Conversation so far:
What was Curtly Ambrose's victory?
Curtly Ambrose played in all three ODIs versus South Africa, all of which were won by his team, West Indies
What year was Curtly Ambrose's victory?
His victory over South Africa was in April 1992
How did Curtly Ambrose feel about his victory?
Why was Curtly Ambrose less effective?
Curtly Ambrose had a knee injury that needed surgery

Question: How did the knee injury happen?
Self-contained rewrite: How did Curtly Ambrose's knee injury happen?