Kernrechtsfrage
Whether the disability pension revision under Art. 17 ATSG was justified by a substantial improvement in health and earning capacity.
Extrahierter Entscheid
Yes. The prior full pension had been based on postoperative total incapacity, while the later MEDAS report established 50% capacity in adapted work and a favourable postoperative course; this showed a material improvement.
Extrahierte Begründung
The Court held that the 1999 full pension rested on the effects of the foot operation, not on the earlier preoperative reports. Compared with the earlier 100% incapacity after surgery, the 2009 assessment reflected a significant improvement.