Djokovic says he largely feels fine physically, with a blister on his foot his biggest concern.
It is a marked difference to some of his previous Australian Open campaigns.
Last year, he quit in the semi-finals because of a hamstring tear sustained in a super-human effort to beat Carlos Alcaraz in the previous round.
In 2023, he won the title despite playing with a three centimetre tear in his hamstring.
Two years earlier, he also triumphed despite tearing an abdominal muscle in the third round.
Djokovic cannot afford any physical issues if he is going to beat Sinner and then potentially 22-year-old Alcaraz in Sunday’s final.
“You always have some minor issues with your body, at least for me every single day,” Djokovic said.
“But major issues, no. Thankfully, that’s still not posing a challenge for me and obstacle in order for me to be able to play and move around the way I want to.”
Djokovic feels being injury-free is a stroke of luck as he attempts to become the oldest Grand Slam men’s champion in the Open era.
Considering his meticulous pursuit of almost every record there is in the sport, it feels wrong to put anything Djokovic down to fortune.
But avoiding a default in the third round, followed by a walkover and then a retirement, is an enviable pattern.
Against Musetti, Djokovic also recovered from falling victim to his own exemplary sportsmanship.
As he served to stay in the second set, Djokovic conceded a point by admitting to umpire James Keothavong he touched a ball on its way out. The Italian would go on to claim the game.
“I’m going to double my prayers tonight,” Djokovic said.
There is no doubt Djokovic needs to be sharper both technically and mentally if he is to end Sinner and Alcaraz’s recent dominance at the majors.
Musetti was superb against Djokovic, but there was no escaping the fact the Serb was poor by his lofty standards.
“I think I’ve underperformed for the level that I showed throughout this tournament,” Djokovic added.
“I have to play better – no doubt about it.
“I know that if I’m feeling well and the body is holding on and I’m playing well, then I always have a chance.”