The most important factors of knee stability include: * Ligaments of the knee: The knee joint is stabilized by four main ligaments: * Anterior cruciate ligament (ACL). The ACL has an important role in stabilization of knee extension movement by preventing the knee from hyperextending. * Posterior cruciate ligament (PCL) * Medial collateral ligament (MCL) * Lateral collateral ligament (LCL) * Joint capsule or articular capsule (especially posterior knee capsule) * Quadriceps femoris muscle * Appropriate alignment of the femur and tibia (especially in knee extension position )
Genu recurvatum
Dens evaginatus
Trichostasis spinulosa
Condylomata lata
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Mania errabunda