Hallux valgus constitutes of a progressive adduction of the hallux in the first metatarsal joint, accompanied by progressive varus in the first ray, pronation of the first metatarsal bone and medial displacement of the head of the first metatarsal bone. It may be accompanied by more or less severe degenerative changes in the MTPJ and a deformity in the IP joint. Hallux valgus is a condition encountered daily in orthopedic practice. The aim of the study was to evaluate the clinical and radiological results of treatment of moderate to severe hallux valgus deformities with the use of closed wedge osteotomy at the Trauma and Orthopaedics Department in the period from 2016 to 2020. The research material encompassed 91 feet of 82 patients. The assessment was based on a retrospective analysis of medical documentation and an analysis of radiograms made within the research time frame. The pre- and post-operative assessment was carried out in accordance with the AOFAS MTP-IP score and a radiological scale based on the aforementioned radiograms allowing for the determination of the HVA and IMA angles. Data analysis showed that treatment with the closed wedge osteotomy renders treatment results which can be deemed as good and very good.