The Springboks pivot started the game despite his discomfort, but was replaced after five minutes by teen talent Curwin Bosch, who went on to score 27 points in the match.
"It is difficult to say exactly the approximate length of recovery will be in Pat's case as he undergoes further scans, but his return is estimated at six to eight weeks," Sharks team doctor Alan Kourie said on Monday (NZT Tuesday).
