**Core Concept**
Volkmann's ischemia, a form of compartment syndrome, occurs when increased pressure within a closed osteofascial compartment compromises blood flow, leading to ischemia and potentially permanent nerve and muscle damage. Early recognition and intervention are crucial to prevent long-term sequelae.

**Why the Correct Answer is Right**
Fasciotomy, an emergency surgical procedure, involves incision of the fascia surrounding the affected compartment to relieve pressure and restore blood flow. This intervention can prevent further ischemia and promote healing by allowing muscles to expand and blood vessels to re-establish perfusion. Prompt fasciotomy is the cornerstone of treatment for acute compartment syndrome, including Volkmann's ischemia.

**Why Each Wrong Option is Incorrect**
**Option B:** A cock-up splint is a conservative orthotic device used to maintain wrist extension in cases of wrist drop or radial nerve palsy, but it does not address the underlying pressure increase in compartment syndrome.

**Option C:** Bone shortening, a surgical procedure, is typically reserved for the treatment of limb length discrepancy or deformity, not compartment syndrome.

**Option D:** A turnbuckle splint is a type of orthotic device used to manage conditions like clubfoot, but it does not relieve pressure in compartment syndrome.

**Clinical Pearl / High-Yield Fact**
In patients with suspected compartment syndrome, a "6 Ps" mnemonic can aid in rapid diagnosis: Pain, Pallor, Pulselessness, Paraesthesia, Poikilothermia (coldness), and Paralysis. Prompt recognition of these symptoms and prompt intervention with fasciotomy can significantly improve outcomes.

✓ Correct Answer: A. Fasciotomy