Jesus suffered ligament damage playing for Brazil at the World Cup and is expected to be out for three months.
The 26-year-old is making good progress, though, and he is no longer using crutches to get around.
Jesus is instead just wearing a full knee brace as he continues his rehab.
Arsenal, as they have always been, are reluctant to put an exact timeframe on how long Jesus will be out.
The striker, who visited his team-mates in the dressing room after their 0-0 draw with Newcastle, is desperate to get back to playing but Arsenal will not rush his recovery.
In his absence, Eddie Nketiah has led the line for Arsenal and scored two goals in three games since the Premier League resumed following the World Cup.
Arsenal manager Mikel Arteta has been pleased with the impact Nketiah has made.
“[I have] more faith in him every single day,” he said. “We see every day what he brings to the team, what he is as a human being and the way he is developing as a player.”
Jesus was joined at the Newcastle game by Arsenal legends Thierry Henry and Tony Adams, as well as former Gunners striker Eduardo.