Stuart Broad will miss the rest of England's Twenty20 international series with West Indies due to a knee injury.
England's captain in the shortest format confirmed after the 27-run defeat in Barbados that he is suffering with patellar tendonitis, commonly referred to as jumper's knee.
With the World Twenty20 just round the corner, the seamer explained he will sit out the next two matches against the Windies in order to lead his side in Bangladesh.
"I've got some patella tendinitis in my right knee," Broad, who bowled just two overs today, said.
"I've had it all winter. It's just been a managing thing all winter, but obviously the workload has been quite heavy for me - and it's gradually got a little bit worse.
"I caught my knee in the sand in (the one-day series in) Antigua, which has brought a lot of fluid into it.
"So there's not much movement in there, and I'll be missing the next two Twenty20s to have an injection to get right for the warm-up games in Bangladesh."
Broad expects, after several injections on the same joint already, a rest period - or perhaps even an operation - will be needed in the long term.
"I'll have to have a rehab period at some stage in the next 12 months, between six to 10 weeks,” he added.
"But there's a decent period at the end of the English season which I can look at probably - or maybe four weeks in April. But it won't put me in doubt for the (Twenty20) World Cup.
"It's just got to the stage at the minute where I can't move, so I need to treat it before then. It's something I need to try to get rid of."
Broad exacerbated the problem in England's series victory last week, and likened it to an injury West Indies' key spinner Sunil Narine appeared to suffer in today’s game at the Kensington Oval.
"I just was running back at mid-off, went to flick the ball up and my knee just got caught - a little bit like Narine today, I suppose - and it immediately hurt,” he said.
"Loads of swelling came into the knee, so it's really puffy ... I'm struggling to run at the minute."
Broad admitted England were surprised by the state of a pitch on which spinners excelled, Samuel Badree taking 3-17 from four overs before Narine and Marlon Samuels shared three scalps.
James Tredwell had earlier been the tourists’ best bowler with 1-16 from four overs, but Samuels’ unbeaten 69 lifted the Windies to 170 for three.
"(The pitch) definitely played different. There was quite a bit of grass on the wicket and we saw that all the seamers went at about eight an over or more and all the spinners got wickets with low economy rates," he said on Sky Sports 2.
"Whether that's to do with the batsmen not playing the spin particularly well or whether it's to do with it being very hard to play the spin, we'll need to analyse that.
"There will be some slower bowlers in the side come Tuesday, I think."