Work accident claim denied when pre-existing shoulder condition was the primary cause of injury.

The Supreme Court of Finland dismissed the claim for work accident compensation regarding the plaintiff's shoulder injuries. The plaintiff suffered fractures and soft tissue damage while rappelling, but medical evidence showed a pre-existing rotator cuff tear that significantly contributed to the injury. The court ruled that because the pre-existing condition was the dominant factor in the damage, the statutory requirement for a work-related accident was not met.