Drummond D S
University of Pennsylvania School of Medicine, Philadelphia.
Orthop Clin North Am. 1988 Apr;19(2):281-9.
To provide the stability of segmental spinal instrumentation without the risk associated with the passing of sublaminar wires, a technique of SSI was developed that uses the base of the spinous process as a site for purchase. To provide a broad attachment to the spinous process, a button-wire implant was developed. The rods used are a Harrington distraction rod for the concave side of the curve and a Luque rod for the convexity. Both are attached to the spine at each level by the button-wire implant. Biomechanical testing confirms that the implant provides load sharing, an advantage over wire alone, and that the instrumented spine is stable when compared with other systems. Clinical review showed approximately 60 per cent correction of the average curve, a small correction loss, and a better sagittal alignment than achieved previously with Harrington distraction alone. Complications were few.
为了在不承担椎板下钢丝穿过相关风险的情况下提供节段性脊柱内固定的稳定性，开发了一种使用棘突基底部作为固定点的节段性脊柱内固定技术。为了实现对棘突的广泛附着，研发了一种纽扣钢丝植入物。所使用的棒材，在弯曲凹侧为哈灵顿撑开棒，在凸侧为鲁克棒。二者均通过纽扣钢丝植入物在每个节段与脊柱相连。生物力学测试证实，该植入物可实现负荷分担，这是相较于单纯使用钢丝的一个优势，并且与其他系统相比，植入内固定的脊柱更稳定。临床评估显示，平均弯曲度矫正约60%，矫正丢失较小，矢状面排列比之前单纯使用哈灵顿撑开更好。并发症较少。
