The dysplasia commissions in Bern and Zurich are the Swiss reference centers for the evaluation of radiographs related to joint dysplasias (hip and elbow dysplasia, shoulder osteochondrosis, lumbosacral transitional vertebrae, etc.) and organize preventive ultrasound screenings. Radiographs are generally taken by private veterinarians and sent to one of the two commissions for official evaluation. Preventive ultrasound screenings are exclusively performed by radiologists certified by the ECVDI or ACVR.