This video shows Tyler Walker, who is 6-foot-3 and about 210 pounds, lifting the 5-foot-4, 110-pound teen girl out of the chair and slamming her face into to the floor.
'It was then evident that I had caused her injury and knocked out her front tooth while throwing her on to the hard linoleum hospital floor, while her hands were still handcuffed behind her back,' he wrote in his report.
Alexis Acker filed a claim in May saying she suffered injuries to her face, head, teeth and jaw - and continues to suffer from PTSD, migraines and cognitive difficulties.