Kolisi suffered the injury during the DHL Stormers Vodacom Super Rugby clash against the Highlanders at Newlands in May, but opted out of the operation which would have set him back for longer than the estimated six weeks to recovery.
Boks Coach Rassie Erasmus on Wednesday confirmed the inevitable, saying that the flanker is also in doubt for the IRB Rugby World Cup pending his X-ray scan this Friday.
With a number of players still out of selection for the first three rounds of the Rugby Championships due to injury, Erasmus reiterated that there are plans in place to include those players in the next few weeks.
The Boks get the Rugby Championships underway with a clash against Argentina at the Emirates Airline Park on 20 July before flying out to Australasia for the Wallabies and the All Blacks.
Due to a number of players returning from injuries and some returning to play, Erasmus has also confirmed that he will be rotating his teams to ensure other more game time.
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– Report by Thando Gqamane