**Question:** Volkmann's Ischaemic Contracture is due to

A. Lack of blood supply to the limb
B. Infection
C. Immobilization of the limb
D. Hypothermia

**Core Concept:** Volkmann's Ischaemic Contracture is a serious complication that occurs in cases of profound ischaemia or circulatory arrest in the limb. It is characterized by ischemic damage to the subcutaneous tissues, underlying muscles, and ultimately the bone.

**Why the Correct Answer is Right:** Volkmann's Ischaemic Contracture primarily occurs due to a lack of blood supply to the limb (Option A). When the limb is subjected to profound ischaemia or circulatory arrest, the tissues receive insufficient oxygen and nutrients to maintain cellular function. This leads to tissue necrosis, particularly affecting the subcutaneous tissues, muscles, and bones. As the underlying structures die, they contract, causing a contracture.

**Why Each Wrong Option is Incorrect:**

- Infection (Option B) is a separate complication that can occur in cases of limb ischaemia but is not the primary cause of Volkmann's Ischaemic Contracture. Infection can lead to further tissue damage but does not directly cause the contracture.
- Immobilization (Option C) can lead to muscle atrophy and joint stiffness but does not directly cause ischaemia and the subsequent ischemic damage leading to contracture.
- Hypothermia (Option D) can exacerbate ischaemia but is not the primary cause of Volkmann's Ischaemic Contracture. Hypothermia can impair cardiovascular function, but the underlying mechanism is insufficient blood flow due to ischaemia.

**Clinical Pearl:** Proper evaluation and management of limb ischaemia are crucial to prevent Volkmann's Ischaemic Contracture. Rapid recognition and treatment of limb ischaemia are essential to minimize tissue damage and prevent the development of this serious complication.