Pat Zaranek, a spokesman for Donaghy, said Thursday that the former referee, serving a 15-month sentence in a gambling scandal, was struck in the right knee with a stick or other hard object in November.
Zaranek, of Executive Prison Consultants, says Donaghy expects to be transferred from the camp in Pensacola to a halfway house in Tampa next week.
Zaranek says Donaghy's knee still gives him trouble and that he will need surgery.
A Federal Bureau of Prisons spokeswoman declined comment.
© 2009 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.
CBS 8 invite you to play along with other San Diego football fans each week and pick the winners! See how you do against News 8's Sports Director, Kyle Kraska and win weekly prizes!
It was all a bit overwhelming for the latest opponent who could do nothing to slow Serena Williams at the Australian Open. So Dayana Yastremska, an 18-year-old from Ukraine, found herself wiping away tears as she walked to the net.