Ryan Jones will miss the start of the new RaboDirect Pro12 season after undergoing keyhole surgery to his knee.
The 31-year-old back-rower went under the knife after re-aggravating a historic knee injury in training.
Ospreys Head Physiotherapist, Chris Towers, confirmed: “After undergoing investigation, it was agreed that the best course of management was for Ryan to have some minor keyhole surgery.
“The early prediction sees him back available around the six-week mark.”