Filho suffered fractures in his hand and hip after the vehicle he was driving collided headfirst with a Vectra. Filho told MMAFighting.com that he accidentally drove the wrong way on a road that was under construction.
The 39-year-old is in stable condition at Tijutrauma hospital and is expected to undergo surgery for his injuries soon.
Filho owns a 23-6-3 career mark and last competed in February 2014, when he lost a unanimous decision to Andre Muniz at Bitetti Combat 19. Filho owns notable victories over the likes of Murilo Rua, Ryo Chonan, Kazuo Misaki, Chael Sonnen and Melvin Manhoef.
Tristen Critchfield contributed to this report.