Hypothesis 2

Either the bandage or the half cast, or both, put pathologic pressure on the lateral side of 
the leg.  This caused the chondral growth on the lateral of the cannon bone and/or the first 
phalanx to stop or greatly decrease.  The medial side continued to grow, which created a 
bow string effect, leading to a valgus deformity.  The growth of these bones is fastest 
during the first few months of life.  Since the bandage/cast was placed on the leg during 
the first few months of life, the deformity was profound.  The wounds on the dorsum are 
possible evidence that the bandage was applied too tightly, causing pressure necrosis of 
the skin.