Kernrechtsfrage
Whether the medical evidence was sufficient to assess any relevant worsening of health and work capacity up to the objection decision.
Extrahierter Entscheid
The existing MEDAS expertise did not adequately cover the development of work capacity until the objection decision; additional medical clarification was required.
Extrahierte Begründung
Later treating-physician reports suggested diagnoses not established in the 2003 expert report, and the file did not permit a reliable assessment for the whole relevant period. The authorities failed to order further investigations.