28 如圖,X 光脊椎 L-Spine Dynamic View 的診斷,下列何者正確?
(A)L4-5 一級後滑脫(Retrolisthesis of L4 on L5 and in grade I)
(B)L4-5 一級滑脫(Spondylolisthesis of L4 on L5 and in grade I)
(C)L5S1 一級後滑脫(Retrolisthesis of L5 on S1 and in grade I)
(D)L5S1 一級滑脫(Spondylolisthesis of L5 on S1 and in grade I)