Kathleen and Douglas Schofield, parents of Mark Scholfield, 34, have flown to the island to be with their teacher son, who has just emerged from a coma.
Extensive injuries include a broken jaw, a damaged eye socket and broken arms, say Canadian media reports. Mr Schofield has undergone surgery several times, with hospital fees mounting.
His brother Scott, who is attempting to raise the cost of Mark's treatment, said the appeal had attracted $20,000 in a single day.
Scott Schofield said there had been ''a great outpouring of financial - and even emotional support'' since his oldest brother was involved in the single vehicle crash on Phuket.
All that's clear so far is that the crash took place a week ago and Mr Schofield was severely hurt.
He had been teaching for seven years in Korea and arrived on Phuket in August to teach in Thailand.
In a statement on behalf of his family, Scott Schofield said: ''Our family is humbled by the tremendous love and support expressed toward our brother Mark.
''The generosity from family, friends and even strangers is overwhelming, and we appreciate all your continued love, thoughts and prayers.
''At this time we still do not have a clear picture about his long-term rehabilitation, but initial reports give us a lot of positive hope to build upon.
''It is very heartening to know the type of support we have here in Nova Scotia, which extends throughout the world. With love, the Schofield Family.''
Statistics on the number of expats and residents involved in motorcycle crashes on Phuket have been difficult to come by since the Phuket Public Health department ceased its regular monthly updates in April 2012.
Phuketwan supports the Mothers or Motorcycles (MoM) road safety awareness campaign and 100 percent helmet usage for Phuket motorcycle riders.