颈椎横突孔和椎动脉的观测及其临床意义

本文观察150个正常成人离体颈椎（C3－C6）的横突孔和30具成人尸体（男18、女12）的椎动脉，测量两侧横突孔的内径、横突孔-钩突间距和椎动脉在第六颈椎横突孔下方的外径。观察结果，横突孔的横径左侧为6．82±0.75mm，右侧为6．71±0．86mm；横突孔的失状径左侧为5．68±0．82mm，右侧为5．45±0．76mm。椎动脉的外径左侧为3．80±0．65mm，右侧为3．20±0．45mm。结果表明，正常横突孔的内径明显大于椎动脉的外径，但横突孔内壁骨质增生或钩突增生突入孔内，并压迫椎动脉时，会引起椎动脉型颈椎病。

Observation on the Foramina Transversaria and the Vertebral Artery with Reference to Its Clinical Significance

150 normal adult cervical vertabrae (C3 -C6) were observed. Diameters of the ForaminaTransversaria (FT) and distances from the lateral tip of the uncinate process to the medial border of theFT were measured. The diameters ot the vertebral arteries at the lower margin of the FT of C6 were alsomeasured in 30 cases of cadavers (male 18, female 12). Results showed, under normal cirumstance thediameters of the FT were driously larger than those of the vertebral arteries, the vertebral artery wouldnot be compressed. The cervical spondylopathy of the vertebral artery type only could be caused whenhyperplasias existed.