Table 1.

Summary of Kennedy’s KD main subtypes.

Direction	Frequency	Mechanism	Structures	Associated Damage
Anterior	40%	Hyperextension	ACL rupture first	Popliteal artery (Intimal tear)
Posterior	33%	Dashboard	PCL rupture first	Popliteal artery (Complete tear)
Lateral	18%	Varus/valgus stresses	Tibial plateau fractures	Peroneal nerve
Medial	4%	Varus/valgus stresses	Tibial plateau fractures	PLC damage