The severity of the lower back injury.
Is the injury just a sprain/strain or is it a more significant lower back disk injury?
The amount of medical bills incurred to treat the lower back injury.
This includes the amount of medical expenses incurred in the past and the amount that will be incurred in the future.
Has the lower back injury resulted in missed time and money from work both in the past and the future?
What life changes has the lower back injury caused? For example, are there recreational activities or hobbies that can no longer be enjoyed?
The permanency of the lower back injury.
Will the injury get better with time or is it a permanent lifelong injury?