what zone is the sacral ala
Zone 1 fractures are sacral fractures lateral to foramina. These are most common fractures and associated with nerve injury in 5%. Usually, L5 nerve root is affected.acral fractures are missed quite often, as often as 75% in patients without neurological deficit and about half of those with deficit. Neurologic injury associated with sacral fractures can range from an incomplete injury of a single nerve root to involvement of the entire cauda equina.