A.1mm B.2mm C.3mm D.4mm E.5mm
A.关节腔真空征 B.关节囊钙化 C.关节面下囊性变 D.椎弓峡部崩裂 E.关节突增生并骨赘形成
A.11~12mm B.12~13mm C.13~14mm D.14~15mm E.15~16mm