Key legal question
Whether the insured person's health had materially worsened under Art. 17 LPGA so as to justify revising the disability pension
Extracted holding
No notable deterioration was established; the prior earning capacity assessment remained valid.
Extracted reasoning
The court accepted the medical expertise showing unchanged work capacity in adapted work and found that the later certificates did not convincingly contradict it. The lower court's fact-finding and evidence assessment were not arbitrary and did not require further investigation.