Key legal question
Whether the insured's health had materially changed between the pension decision of 2015 and the 2016 objection decision so as to justify a pension revision under Art. 17 ATSG.
Extracted holding
No material and durable change was proven within the relevant comparison period.
Extracted reasoning
Although there was a temporary worsening in autumn 2015, the medical evidence showed subsequent improvement by January/April 2016 and no decisive lasting deterioration of shoulder function.