Right now it seems as if injuries are plaguing UFC fighters, and Michael Bisping is not exception. Recently he caught up with Karyn Bryant and explained that a knee injury is the reason for his dropping out of UFC 149 in his fight against Tim Boetsch.
Bisping stated he had recently went to his doctor for an MRI and found some loose cartilage floating around in his knee as well as a torn meniscus, and must have surgery. Check out the rest of the interview above.
Source: MMA Heat