Darren Barker is unlikely to fight again after his hip problems resurfaced in defeat to Felix Sturm, his trainer says.
Tony Sims threw in the towel during the second round of Barker's IBF middleweight title defence in Stuttgart with his man barely able to balance after two knock-downs.
Barker was clearly troubled by his hip, and it later emerged he had suffered a suspected dislocation to the joint.
The Barnet man has undergone surgery on his hips in the past, and speaking to Sky Sports after the fight Sims said: "It's a disaster - you'll probably never see him in the ring again.
"His hip went in the first round when he threw a right hand. He came back to the corner and said 'I think it's gone, it's hurting me'.
"In the second round he got clipped with a shot and - I don't know what's happened - it's completely gone on him. I was hoping it would just be a muscle injury but when he went down the next time I threw the towel in because I knew he couldn't move.
"He's had problems with his hips before and they're just not right. He'll have an X-ray at the hospital and we'll see what's happening from there."
Barker came close to retiring for good after his world title defeat to Sergio Martinez in October 2011, and his promoter Eddie Hearn reckons it is a "miracle" he returned to win the IBF belt from Daniel Geale earlier this year.
Hearn said: "With Darren Barker every fight is a bonus because his body has gone through the wars. To even get four fights out of him after he came back was a miracle.
Barker is entitled to a rematch with Sturm before the end of next summer, but Hearn said: "If it's as bad as we think it is I'm not sure he's going to be involved in the rematch, and if he's not involved in a rematch I would suggest that would make his decision for him."