Questão jurídica principal
Whether the refusal of supplementary benefits was unlawful because the medical evidence was insufficiently assessed.
Decisão extraída
The cantonal court was entitled to rely on the RAD report and to reject the treating physicians' assessments.
Fundamentação extraída
The assessment of evidence was not arbitrary. A file-based expert review can be sufficient where the decisive issue is the evaluation of an established medical condition; social and psychosocial factors are irrelevant to IV-relevant work incapacity.