Shoaib Akhtar is aiming to return to fitness in time for Pakistan's tour of England, which begins in mid-July.
Shoaib had both knees operated on in Australia in February after being diagnosed with a degenerative disease.
He missed Pakistan's one-day series against India in February and was ruled out of an ongoing tour of Sri Lanka.
The fast bowler told Pakistan's Daily News: "I have started light training and will be back in action on Pakistan's tour to England."
Pakistan will play four Tests and five one-day internationals in England this summer and the hosts will view the series as an opportunity to exact revenge after receiving a drubbing in Pakistan late last year.
Shoaib, 30, who was the home team's star with 17 wickets in the three Tests, said his operations had gone smoothly.
"The arthroscopy went well and now I have started upper body training and will start light cycling and swimming from next week," he said.
"The operations won't curtail my run-up and won't have any affect on my bowling.
"My knees are stable and I want to play selected matches so that I can contribute to the best effect whenever I am on the field."
Shoaib has missed 35 Tests out of 71 since he made his debut in 1997, but has rubbished rumours that his career might be grinding to an end.
He said: "I heard people raising doubts over my career after the operations but I am hopeful that I can play for another five to six years."