The Safety and Efficacy of Isola-Galveston Instrumentation and Arthrodesis in the Treatment of Neuromuscular Spinal Deformities* by Muharrem Yazici, Marc A. Asher, and James W. Hardacker J Bone Joint Surg Am Volume 82(4): April 1, 2000 2000 by The Journal of Bone and Joint Surgery, Inc. Photograph showing the closed hook design features, which include variable throat heights and drop-entry placement. Muharrem Yazici et al. J Bone Joint Surg Am 2000;82:524 2000 by The Journal of Bone and Joint Surgery, Inc. Photographs showing the v-groove concept, in which a rod with a larger diameter is forced into a hemisphere with a smaller diameter as the connection is secured (Fig. 2-A). Muharrem Yazici et al. J Bone Joint Surg Am 2000;82:524 2000 by The Journal of Bone and Joint Surgery, Inc. . Muharrem Yazici et al. J Bone Joint Surg Am 2000;82:524 2000 by The Journal of Bone and Joint Surgery, Inc. Figs. 3-A through 3-E: Photographs demonstrating the six-degrees-of-freedom motion possible with the slotted screw-to-rod connection. Muharrem Yazici et al. J Bone Joint Surg Am 2000;82:524 2000 by The Journal of Bone and Joint Surgery, Inc. Anteroposterior translation. Muharrem Yazici et al. J Bone Joint Surg Am 2000;82:524 2000 by The Journal of Bone and Joint Surgery, Inc. Coronal plane angulation. Muharrem Yazici et al. J Bone Joint Surg Am 2000;82:524 2000 by The Journal of Bone and Joint Surgery, Inc. Sagittal plane angulation. Muharrem Yazici et al. J Bone Joint Surg Am 2000;82:524 2000 by The Journal of Bone and Joint Surgery, Inc. Transverse plane angulation. Muharrem Yazici et al. J Bone Joint Surg Am 2000;82:524 2000 by The Journal of Bone and Joint Surgery, Inc. Figs. 4-A and 4-B: Case 12, a man with progressive scoliosis and pelvic obliquity who was managed when he was twenty years and two months old.Fig. 4-A: Preoperative anteroposterior radiograph made with the patient sitting. Muharrem Yazici et al. J Bone Joint Surg Am 2000;82:524 2000 by The Journal of Bone and Joint Surgery, Inc. Fig. 4-B: Anteroposterior radiograph, made at four years and three months postoperatively with the patient sitting, showing maintenance of the correction. Muharrem Yazici et al. J Bone Joint Surg Am 2000;82:524 2000 by The Journal of Bone and Joint Surgery, Inc. Figs. 5-A through 5-D: Case 31, a boy with kyphoscoliosis and pelvic flexion who was managed when he was fourteen years and eight months old. Muharrem Yazici et al. J Bone Joint Surg Am 2000;82:524 2000 by The Journal of Bone and Joint Surgery, Inc. . Muharrem Yazici et al. J Bone Joint Surg Am 2000;82:524 2000 by The Journal of Bone and Joint Surgery, Inc. Anteroposterior and lateral radiographs, made twenty-six months after the operation with the patient sitting, showing good correction of the deformity and integration of the hook, wire, and screw anchors. Muharrem Yazici et al. J Bone Joint Surg Am 2000;82:524 2000 by The Journal of Bone and Joint Surgery, Inc. . Muharrem Yazici et al. J Bone Joint Surg Am 2000;82:524 2000 by The Journal of Bone and Joint Surgery, Inc.