**Core Concept**
The assessment of nerve function after injury involves evaluating the recovery of motor and sensory function, as well as the regeneration of nerve fibers. This process is critical for determining the extent of nerve damage and guiding rehabilitation efforts.

**Why the Correct Answer is Right**
The correct assessment of nerve function involves several key components, including the Tinel's sign, Hoffmann's reflex, and two-point discrimination. Tinel's sign is a clinical sign that indicates nerve regeneration, characterized by a tingling sensation when the affected area is lightly tapped. Hoffmann's reflex is a reflex that can be used to assess the integrity of the upper motor neuron pathway. Two-point discrimination is a test used to evaluate the precision of tactile sensation. These assessments are crucial for determining the extent of nerve damage and guiding rehabilitation efforts.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is not relevant to the assessment of nerve function after injury.

**Option B:** This option may be confusing as it is a type of imaging study, but it is not the primary method for assessing nerve function.

**Option C:** Electromyography (EMG) is a diagnostic tool used to evaluate the electrical activity of muscles, but it is not the primary method for assessing nerve function after injury.

**Clinical Pearl / High-Yield Fact**
A key clinical pearl in assessing nerve function after injury is the use of Tinel's sign, which can indicate nerve regeneration and guide rehabilitation efforts.

**Correct Answer: D. Tinel's sign, Hoffmann's reflex, and two-point discrimination.**