If a child is sickly, either with rickets or any other ailment that prevents ossification of the bones or is improperly fed, the bowed condition may persist. Thus the chief cause of this deformity is rickets. Skeletal problems, infection, and tumors can also affect the growth of the leg, sometimes giving rise to a one-sided bow-leggedness. The remaining causes are occupational, especially among jockeys, and from physical trauma, the condition being very likely to supervene after accidents involving the condyles of the femur. Childhood Children until the age of 3 to 4 have a degree of<unk> . The child sits with the soles of the feet facing one another; the tibia and femur are curved outwards; and, if the limbs are extended, although the ankles are in contact, there is a distinct space between the knee-joints. During the first year of life, a gradual change takes place. The knee-joints approach one another; the femur slopes downward and inward towards the knee joints; the tibia become straight, and the sole of the foot faces almost directly downwards. While these changes are occurring, the bones, which at first consist principally of cartilage, are gradually becoming ossified. By the time a normal child begins to walk, the lower limbs are prepared, both by their general direction and by the rigidity of the bones which form them, to support the weight of the body. Rickets Nutritional rickets is an important cause of childhood<unk>  or bow legs in some parts of the world. Nutritional rickets is due to unhealthy life style habits as insufficient exposure to sun light which is the main source of vitamin D. Insufficient dietary intake of calcium is another contributing factor. Rickets may also have genetic causes, occasionally called resistant rickets. Rickets usually causes bone deformities in all four extremities.<unk>  may resolve spontaneously with modification of life style activities or after receiving medical treatment. Some deformities do not correct spontaneously and need surgical intervention especially if they are severe and causing gait difficulties. The main surgical modality used to treat<unk>  arising from rickets is guided growth surgery, also known as growth modulation surgery. Blount's disease Blount's disease is a deformity in the legs, mostly from the knees to the ankles. The affected bone curves in or out and forms the usual "archers bow" which can also be called bow-legs. There are two types of Blount's disease. The first type is Infantile: this means that children under four are diagnosed with this disease. Blount's disease in this age is very risky because sometimes it is not detected and it passes to the second type of Blount's disease. The second type of Blount's disease is found mostly in older children and in teenagers, sometimes in one leg and sometimes in both; the patient's age determines how severe the diagnosis is. Osteochondrodysplasia Osteochondrodysplasia are a diverse group of genetic bone diseases or genetic skeletal dysplasias that manifest in generalized bone deformities involving the extremities and the spine. Bow legs or<unk>  is one of these deformities. The characteristic bone X-ray survey findings are important to confirm the diagnosis.
Genu varum
Cryptocotyle
Inoculum
Sequestrum
Scutulum
Genu valgum
Columella 
Caput medusae