JP was taken off late in the first-half after an exchange of punches with opposing prop Rhys Thomas. Glasgow boss Hugh Campbell said: "We will have to take a look at the video. At the moment, all I can say is that it appeared to be a very nasty incident."
JP had the joint relocated under general anaesthetic at the Western Infirmary but Glasgow team doctor Gerry Haggerty claims he would be lucky to return to action this year. "He will see an orthopaedic surgeon on Monday but we are probably looking at a minimum of three months out," he said.