A<unk>  is a condition in which the bone segment distal to a joint is angled outward, that is, angled laterally, away from the body's midline. The opposite deformation, where the twist or angulation is directed medially, toward the center of the body, is called varus. Common causes of<unk>  knee (genu<unk>  or "knock-knee") in adults include arthritis of the knee and traumatic injuries.
Valgus deformity
Planovalgus deformity
Habit-tic deformity
Varus deformity
Joint locking 
Lid lag
Gibbus deformity
Swan neck deformity