BACKGROUND CONTEXT Recent literature suggests that utilizing two surgeons for spine deformity correction surgery can improve perioperative outcomes. However, the surgeon's experience and surgical volume are likely as important. Our hypothesis is that a highly experienced and/or high volume surgeon does not benefit from a dual surgeon approach. PURPOSE This study seeks to evaluate effect of surgical volume, surgeon experience, and number of surgeons for spine deformity correction through posterior spinal fusion. STUDY DESIGN/SETTING Ambispective chart review. PATIENT SAMPLE Posterior spinal fusion for all spinal deformity patients from 2012 to 2017. OUTCOME MEASURES Estimated blood loss, surgical time, anesthesia time, levels fused, Cobb angle, kyphosis, coronal balance, sagittal balance. METHODS All pediatric spinal deformity patients undergoing spinal deformity surgeon from 2012 to 2017 were included. Patient demographics, XR and perioperative parameters were collected. Surgical cases were collated based on primary surgeon. Analysis was performed for single versus dual attending surgeons, surgical experience ( 10 years), and surgical volume ( 70 cases/year). Median values, Wilcoxon Rank Sums test, Kruskal-Wallis test, and Fisher's exact test were utilized. RESULTS A total of 260 cases, performed by four attendings, had complete records. Two surgeons were highly experienced, one of whom is also high volume. The four cohorts were a highly experienced or high volume surgeon operating alone (n=91), two junior surgeons (n=80), a highly experienced surgeon with a junior surgeon (n=30), and the highly experience and high volume surgeon together (n=26). Preopeartive Cobb (p=.13), kyphosis (p=.61), coronal balance (p=.75) were similar between the groups. Sagittal balance was significantly higher for the highly experienced and high volume surgeon group (p=.011). The high volume surgeon had significantly lower EBL (475 vs. 600 vs. 700 vs. 400cc, p CONCLUSIONS High volume surgeons have better outcomes than dual surgeons, irrespective of the experience of the dual surgeons. High volume surgeons do not benefit from the addition of a second surgeon. FDA DEVICE/DRUG STATUS This abstract does not discuss or include any applicable devices or drugs.