Alun Wyn Jones says he is unsure when he will be able to return from injuries to both feet, but has played down concerns he may miss Wales' tour of New Zealand.
Jones sat out his country's final Six Nations match against Italy in mid-March, with coach Warren Gatland suggesting the influential lock required six weeks of rest to overcome a persistent foot problem.
In an interview with Wales Online published on Saturday, Jones revealed he is suffering from "plantar fasciitis of the left foot and Achilles tendonitis on the right foot".
The 30-year-old, capped 98 times by Wales and a further six times by the British and Irish Lions, added: "I don't know when I will be able to play again. There is a bit of hope, but you would need to speak to the medical staff about the time-scales involved.
"We don't know whether one [injury] was a result of the other or it was just a build up. It's wear and tear I suppose. It's where I find myself. It's not ideal and I'm quite frustrated, but it's the situation I find myself in.
"It had been troubling me for quite a while. It didn't really go away. I have been managed for probably a good three months and I was aware of it before that. Everyone plays with niggles and you carry things. It's just unfortunate for myself it came to a head when it did.
"They say discretion is the better part of valour and I probably should have put my hand up a little earlier than I did because I didn't really do myself or the team favours with the way I was playing towards the end. I suppose it was something where the heart ruled the head a bit too much. I've got to deal with it now."
Asked whether his availability for Wales' tour of New Zealand was a concern, Jones replied: "I wouldn't go that far. My initial desire was to feature in the last few games of the season for the Ospreys.
"I have got to be fit. I have just got to focus on getting fit. I am not where I want to be from a physical point of view."