Question

A man presents with back pain following a road traffic accident. There was no history of neurological deficit. X-ray spine is done. What is the diagnosis? 

• A. Spinous process fracture
• B. Chance fracture
• C. Fracture o base of vertebrae
• D. Compressed fracture

Hint:

For isolated back pain without neurological deficits following trauma, consider a spinous process fracture. This injury is often less severe than other spinal fractures.

Answer 1

The Correct Option is A

Step 1: Weight the 'no neurological deficit' clue.
After trauma, the stability/neurology of a spinal fracture depends on which columns are broken. An intact neurological exam strongly favours an injury confined to the posterior bony elements rather than one tearing through the canal or body. Lead the reasoning with this column logic.

Step 2: Locate the break on the film.
The X-ray shows a fracture of the posterior bony projection - the spinous process - the most posterior structure, well away from the cord and nerve roots. An isolated spinous-process (clay-shoveler's-type) fracture is mechanically stable and, predictably, leaves neurology intact, matching the stem.

Step 3: Eliminate the alternatives by column and neurology.
• Chance fracture - a flexion-distraction injury splitting through body, pedicles and posterior elements (three-column, classic seat-belt injury); often unstable and associated with abdominal injury - doesn't fit an isolated posterior break.
• Fracture of the base of the vertebra - involves load-bearing structures and would more likely threaten the canal/neurology.
• Compression (wedge) fracture - collapse of the anterior vertebral body (axial load/osteoporosis), producing anterior wedging - not a posterior spinous-process lesion.

Step 4: Conclude.
An isolated posterior-element break with normal neurology = spinous process fracture.

Final Answer: Option 1 - Spinous process fracture.