all the answers

What is the primary role of the suprascapular notch in the scapula?

<p>To allow passage of nerves and blood vessels (B)</p> Signup and view all the answers

What characterizes the lateral (axillary) border of the scapula?

<p>It is thicker than the medial border. (A)</p> Signup and view all the answers

What adjustment should be made to exposure technique for pediatric patients compared to adults?

<p>Decrease the exposure time (D)</p> Signup and view all the answers

Why is patient immobilization particularly important in pediatric radiography?

<p>Children tend to move more during examinations (B)</p> Signup and view all the answers

What type of filter is recommended for imaging the shoulder in bariatric patients?

<p>Boomerang compensating filter (C)</p> Signup and view all the answers

What is the primary reason for altering routine examinations for geriatric patients?

<p>Physical limitations or conditions (C)</p> Signup and view all the answers

What is one key guideline for digital imaging systems?

<p>Ensure close collimation to reduce scatter (C)</p> Signup and view all the answers

What should be communicated to older patients to ensure successful imaging?

<p>Clear and complete instructions are essential (A)</p> Signup and view all the answers

When imaging the proximal humerus area digitally, what should be employed despite the increased patient dose?

<p>A grid to improve image clarity (D)</p> Signup and view all the answers

Where should shoulder projections be palpated for bariatric patients?

<p>Jugular notch and AC joint (D)</p> Signup and view all the answers

Flashcards

Humerus

The longest bone in the upper limb, about one-fifth of the body's height in adults.

Greater Tubercle

A larger, lateral (outside) bony bump on the proximal humerus.

Surgical Neck

A narrow area on the humerus below the tubercles, prone to fractures.

Intertubercular Sulcus

The groove between the greater and lesser tubercles where the biceps tendon runs.

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Anatomic Neck

The narrow area just below the humeral head, separating it from the tubercles.

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Humerus Tubercles

The greater and lesser tubercles are landmarks on the proximal humerus, crucial for proper radiographic positioning.

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Clavicle Structure

The collarbone (clavicle) consists of three parts: acromial extremity, sternal extremity, and the body (shaft). These parts articulate at joints.

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Shoulder Girdle Connection

The shoulder girdle (clavicle and scapula) connects the upper limb to the trunk, primarily anteriorly to the sternum, but posteriorly connected by muscles.

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Clavicle Parts

The clavicle has an acromial extremity (connecting to the scapula) and a sternal extremity (connecting to the sternum).

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Clavicle Radiograph

An AP radiograph of the clavicle displays three parts, the two articulated joints and the body (shaft).

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Scapula

A flat, triangular bone forming the posterior part of the shoulder girdle, known as the shoulder blade.

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Medial border

The long edge of the scapula closest to the vertebral column.

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Lateral (axillary) border

The edge of the scapula nearest to the armpit.

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Glenoid cavity

A shallow depression on the scapula that articulates with the humerus to form the shoulder joint.

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Acromion

A long, curved process projecting laterally from the scapula, forming the highest point of the shoulder.

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Coracoid process

A thick, beak-like process projecting anteriorly from the scapula.

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Suprascapular notch

A notch on the superior border of the scapula that allows passage of the suprascapular nerve.

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Spine of the scapula

A prominent ridge on the posterior surface of the scapula that divides the supraspinous and infraspinous fossae.

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Pediatric Exposure Technique

Radiographic exposure technique should be decreased for pediatric patients due to reduced tissue density compared to adults.

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Geriatric Reduced Technique

Radiographic technique may need to be reduced for geriatric patients due to potential bone-thinning conditions, such as osteoporosis.

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Bariatric Shoulder Imaging

Alternative palpation points (jugular notch or AC joint) should be used for shoulder projections in bariatric patients due to increased tissue thickness.

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Boomerang Filter for Bariatric Shoulders

Use a boomerang compensating filter for AP shoulder projections in bariatric patients to compensate for uneven tissue thickness.

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Digital Imaging: Collimation

Ensure optimal image quality by closely collimating the beam in digital imaging to reduce scatter radiation reaching the image receptor.

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Digital Imaging: Positioning

Position patients erect whenever possible for comfort and to reduce object-image receptor distance and distortion.

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Digital Imaging: Grid for Proximal Humerus

Always use a grid when imaging the proximal humerus with digital imaging to improve image quality by reducing scatter radiation.

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Digital Imaging: Virtual Grid Option

If your facility uses virtual grid software, a physical grid is not necessary for imaging the proximal humerus.

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