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BACKGROUND CONTEXT Spinal fusion is increasingly considered for management of patients with osteoporosis (OP) and degenerative disc disease (DDD). Little data is available regarding long-term outcomes in OP patients undergoing short-segment, lumbar fusion for DDD. PURPOSE Analyze the impact of OP on long-term outcomes in patients who have had 2-3-level lumbar fusions for degenerative disc disease. STUDY DESIGN/SETTING Retrospective review of the New York State Statewide Planning and Research Cooperative System (NYS SPARCS) database. PATIENT SAMPLE Patients with DDD undergoing 2-3-level lumbar fusion. OUTCOME MEASURES Frequency of 2-year medical and surgical complications and reoperations. METHODS Utilizing SPARCS, all patients from 2009-2011 with ICD-9 codes for DDD who underwent 2-3-level lumbar fusion were identified. Patients with bone mineralization disorders, systemic and endocrine disorders affecting bone quality were excluded. Surgical indications of trauma, systemic disease(s), and infection were excluded. Patients with and without OP were compared for demographics, hospital-related parameters, and 2-year complications and reoperations. Logistic regression models were utilized to identify predictors of complications. RESULTS A total of 29,028 patients (OP=1,353 (4.7%), No-OP=27,675) were included. OP patients were older (66.9 vs 52.6 years) as well as more often female (85.1% vs 48.4%) and white (82.8% vs 73.5%), all p CONCLUSIONS Patients with OP undergoing 2-3-level lumbar fusion for DDD were at higher risk of 2-year medical and surgical complications, and 3.4% of OP patients experienced implant-related complication. These findings highlight the importance of rigorous preoperative metabolic workup prior to spinal surgery. FDA DEVICE/DRUG STATUS This abstract does not discuss or include any applicable devices or drugs.

BACKGROUND CONTEXT Osteoporosis (OP) is a common condition affecting nearly 200 million individuals globally. Similarly, adult spinal deformity has a peak prevalence of 65% of the adult population. While bone health is instrumental in orthopaedic surgery, few studies have described the long-term outcomes of osteoporosis following surgery for ASD. PURPOSE We sought to evaluate the impact of OP on two-year postoperative complication rates when compared to patients without OP. STUDY DESIGN/SETTING Retrospective cohort study. PATIENT SAMPLE Utilizing the New York State Statewide Planning and Research Cooperative System (SPARCS), we identified all patients who underwent ≥4-level fusion with ICD-9 codes diagnostic for ASD (progressive idiopathic scoliosis and degenerative lumbar disease) from 2009-2011 with ≥2-year follow-up. Patients with osteoporosis (OP) and without OR were identified following exclusions. OUTCOME MEASURES Patient demographics, hospital-related parameters, postoperative complications and reoperations. METHODS Using SPARCS, we identified all patients who underwent ≥4-level fusion with ICD-9 codes diagnostic for ASD (progressive idiopathic scoliosis and degenerative lumbar disease) from 2009-2011 for ≥2-year minimum follow-up. Patients with osteoporosis (OP) and without OP were identified. Any patients with bone mineralization disorders (osteomalacia, rickets, hyperparathyroidism [primary, secondary, tertiary], vitamin D deficiency) and other systemic (fibrous dysplasia, sickle cell disease, renal osteodystrophy) and endocrine disorders (thyroid hypo- or hyperfunctioning disorders, adrenal insufficiency, adrenal hyperplastic syndromes) affecting bone quality or production were excluded, as were patients with surgical indications of trauma, systemic disease, infection, or cancer. The two cohorts were compared for demographics, hospital-related parameters, and 2-year postoperative complications and reoperations. Multivariate binary stepwise logistic regressions was utilized to identify significant predictors of these outcomes (covariates: OP, age, sex, race, and Charlson/Deyo). RESULTS A total of 6,132 patients were identified (OP, n=490 (7.99%); No-OP, n=5,642). OP patients were older (67.6 vs 56.7 years), more often female (83.7% vs 46.2%) and white (84.3% vs 79.1%), and had higher comorbidity scores (Charlson/Deyo: 0.72 vs 0.61), all p CONCLUSIONS Osteoporosis was associated with two-year postoperative complications in ASD patients. Aside from being an etiology of ASD due to vertebral fracture, osteoporosis should be considered as a comorbidity that needs to be optimized and managed perioperatively. Furthermore, this data is a call to every spine surgeon to consider metabolic bone disorders screening prior to any spinal deformity surgery. FDA DEVICE/DRUG STATUS This abstract does not discuss or include any applicable devices or drugs.