Spinal cysts are fluid-filled sacs that develop in the lumbar spine as a result of degeneration in the joints – which is something that Murray alluded to in his press conference after Tuesday’s withdrawal.
“Like all tennis players, we have degenerative sort of joints and stuff in the back,” said Murray. “But it’s all predominantly been left-sided for me for pretty much my whole career. I have never had too many issues with the right side.”
The news leaves Murray in an awkward position with regard to his planned swansong. Singles tennis at Wimbledon would seem to be a bridge too far, but he could perhaps try to appear on the doubles court alongside brother Jamie. This would involve less movement around the court and give him a couple more days’ grace, as the doubles don’t start until the later part of the first week.
Or, if he is determined to say farewell on the singles court, he could try to get himself ready for the US Open, which starts at the end of August.
There would be an emotional logic to this option. While Murray would clearly consider Wimbledon to be his favourite venue, Flushing Meadows also rates highly. He won his one junior slam title in New York, then landed his maiden senior major in the same city, defeating Novak Djokovic over five sets in the memorable 2012 final.
One other option for Murray could possibly involve saying goodbye at the Laver Cup, like Roger Federer two years ago in London. However, this year’s Laver Cup is being held in Berlin, which would be a slightly odd venue to choose.
Alternatively, Murray – who is 37 – could potentially retire on the spot. Or he might decide to continue, and find out what his ageing body might be capable of achieving next season. He has always been a hard man to predict.