And the France global has revealed the problem is reoccurring and will need continuous treatment for the remainder of his career.
'Now, every day I do this and it is OK but sometimes with all the games we play every three days, it is hard and I need to have a rest to recover well for my Achilles.
"That's why last time I was injured but now it is OK with this".
In order to be fit for Arsenal's final Premier League game of the season against Everton and their FA Cup final clash against Chelsea, Koscielny will sit out of his side's match with already-relegated Sunderland on Tuesday night (16 May). "Sometimes it is better to miss one game to be fit for the others", he said.
"I am prepared to miss Sunderland to be fit for the last two games of this season. I know I need to do this every day to be fit for my team".
"It is not hard but you need to be careful with this because if you stop doing your own exercise programme for one or two weeks, the problem will come back".
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Ryon Healy started at first base Thursday and is likely to do so throughout the weekend against the Boston lefties. The righty has made one appearance with the big-league squad in 2017, striking out one in 1 ⁄3 scoreless innings.
The upturn in results looks like coming too late for Arsene Wenger and his side, however, as a place in the top four is now improbable with Liverpool and Manchester City also victorious over the weekend.
Heading into the final weekend of the season, they sit one point behind fourth-placed Liverpool and on the verge of missing out on the Champions League for the first time in almost two decades. Then of course we have a FA Cup final to "look forward" to against the newly crowned Premier League champions. For the players, it is always an important competition.
Arsenal defender Laurent Koscielny has refused to rule out a move back to France amid rumours Marseille are hoping to sign him this summer.
'I may want to return to France but lots of questions would be asked because it's never simple being at a club like Arsenal for seven years and returning to France. There are expected to be at least 10,000 empty seats and Koscielny admitted the uncertainty over the manager's future has affected some of his team-mates.
"It will be life choices, outside of football, that decide what happens next in my career", said Marseille coach Rudi Garcia. We need to fight for this club and don't think about what is happening with the boss or the players.
"This is a situation, maybe some players don't feel great but you need to be focused on our job and have the best results for Arsenal. He did an unbelievable job so we need to respect this and his decision at the end of the season".