[The impact of posterior atlantooccipital membrane on blood flow alterations in Chiari I malformation patients].

Chiari I malformation (CM) is usually associated with CSF flow disturbances at the level of craniovertebral junction. In current literature a few articles aim to demonstrate blood flow disturbances in Chiari I malformation patients. The paper discusses the role of posterior atlantooccipital membrane in vertebrobasilar insufficiency development and presents a case of successful treatment of blood flow alterations after decompression of craniovertebral junction and posterior atlantooccipital membrane resection.