Zagra A, Lamartina C, Pace A, Ramondetta V, Vercellesi E
Istituto Ortopedico Galeazzi, Milano, Italy.
Spine (Phila Pa 1976). 1990 Aug;15(8):796-802.
Forty-eight cases of posterior vertebral arthrodesis for scoliosis, performed with or without instrumentation, were examined using computed tomography (CT) scanning to study the evolving fusion mass. The authors observed that the fusion mass area is more voluminous in the cases performed without instrumentation than in the ones performed with instrumentation, and that 2 years after fusion the bone mass shows already a considerable increase. For the cases operated with Harrington's technique, the increase of the fusion mass is very slow and becomes considerable 5 years after operation. In both series, the section of the fusion masses at the apex of the curve is asymmetric (with prevalence on the concave side), with an area of central resorption that shows the structure of a long bone (box section).
对48例脊柱侧弯后路椎体融合术病例进行了计算机断层扫描（CT）检查，以研究融合块的演变情况，这些病例有的采用了内固定，有的未采用。作者观察到，未采用内固定的病例中融合块面积比采用内固定的病例更大，并且融合后2年骨量已出现显著增加。对于采用哈灵顿技术手术的病例，融合块的增加非常缓慢，术后5年才变得显著。在这两个系列中，曲线顶点处融合块的截面不对称（凹侧占优势），有一个中央吸收区域，显示出长骨的结构（箱形截面）。
