Tuesday 19 September 2017 10:35, UK
Valentino Rossi has returned to training just 18 days after suffering a double leg fracture, his Movistar Yahama team confirmed.
Rossi underwent surgery in Ancona on September 1 following a crash in training and discharged himself from hospital the following day.
The 38-year-old rode his first couple of laps around the Misano circuit on Monday before the session was cut short by rain.
"The evaluation of Rossi's physical condition was inconclusive," Movistar Yahama said, with a decision expected midweek on whether the veteran will attempt to take part in this weekend's Aragon MotoGP.
If Rossi cannot compete his place should be taken by Dutch Superbike rider Michael van der Mark.
Rossi missed the San Marino Grand Prix but remains fourth in the standings, 42 points behind world champion Marc Marquez of Spain and Italy's Andrea Dovizioso with five rounds to go.
Rossi won the Dutch MotoGP in Assen in June to reignite his dream of a 10th world title and is fighting to be fit for the final races of the season, which finishes on November 12 in Valencia.