Key legal question
Whether the accident caused or durably aggravated the pre-existing spinal condition and disc herniation
Extracted holding
No durable accident-related aggravation was shown; the disc herniation was not plausibly causally linked to the accident.
Extracted reasoning
A lasting aggravation of a pre-existing spinal disease requires radiographic evidence of a rapid decrease in disc height after the trauma and the appearance or enlargement of marginal osteophytes. Those indicia were not established here.