**Core Concept**
Continuous epidural anaesthesia involves the continuous infusion of local anaesthetics or opioids into the epidural space surrounding the spinal cord to provide regional anaesthesia. This technique allows for the maintenance of a stable level of anaesthesia for an extended period, often used in postoperative pain management.

**Why the Correct Answer is Right**
Continuous epidural anaesthesia is used to provide analgesia for postoperative pain management, particularly in major surgeries such as lower limb orthopedic procedures, abdominal surgeries, and thoracic surgeries. The epidural space is accessed through an epidural catheter, which is inserted into the epidural space through a midline approach at the lumbar level (L2-L5). The local anaesthetics or opioids are then infused through the catheter, providing a stable and controlled level of anaesthesia.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because continuous epidural anaesthesia is not typically used for minor surgical procedures, such as minor orthopedic procedures or minor outpatient surgeries.
**Option B:** This option is incorrect because general anaesthesia is not a type of regional anaesthesia, and it is not typically used for postoperative pain management.
**Option C:** This option is incorrect because spinal anaesthesia is a different type of regional anaesthesia that involves the injection of local anaesthetics into the subarachnoid space surrounding the spinal cord, rather than the epidural space.

**Clinical Pearl / High-Yield Fact**
It is essential to monitor the patient's vital signs, particularly the blood pressure, during continuous epidural anaesthesia to prevent hypotension and ensure adequate perfusion of vital organs.

**Correct Answer:** C.