For traumatic paraplegia investigation of choice is:
**Core Concept**
Traumatic paraplegia is a type of spinal cord injury resulting from trauma, leading to damage of the spinal cord and disruption of normal neural function. The investigation of choice should aim to assess the extent of spinal cord damage, identify any associated injuries, and guide management.
**Why the Correct Answer is Right**
Magnetic Resonance Imaging (MRI) is the investigation of choice for traumatic paraplegia due to its high sensitivity and specificity in detecting spinal cord injuries, including hemorrhage, edema, and compression fractures. MRI can also visualize the entire spine, allowing for the identification of associated injuries such as vertebral fractures or disc herniations. Additionally, MRI is non-invasive and does not expose the patient to ionizing radiation.
**Why Each Wrong Option is Incorrect**
**Option A:** Computed Tomography (CT) scan is not the investigation of choice for traumatic paraplegia as it may not detect subtle spinal cord injuries, and its radiation exposure is a concern in young patients.
**Option B:** Plain radiographs are limited in their ability to detect spinal cord injuries and are often normal in the early stages of traumatic paraplegia.
**Option C:** Electromyography (EMG) and nerve conduction studies (NCS) are useful in assessing muscle and nerve function but are not the primary investigation for traumatic paraplegia.
**Clinical Pearl / High-Yield Fact**
In patients with traumatic paraplegia, it is essential to perform a thorough neurological examination, including assessment of sensory and motor function, to identify any associated injuries and guide management.
**Correct Answer:** C. MRI.