What caused Clubfoot in newborn to occur?

“Clubfoot” is a term that describes a complex, abnormal structural alignment of the bones and joints of the foot and ankle. It most likely represents abnormal development of many tissue types below the knee. The exact cause of clubfoot is still debated. It is likely caused by multiple factors, including genetic and environmental factors. Proposed theories of the cause of clubfoot include molding of the foot while still in the womb (in utero molding), primary muscle problems, primary bone deformity, primary blood vessel lesion, intrauterine viral infection, primary nerve lesion, and abnormal stiffening of the tissues. The actual cause is likely a combination of these factors.