Erica Johnson - CBC NewsDavid Pontone's voice still shakes as he recalls having to crawl out of Toronto's Humber River Hospital on his hands and knees.  "The pain was unbearable," said Pontone. "To be able to walk properly was impossible." It happened on April 18, 2018, but involved a lengthy battle for his family to obtain video footage of the event. ADVERTISEMENTThe 45-year-old had gone to emergency, complaining of excruciating pain in his legs.  Pontone also told medical staff he took medication for bipolar affective disorder — a mental illness that causes severe...…Erica Johnson - CBC NewsDavid Pontone's voice still shakes as he recalls having to crawl out of Toronto's Humber River Hospital on his hands and knees.  "The pain was unbearable," said Pontone. "To be able to walk properly was impossible." It happened on April 18, 2018, but involved a lengthy battle for his family to obtain video footage of the event. ADVERTISEMENTThe 45-year-old had gone to emergency, complaining of excruciating pain in his legs.  Pontone also told medical staff he took medication for bipolar affective disorder — a mental illness that causes severe...WW…