Incidence and Risk Factors for Instrumentation-related Complications After Scoliosis Surgery in Pediatric Patients With NF-1
Study Design. Retrospective cohort study. Objective. To assess the incidence and risk factors of instrumentation-related complication (IRC) in pediatric patients surgically treated for neurofibromatosis type 1 (NF-1) dystrophic scoliosis. Summary of Background Data. Surgical management including growing rods technique and early definitive fusion has been recommended to avoid progression of NF-1 scoliosis. However, no study has yet investigated the incidence and risk factors of IRC in these surgical interventions. Methods. Data of 59 pediatric NF-1 patients who had been surgically treated for dystrophic scoliosis were retrospectively reviewed. All of their clinical and radiographic data were collected. We evaluated potential risk factors, including age, sex, curve type, preoperative Cobb angle, kyphosis angle and spinal length, and surgical procedure. The univariate analysis and multivariate logistic regression analysis were performed to identify the risk factors associated with IRC. Results. Seventeen (28.8%) patients suffered 19 IRCs, including seven cases of curve progression, three cases of screw dislodgement, three cases of adding-on phenomenon, two cases of rod breakage, two cases of proximal junctional kyphosis, one case of cap loosing, and one case of pedicle cutting. The univariate logistic regression analysis revealed age
Conclusion: The surgical correction of patients having spinal deformity associated with NF-1 is challenging, however the radiographic and clinical outcomes are satisfactory. The all posterior approach can be a safe and effective surgical option for patients having dystrophic curves associated with NF-1. PMID: 32512989 [PubMed - as supplied by publisher]
Conclusions: The posterior-only approach produces a satisfactory correction of the dystrophic neurofibromatosis scoliosis if associated with the use of high-density third-generation instrumentations. We are confident in recommending posterior-only approach in dystrophic neurofibromatosis scoliosis with coronal curves till 110° and coexisting thoracic kyphosis till 80°
Conclusions: Our goals for NF-1 scoliosis are to obtain deformity correction, to achieve stable instrumentation by using longer fusion levels and to attain a solid fusion mass that can tolerate continual erosion during the long-term follow-up. We achieve this by using a circumferential approach for EOS associated with NF-1. Level of Evidence: Level IV—case series.
Study Design: This is a retrospective cohort study. Objective: To investigate surgical outcomes and instrumentation-related complications (IRCs) of dystrophic scoliosis associated with neurofibromatosis type 1 (NF-1). Summary of Background Data: Surgical management, including the growing rod technique and early definitive fusion, has been recommended to avoid progression of NF-1 scoliosis. However, no study has investigated the outcomes and complications of different surgical interventions. Materials and Methods: We performed a retrospective review of a cohort of 59 patients diagnosed with NF-1 dystrophic scolio...
ConclusionsSpinal deformity is the most common musculoskeletal manifestation of NF1. Cervical lesions are frequently asymptomatic, but patients with thoracolumbar scoliosis, dystrophic features, or a history of laminectomy should have the cervical spine carefully evaluated. For severe and progressive kyphotic deformities, most authors recommend a period of traction followed by a combined anterior-posterior fusion that is instrumented from parallel to parallel vertebra (or six or more levels). Close follow-up is very important because complications and progression are frequent.
ConclusionOverall dystrophic diagnosis can be assessed by radiographic characteristics. Better understanding of the predictive value of specific radiographic features may assist in early diagnosis of patients with dystrophic NF and assist surgeons in identifying dystrophic curve patterns and instituting prompt, appropriate treatment.Level of EvidenceLevel III.
Discussion Scoliosis is a lateral and rotational curvature of the spine from a plumb line hanging from C7 to the floor. Idiopathic scoliosis is the most common form. A review of scoliosis and its differential diagnosis can be found here. Depending on the age, 2-4% of adolescents have a positive Adams Forward Bend Test when assessed and ~2% may have idiopathic scoliosis of> 10 degrees. Curve progression relates to the magnitude of the curve and the patient’s age. Thus increased risk of progression occurs in patients with higher curvature magnitude at diagnosis, females (earlier start of puberty and therefore poss...
Study Design. A retrospective study. Objective. Aim of the study was to investigate morphological differences in the vertebrae of scoliosis secondary to neurofibromatosis type 1 (NF1-S) with and without paraspinal neurofibromas and to identify the relationship between paraspinal neurofibromas and vertebral deformity. Summary of Background Data. Scoliosis is the most common orthopedic manifestation of NF1. Erosion or infiltration of the bone by localized neurofibromas was suggested as one of the primary etiology for the vertebral deformity. Methods. One hundred fourteen patients with NF1-S were classified into spinal tum...
Conclusion. Patients who had undergone PVCR experienced expected higher rate of MNNCs, with an overall prevalence of 22.9%. When considering PVCR, it is important to recognize the significantly higher inherent risks and provide appropriate preoperative counseling on the risks and benefits of surgery. Level of Evidence: 3
Conclusions The use of rib-based distraction is an effective and relatively safe method of stabilizing curve progression through growth in severe dysplastic scoliosis associated with NF-1.