and combined PSGAG and CS treatment RR 2.7 (P 0.05) compared with CS used alone.
4. Discussion
Infectious arthritis was a rare event following intra- articular injection. Approximately 1000 horses should be treated with prophylactic antibiotics to prevent one infection following intra-articular in-
jection. The use of PSGAG-CS combination and the treating veterinarian were the only identified risk factors.
Acknowledgments
Conflict of Interest The Authors declare no conflicts of interest.