Depends on the type of surgery that was elected by Chandler/his doctors. Option 1 is to use part of the Patella tendon with attached bone to replace the ACL. Option 2 is use use multiple threads of the hamstring to replace the ACL. Option 3 is the cadaver. From the research that I've read (I recently tore my ACL), the cadaver option is NOT recommended for athletes because the strength of the cadaver's ACL is unknown, plus your body could reject the foreign object. There doesn't seem to be conclusive evidence which of the options is better at this point, although you do tend to heal fast with option 1 because the only healing that needs to occur is bone to bone since the patella tendon was never detached, plus the hamstring doesn't need to have it's strength rebuilt.