Kernrechtsfrage
Whether the insured person was entitled to a three-quarter invalidity pension from 11 November 2005 instead of only a quarter pension.
Extrahierter Entscheid
The Federal Supreme Court found no legal error in the cantonal assessment and left the quarter pension unchanged.
Extrahierte Begründung
The medical evidence was not arbitrary to rely on: the expert opinion was coherent, the divergences in diagnoses did not undermine the decisive assessment of work capacity, and the record consistently indicated a largely stable condition over years.