Andy Murray is investing total effort into a comeback, but won't be inspired if he can't attain his former lofty level of play, brother Jamie Murray says.

In an interview with The 2 Barrys Tennis Takeaway Podcast, Jamie Murray told hosts Barry Cowan and Barry Millns the former No. 1 is making every effort to return to the court after undergoing his second hip surgery in a year.

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"It's been very difficult for him since he stopped playing at Wimbledon in 2017, I think," said Jamie. "He's done absolutely anything and everything he can to get his body right to compete.

"In Australia he was like 'I just can't keep going like this' because there was just too much pain everyday and he said 'I need to go and get the surgery done but after that I don't know what will happen'. There was no sort of history of players doing that."

The 31-year-old Murray had a metal implant installed in his hip in a procedure in London in January, a year after his initial hip surgery in Melbourne.

Jamie Murray says his brother's comeback is a journey into the unknown. 

"The thing is nobody [playing singles] has had the surgery and on top of that nobody had had the surgery and then tried to go back and play tennis again," Jamie Murray told The 2 Barrys podcast. "He didn't really have anything to go on to know what was possible form the surgery but he doing his rehab and he getting more active as the video showed."

Andy Muray has said his goal is to play Wimbledon. His brother Jamie says the two-time Olympic gold medal champion's long-term future depends on what level he can achieve playing with an artificial hip.

“I guess when you’ve played at the top for so long and you’ve only every been about winning Grand Slams and Masters Series, I guess that’s the level that you want to come back to,” Jamie told The 2 Barrys Tennis Takeaway Podcast. “If you told him that you can come back and you can play to 40 in the world, I don’t think that’s inspiring for him when you’re used to playing semifinals, finals, and all these big matches.

“But again, I don’t know how much he misses it. I don’t know how much he misses the competition and being back on court competing. I would imagine for him, having had so many incredible moments on a tennis court, if you don’t feel like you can achieve them again then it would be difficult to stay quite motivated.”

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