A.5.1定點(diǎn)項(xiàng)中點(diǎn):頭后正中線(xiàn)上,枕外隆突正中向下2.0±0.5cm處。項(xiàng)A點(diǎn):枕外隆突正中向下2.0±0.5cm,旁開(kāi)2.0±0.5cm處,左右各一點(diǎn)。項(xiàng)B點(diǎn):枕外隆突正中向下2.0±0.5cm,旁開(kāi)4.0±0.5cm處,左右各一點(diǎn)。A.5.2簡(jiǎn)便取點(diǎn)枕外隆凸與乳突的弧形連線(xiàn)即上項(xiàng)...[繼續(xù)閱讀]