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What is Blounts disease and explain in detail?
Blounts disease (or Blount disease) is a growth disorder of the tibia (shin bone) which causes the lower leg to angle inward, resembling a bowleg. It is also known as "tibia vara".

Description and risk factors
Blount disease is a growth disorder of the shin bone which causes the lower leg to angle inward, resembling a bowleg. It can present in boys under 4-years in both legs, or in adolescents usually on one side. Causes are thought to be genetic and environmental, like obesity, African-American lineage, and early walkers.

Etymology
Blount disease is named after Walter Putnam Blount (1900–1992), an American pediatric orthopedic surgeon, who described it in 1937. It has also been known as Mau-Nilsonne Syndrome, after C. Mau and H. Nilsonne, who published early case reports of the condition. it is today considered an acquired disease of the proximal tibial metaphysis rather than an epiphyseal dysplasia or osteochondrosis.

Diagnosis
Differential Diagnosis
Lower extremity deformities in Rickets can closely mimic those produced by Blounts disease. To differentiate between Rickets and Blounts disease it is important to correlate the clinical picture with laboratory findings such as calcium, phosphorus and alkaline phosphatase