Intermediate Extensor Digiti Minimi Quiz

Q1. Through which dorsal extensor compartment does the tendon of extensor digiti minimi pass at the wrist?

• Second compartment
• Sixth compartment
• Fifth compartment
• Third compartment

Q2. Which structure forms the roof over the extensor digiti minimi tendon at the dorsal wrist?

• Flexor retinaculum
• Palmar aponeurosis
• Extensor retinaculum
• Bicipital aponeurosis

Q3. Which tendon provides an additional extensor contribution to the little finger alongside extensor digiti minimi?

• Extensor pollicis longus tendon
• Flexor carpi ulnaris tendon
• Extensor digitorum tendon to the fifth digit
• Flexor digitorum profundus tendon to the fifth digit

Q4. Which joint of the little finger is most directly extended by the pull of extensor digiti minimi before force is distributed through the extensor expansion?

• First carpometacarpal joint
• Wrist joint only
• Metacarpophalangeal joint
• Distal radioulnar joint

Q5. How does extensor digiti minimi contribute to extension of the interphalangeal joints of the little finger?

• Through the palmar aponeurosis
• Through the extensor expansion
• Through the carpal tunnel
• Through the flexor retinaculum

Q6. Which spinal nerve roots are commonly associated with the motor supply of extensor digiti minimi?

• C5 only
• C3 and C4
• T1 and T2 only
• C7 and C8

Q7. Which muscle lies immediately radial to extensor digiti minimi in the superficial posterior forearm?

• Pronator teres
• Extensor digitorum
• Flexor carpi ulnaris
• Flexor digitorum superficialis

Q8. Which muscle lies immediately ulnar to extensor digiti minimi in the superficial posterior forearm?

• Brachioradialis
• Flexor carpi radialis
• Extensor carpi ulnaris
• Extensor carpi radialis longus

Q9. How can extensor digiti minimi function be assessed clinically?

• Resisted flexion of the little finger
• Resisted thumb opposition
• Resisted extension of the little finger
• Resisted forearm pronation

Q10. What distinguishes extensor digiti minimi functionally from extensor digitorum?

• It provides specialized extension of the fifth digit
• It flexes all four medial digits
• It exclusively extends the thumb
• It produces forearm supination without acting on the fingers