Complex Vertebral Malformation (CVM) was initially described in 2000, after a large number of stillbornHolstein Friesian calves with congenital deformations was recorded in the Danish bovine genetic disease program.Ever since, several similar cases have been reported in other countries. In CVM calves, the cervical and thoracicparts of the vertebral column are malformed, the carpal and tarsal joints are contracted and the fetlocks are twistedand the calves have low body weights. CVM can be confirmed by a DNA-PCR test demonstrating a homozygousCVM gene. This paper describes a case of CVM in a Belgian dairy herd.