Intermediate Carpal Tunnel Quiz

Q1. Which carpal landmarks provide the lateral attachments of the flexor retinaculum?

• Triquetrum and trapezoid
• Lunate and capitate
• Scaphoid tubercle and trapezium
• Pisiform and hook of hamate

Q2. Which carpal landmarks provide the medial attachments of the flexor retinaculum?

• Pisiform and hook of hamate
• Lunate and capitate
• Scaphoid and trapezium
• Trapezoid and hamate body

Q3. Which tendons within the carpal tunnel are enclosed primarily by the common flexor synovial sheath, or ulnar bursa?

• Flexor digitorum superficialis and flexor digitorum profundus tendons
• Flexor pollicis longus and flexor carpi radialis tendons
• Extensor digitorum and extensor indicis tendons
• Flexor carpi ulnaris and palmaris longus tendons

Q4. Which tendon within the carpal tunnel has its own synovial sheath, commonly called the radial bursa?

• Extensor pollicis longus
• Palmaris longus
• Flexor pollicis longus
• Flexor carpi ulnaris

Q5. What is the relationship of the palmaris longus tendon to the flexor retinaculum?

• It passes superficial to the flexor retinaculum
• It passes through the carpal tunnel with the median nerve
• It passes deep to all carpal bones
• It passes through Guyon's canal with the ulnar nerve

Q6. What is the relationship of the flexor carpi radialis tendon to the carpal tunnel?

• It passes through the carpal tunnel beside the median nerve
• It passes dorsal to the extensor retinaculum
• It passes through a separate compartment and is not a content of the carpal tunnel proper
• It passes through Guyon's canal

Q7. Which nerve and artery pass through Guyon's canal superficial to the flexor retinaculum?

• Radial nerve and ulnar artery
• Ulnar nerve and ulnar artery
• Median nerve and radial artery
• Median nerve and ulnar artery

Q8. Which branch of the median nerve usually arises proximal to the flexor retinaculum and travels superficial to it?

• Recurrent branch
• Anterior interosseous nerve
• Palmar cutaneous branch
• Posterior interosseous nerve

Q9. Why can sensation over the central thenar eminence be preserved in carpal tunnel syndrome?

• The ulnar nerve travels through the carpal tunnel and supplies the thenar skin
• The palmar cutaneous branch passes superficial to the flexor retinaculum
• The median nerve carries no cutaneous fibers at the wrist
• The thenar skin is supplied exclusively by the radial nerve

Q10. Which structural arrangement converts the anterior concavity of the carpus into the carpal tunnel?

• The palmar aponeurosis joining the metacarpals
• The flexor retinaculum bridging the carpal arch
• The interosseous membrane joining the carpal bones
• The extensor retinaculum bridging the distal radius