A structured approach to reporting multi-ligament knee injuries will aid the reporter and ensure all injuries are identified, with often distracting edema in the soft tissues.  

ACL and MCL tears can occur together, and the fibula collateral ligament makes up one of the lateral collateral stabilizing structures.  The O'Donoghue unhappy triad is one such collection of injuries.

Segond fractures, easier to appreciate on radiographs, are associated with ACL tears. Its radiographic finding should alert the reader to recommend an MRI.