Question

Match List I (Clinical Conditions) with List II (Nerves involved) and select the correct answer using the codes given below the lists:

List I (Clinical Conditions)	List II (Nerves involved)
A. Wrist drop	1. Ulnar nerve
B. Winging of Scapula	2. Radial nerve
C. Pointing index	3. Long Thoracic nerve
D. Claw hand	4. Median nerve

Codes:

• A. A-2, B-3, C-4, D-1
• B. A-1, B-4, C-3, D-2
• C. A-2, B-4, C-3, D-1
• D. A-1, B-3, C-4, D-2

Hint:

Radial nerve gives wrist drop, long thoracic nerve gives winging of scapula, median nerve gives a pointing index, ulnar nerve gives a claw hand.

Answer 1

The Correct Option is A

Step 1: Understanding the Question.
We must match four clinical hand and shoulder signs with the nerve responsible for each, then pick the code that lists the pairs correctly.

Step 2: Match wrist drop.
Wrist drop is the inability to extend the wrist and fingers, seen when the radial nerve is damaged (for example, in a mid-shaft humerus fracture or "Saturday night palsy"). So A matches with 2, radial nerve.

Step 3: Match winging of scapula.
Winging of the scapula, where the medial border of the shoulder blade sticks out, happens when the long thoracic nerve is injured, because this nerve supplies serratus anterior, the muscle that holds the scapula flat against the chest wall. So B matches with 3, long thoracic nerve.

Step 4: Match pointing index and claw hand.
Pointing index, where the index finger stays straight while the others try to flex (as in trying to make a fist), points to median nerve damage, since the median nerve supplies the muscles that flex the index and middle fingers. So C matches with 4, median nerve.
Claw hand, with hyperextension at the knuckles and flexion at the finger joints of the ring and little fingers, is caused by ulnar nerve damage, since the ulnar nerve supplies most of the small hand muscles. So D matches with 1, ulnar nerve.

Step 5: Assemble the code.
Putting these together gives A-2, B-3, C-4, D-1, which matches option (a), option 1 in our list.

Step 6: Final Answer.
\[ \boxed{A\text{-}2,\ B\text{-}3,\ C\text{-}4,\ D\text{-}1} \]