Falling on an Outstretched Hand

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Questions and Answers

Which bone is the most frequently fractured carpal bone in the upper limb?

  • Radius
  • Humerus
  • Clavicle
  • Scaphoid (correct)

What is the mechanism of fracture in Colles' fracture?

  • The force drives the distal fragment posteriorly and superiorly. (correct)
  • The force drives the proximal fragment posteriorly and superiorly.
  • The force drives the distal fragment anteriorly and inferiorly.
  • The force drives the proximal fragment anteriorly and inferiorly.

Which structures are commonly injured in Colles' fracture?

  • Long flexor tendons and long extensor tendons (correct)
  • Flexor retinaculum and long extensor tendons
  • Long flexor tendons
  • Long extensor tendons

Which nerve is commonly injured in a fracture of the medial epicondyle of the humerus?

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

What is the most commonly fractured bone in the body?

<p>Clavicle (D)</p> Signup and view all the answers

Which nerve is commonly injured in a fracture of the surgical neck of the humerus?

<p>Axillary nerve (C)</p> Signup and view all the answers

Which muscle is responsible for tilting the medial fragment of a fractured clavicle upward?

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

Which of the following is a symptom of radial nerve injury?

<p>Loss of the opposition of the thumb (C)</p> Signup and view all the answers

What is the most likely diagnosis for a 2-year-old boy who refuses to move his right arm after being lifted up by the arms?

<p>Supracondylar fracture of the humerus (A)</p> Signup and view all the answers

What is the most common cause of injury to the radial nerve?

<p>Injury to the spiral groove (D)</p> Signup and view all the answers

What is the deformity associated with radial nerve injury?

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

Which nerve is commonly injured in a fracture of the distal end of the humerus?

<p>Ulnar nerve (D)</p> Signup and view all the answers

Which artery is commonly injured in a fracture of the supracondylar region of the humerus?

<p>Inferior ulnar collateral artery (D)</p> Signup and view all the answers

Which nerve is commonly injured in a fracture of the surgical neck of the humerus?

<p>Axillary nerve (C)</p> Signup and view all the answers

What is the most commonly fractured bone in the body?

<p>Clavicle (C)</p> Signup and view all the answers

Which of the following is a common injury associated with a fall on an outstretched hand with extended wrist?

<p>Fracture of the distal end of the humerus (B)</p> Signup and view all the answers

Which structure is commonly injured in a fracture of the scaphoid bone?

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

What deformity is associated with a Colles' fracture?

<p>Dinnerfork deformity (D)</p> Signup and view all the answers

Which of the following is a symptom of radial nerve injury?

<p>Weakness of the flexion of the fingers (D)</p> Signup and view all the answers

What is the deformity associated with radial nerve injury?

<p>Wrist drop (D)</p> Signup and view all the answers

What is the most likely diagnosis for a 2-year-old boy who refuses to move his right arm after being lifted up by the arms?

<p>Supracondylar fracture of the humerus (B)</p> Signup and view all the answers

Which nerve is commonly injured in a fracture mid-shaft of the humerus?

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

Which bone is commonly fractured in a fall on an outstretched hand with extended wrist?

<p>Scaphoid (C)</p> Signup and view all the answers

Which structure is commonly injured in a fracture of the distal end of the radius?

<p>Long flexor tendons (C)</p> Signup and view all the answers

Which joint is commonly dislocated in a fall on an outstretched hand with extended wrist?

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

Which of the following is a common cause of injury to the radial nerve?

<p>Intramuscular injection in the triceps brachii (A)</p> Signup and view all the answers

What is the most likely diagnosis for a 2-year-old boy who refuses to move his right arm after being lifted up by the arms?

<p>Supracondylar fracture of the humerus (A)</p> Signup and view all the answers

Which of the following is a symptom of radial nerve injury?

<p>Weakness of flexion of the wrist (C)</p> Signup and view all the answers

What deformity is associated with radial nerve injury?

<p>Wrist drop (C)</p> Signup and view all the answers

Which nerve is commonly injured in a fracture of the supracondylar region of the humerus?

<p>Ulnar nerve (D)</p> Signup and view all the answers

What is the most common cause of injury to the median nerve at the elbow?

<p>Pronator teres syndrome (B)</p> Signup and view all the answers

Which artery is commonly injured in a fracture of the distal end of the humerus?

<p>Inferior ulnar collateral artery (A)</p> Signup and view all the answers

Which muscle is responsible for tilting the medial fragment of a fractured clavicle upward?

<p>Sternocleidomastoid muscle (C)</p> Signup and view all the answers

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