Portsmouth are hopeful that Svetoslav Todorov will make a full recovery after undergoing surgery on his knee in America.
Todorov scored 26 goals last season
The Bulgarian striker is expected to miss the rest of the season after suffering cruciate ligament damage in training last month.
But Portsmouth physio Gary Sadler said an operation by specialists at the Steadman Clinic in Colorado had gone "very well".
"It appears that Toddy's anterior cruciate ligament was not completely ruptured and the doctor performed a
technique whereby the ligament was reconstructed in a way as to stimulate maximum regrowth and healing," said a statement on the club's website.
"This is good news as it gives Toddy the best chance to have a completely recovered knee after surgery."
Todorov, who was last season's top scorer with 26 goals, collapsed after catching his studs in the ground during a routine training game at Portsmouth's Wellington Sports Ground training centre.
Pompey have fared well in his absence, taking eight points from their first four games to lie third in the table.