On Saturday morning, the "Stronger" rapper, 44, shared a trio of shots on Instagram of x-rays of what appears to be Saint's broken ... image of Saint sitting in a wheelchair with his right arm ...

The 26-year-old suffered a broken ... my arm with me, that thing ain’t moving. That’s when I felt the cracking," Robertson commented further. "I told Kerby, ‘Tell them to come get me.’ ...