**Core Concept**
The question is testing the understanding of the potential complications of a fall from height, which can involve various injuries to the musculoskeletal, nervous, and other systems.

**Why the Correct Answer is Right**
The least common complication of a fall from height is often determined by the mechanisms of injury and the force exerted on the body. While fractures, head injuries, and spinal cord damage are more common, other complications such as abdominal injuries, genital trauma, and even eye injuries can occur. The force of the impact and the surface landed on can influence the severity and type of injury.

**Why Each Wrong Option is Incorrect**
**Option A:** Fracture - Fractures are a common complication of falls from height, often occurring in the long bones of the limbs or the pelvis.
**Option B:** Head injury - Head injuries, including skull fractures and intracranial hemorrhages, are also relatively common in falls from height.
**Option C:** Spinal cord damage - Spinal cord injuries can occur in falls from height, particularly if the individual lands awkwardly or strikes their head or neck.

**Clinical Pearl / High-Yield Fact**
When assessing a patient who has fallen from height, it's essential to consider the possibility of internal injuries, including abdominal and genital trauma, which may not be immediately apparent.

**Correct Answer:** D.