My 2 year old grandson was running and fell, we did not see him twist anything, however he will not walk on his foot. He has been scooting, crawling for 4 days now. X-rays showed nothing wrong. He says he has a boo-boo but we can move the foot, leg, hip, etc. No punctures, no bites, no pickers, nothing. They want us to see an Pediatric Ortho Surgeon...could this possibly be muscular/ligaments YYYY@YYYY ?