Peripheral nerve

Front

A 30-year-old cyclist complains of numbness and tingling in the fourth and fifth fingers, weakness in hand grip, and difficulty performing tasks that require fine motor control, such as typing. Based on the patient's symptoms, which is the most likely diagnosis? Options: Carpal tunnel syndrome, Cubital tunnel syndrome, Pronator teres syndrome, Guyon’s canal syndrome

Back

Guyon’s canal syndrome

Front

A 19-year-old presents with an internally rotated, adducted arm and extended elbow following a fall on the neck and shoulder. What structure is MOST likely affected?

Back

Upper trunk

Front

A patient has weakness in elbow flexion and shoulder abduction, along with numbness over the lateral shoulder and forearm. What is the likely site of injury?

Back

C5 nerve root

Front

An overhead athlete presents with lateral elbow pain, occasional "popping," slight pain distal to the lateral epicondyle, limited elbow extension, and pain with gripping that changes with pronation and supination. Which structure is most likely involved?

Back

Radial head

Front

A 35-year-old rock climber presents with hand weakness and numbness in the medial aspect of the forearm and hand after falling and suddenly catching himself by grabbing a ledge with one arm. On examination, the therapist notes atrophy of the hypothenar eminence and clawing of the 4th and 5th digits. Which part of the brachial plexus is MOST likely injured?

Back

Lower trunk