<prompt> Genu valgum deformity is seen in all except -RicketsBone DysplasiaRheumatoid ahritisMedial compament osteoahritis  <response>: Genu valgum is the outward detion of the longitudinal axes of both tibia femur .apex of the curve or angulations of the knee are medial. Causes can be unilateral- trauma ,osteomyelitis ,tumor bilateral - physiological : disappear by 4 years, - pathological : congenital disorders, idiopathic, developmental disorders e.g epiphyseal dysplasia ,endocrine disorder like thyroid, metabolic disorder e.g rickets ,paralytic disorder , traumatic disorder , infective disorder, degenerative disorder,inflammatory disorder e.g rheumatoid ahritis REF:textbook of ohopedics, John ebnezer, 4th edition, pg.no.418 