**Core Concept**
Volkman's ischemic contracture is a rare but severe condition resulting from prolonged compression of the forearm, leading to ischemia and subsequent muscle and nerve damage. It occurs due to entrapment of the forearm in a tight cast or splint, which compromises blood flow and leads to nerve and muscle injury.

**Why the Correct Answer is Right**
The median nerve is the most commonly affected nerve in Volkman's ischemic contracture due to its anatomical location in the forearm. The median nerve runs through the carpal tunnel and then down the forearm, where it is susceptible to compression and ischemia. This compression leads to damage to the nerve and surrounding muscles, resulting in contracture of the forearm muscles. The median nerve's close proximity to the deep structures of the forearm makes it particularly vulnerable to injury in this condition.

**Why Each Wrong Option is Incorrect**
* **Option A:** The ulnar nerve is also at risk for injury in Volkman's contracture, but it is not the most commonly affected nerve.
* **Option B:** The radial nerve is not typically involved in Volkman's contracture, as it is located more superficially in the forearm.
* **Option D:** The interosseous nerve is a branch of the median nerve and is not typically the primary nerve involved in Volkman's contracture.

**Clinical Pearl / High-Yield Fact**
It is essential to recognize the signs of Volkman's ischemic contracture early, as prompt intervention can prevent long-term damage and improve outcomes. Clinical suspicion should be high in patients with a history of prolonged casting or splinting, particularly if they present with pain, paresthesias, or decreased sensation in the hand.

**Correct Answer:** C.