Bogduk N
Division of Neurology, Prince Henry Hospital, Little Bay 2036, New South Wales, Australia.
Cephalalgia. 1981 Mar;1(1):41-50. doi: 10.1111/j.1468-2982.1981.tb00007.x.
Dissections of five human adult cadavers revealed that the C2 spinal ganglion bears a constant relationship to the dorsal aspect of the lateral atlanto-axial joint. Radiologically, the ganglion lies extradurally opposite the midpoint of the silhouette of the lateral atlanto-axial joint space. Needles can be introduced onto this target point using fluoroscopic control and used to perform selective local anesthetic blocks of the C2 spinal nerve. This technique is applicable in cases where it is difficult to decide on clinical grounds whether occipital headaches are due to an upper cervical abnormality or are a symptom of tension headache or common migraine. In particular the technique anesthetizes the otherwise inaccessible articular branches of the median and lateral atlanto-axial joints which may be an occult source of headache.
对五具成年人体尸体的解剖显示，C2脊神经节与寰枢外侧关节的背侧保持恒定关系。在放射学上，该神经节位于硬膜外，与寰枢外侧关节间隙轮廓的中点相对。可在透视控制下将针插入该靶点，用于对C2脊神经进行选择性局部麻醉阻滞。该技术适用于基于临床情况难以判定枕部头痛是由上颈椎异常引起还是紧张性头痛或普通偏头痛症状的病例。特别是该技术可麻醉寰枢正中关节和外侧关节原本难以触及的关节支，而这些关节支可能是隐匿的头痛根源。
