Key legal question
Whether the later left arm/shoulder complaints were naturally causally linked to the 2006 accident as a relapse or late consequence
Extracted holding
The insured did not prove a natural causal connection with the required degree of probability; the complaints were more likely degenerative than accident-related.
Extracted reasoning
A long treatment-free interval, lack of sustained complaints or work incapacity until 2010, and medical evidence favoring degenerative findings over an accident-induced tendon rupture made accident causation insufficiently probable.