The centre-back is one step closer to returning to full match fitness following the surgery that ruled him out of the European Championship in Poland and Ukraine
The 34-year-old picked up the knock in the closing stages of the 2011-12 campaign, and missed Euro 2012 after undergoing surgery to correct the problem.
However, the Barca captain trained away from the rest of the squad in their penultimate session before flying out to Germany on Tuesday for a pre-season friendly against Hamburg.
Puyol will undergo further medical tests next Monday to confirm he is fit enough to return to full training – the same day that the team's Spanish internationals rejoin preparations.
The Blaugrana have reportedly scheduled talks with Puyol for later this week to discuss a contract extension. His current deal is due to expire in June 2013.