<prompt> CTEV is caused by all except -Neurological disorderIdiopathicSpina fibidaCubitus varus  <response>: Causes of CTEVCTEV may be either primary or secondary1 Primary or IdiopathicIt is the most common type of CTEVFoot deformity CTEV is the only manifestation, otherwise, musculoskeletal system is normal.2 SecondaryCTEV is a local manifestation of a systemic syndrome.Causes are:-Neurological disorders neural tube defects eg myelomeningocele, spinal dysraphismParalytic disorder due to muscular imbalance as polio, spina bifida, myelodysplasia, Friedreichs ataxiaArthrogryposis multiplexLarsen syndromeFreeman- Sheldon syndromeDiastrophic dwarfismSacral agenesis, tibial deficiency, constriction rings amniotic bands 