Abstract:At present, the common surgical procedures for the Chiari malformation type I are comprised of posterior fossa decompression, duraplasty and tonsillectomy. Some neurosurgeons prefer these so called minimally invasive surgeries. However, there are still some failures for patients undergoing the above surgeries in clinical practice. Analyzing causes of many surgical failures, the author put forward the anatomical concept of occipitocervical dura angulation (ODA). The ODA is defined as the included angle between … Show more
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