CCEP Peripheral Nerve Entrapments & Neurological Conditions 3

Question 1

Which clinical finding best differentiates pronator teres syndrome from carpal tunnel syndrome?

Accepted Answer

Symptom reproduction with resisted forearm pronation

Answer

Weakness of the thenar muscles

Answer

Paresthesia in the median nerve distribution

Answer

Positive Phalen's test

Question 2

The sural nerve is typically formed by contributions from which two nerves?

Accepted Answer

Tibial and common peroneal nerves

Answer

Femoral and obturator nerves

Answer

Saphenous and deep peroneal nerves

Answer

Sciatic and femoral nerves

Question 3

Wartenberg's syndrome (cheiralgia paresthetica) involves entrapment of which nerve at the distal forearm?

Accepted Answer

Superficial radial nerve

Answer

Anterior interosseous nerve

Answer

Posterior interosseous nerve

Answer

Lateral antebrachial cutaneous nerve

Question 4

Posterior interosseous nerve (PIN) syndrome produces which characteristic clinical finding?

Accepted Answer

Inability to extend the fingers and thumb with preserved wrist extension

Answer

Complete wrist drop with loss of wrist extension

Answer

Thenar atrophy and thumb opposition weakness

Answer

Sensory loss over the entire dorsum of the hand

Question 5

Obturator nerve entrapment in athletes most commonly presents as:

Accepted Answer

Medial thigh pain worsening with exercise and adductor weakness

Answer

Anterior thigh pain and quadriceps weakness

Answer

Lateral thigh paresthesia and hip abductor weakness

Answer

Posterior thigh pain and hamstring weakness

Question 6

The saphenous nerve, which can be entrapped at the adductor canal, is the largest cutaneous branch of which nerve?

Accepted Answer

Femoral nerve

Answer

Obturator nerve

Answer

Sciatic nerve

Answer

Common peroneal nerve

Question 7

In the most common anatomical variant of piriformis syndrome, the sciatic nerve is compressed at which anatomical relationship to the piriformis muscle?

Accepted Answer

Below the piriformis through the infrapiriform foramen

Answer

Above the piriformis through the suprapiriform foramen

Answer

Through the belly of the piriformis

Answer

Medial to the piriformis at the greater sciatic foramen