Kernrechtsfrage
Whether the cantonal court and IV office breached the duty to investigate by relying on incomplete medical evidence and not ordering an interdisciplinary expert opinion.
Extrahierter Entscheid
Yes. The file did not allow a reliable, comprehensive assessment of the medical situation; an interdisciplinary expert opinion was required.
Extrahierte Begründung
Specialist reports documented objective cervical spine changes and divergent work-capacity assessments. BEFAS and RAD notes were insufficient, and the rehabilitation records did not resolve the contradictions. A psychiatric assessment was also needed if pain symptoms could not be objectively explained.