Ciara Mageean should return to full training in three weeks after being ruled out of the European Indoors, her coach Jerry Kiernan has said.
Kiernan told BBC Sport the Portaferry woman's heel problem is not on the same foot which had an ankle injury that ruled her out for almost two years.
"She could have gone to the European Indoors but it wasn't worth the risk," added Kiernan.
"She would have been OK to run the heat but might have felt it in the final."
Kiernan added that Mageean, 23, will work out every day in the swimming pool over the next three weeks before making her return to full training.
Mageean withdrew from the Irish Indoor Championships in Athlone over the weekend and it was then revealed that she had also pulled out of the European Indoors which take place in Prague on 6-8 March.
"This is not a serious injury but it does need care and if she competed in Prague and continued to train on as normal, then it could have developed into something more concerning."
|Ciara Mageean factfile|
|January 2008: Wins Irish Indoor 1500m title as a 15-year-old|
|July 2009: Wins World Youths silver and European Youths gold|
|July 2010: Clinches World Junior 1500m silver in Moncton, Canada|
|Oct 2010: Reaches Commonwealth 1500m|
|January 2011: Handed lucrative sponsorship deal by New Balance|
|July 2011: Earns European Junior silver|
|August 2011: Clocks Olympic B 1500m standard of 4:07.45|
|July 2012: Misses out on London Olympics place|
|July 2014: Wins Irish 1500m title after injury lay-off of almost two years|
|February 2015: Improves 3000m indoor PB to 8:55.09|
The Dublin-based Kerryman said that he had "fully expected" Mageean to win a medal in the 3000m in Prague before the plantar fasciitis heel problem ruled her out of the championships.
Mageean is currently ranked sixth in this season's European indoor 3000m rankings after clocking a personal best of 8:55.09 at the Millrose Games in New York on 14 February.
With the European Indoors out of the equation, Mageean will now refocus her season on preparing for twin challenges at the World University Games in South Korea in early July and the IAAF World Championships in Beijing in late August.
Kiernan, who finished ninth in the marathon at the 1984 Olympics in Los Angeles, makes no secret about his belief that Mageean will follow an outstanding junior career by making an impact in the senior ranks.
The Portaferry woman won a magnificent World Junior 1500m silver medal in Moncton in 2010 and also picked up World Youths, European Junior and European Youth Olympics medals.
"She has a huge amount of improvements to make and you are talking about an athlete who already is at a very high standard.
"As every year goes by, she should get better.
"She did her 8:55.09 time in New York off decent training but not the kind of workload that you would be expecting an athlete of that quality to be doing.
"She is a great girl to work with and has a great attitude."