Carpal Tunnel

Question 1

What are the borders of the carpal tunnel?

Answer 1

• Superficial
  
  • Flexor retinaculum
    
    • Thick CT
• Deep
  
  • Carpal Arch
    
    • ​Laterally: scaphoid, trapezium
    • Medially: Hook of hammate, pisiform

Question 2

What is contained within the carpal tunnel?

Answer 2

• 9 tendons
  
  • 4 tendons- flexor digitorum superficialis
  • 4 tendons- flexor digitorum profundus
  • 1 tendons- flexor pollicis longus
• Median nerve
  
  • (palmar cutaneous branch given off prior to carpal tunnel)

Question 3

What 2 branches does the median nerve divide into once it passes through the carpal tunnel?

Answer 3