Medicaid Insurance Is Associated With Larger Curves in Patients Who Require Scoliosis Surgery
Children with Medicaid may have difficulty accessing care for adolescent idiopathic scoliosis (AIS), a condition that may worsen with time.
We conducted a study to determine whether patients with Medicaid present with a larger curve magnitude. We reviewed the cases of consecutive AIS patients treated with posterior spinal fusion (PSF) between 2008 and 2012. Children seen for second opinions were excluded. Medical records were evaluated to determine time from evaluation to determination for surgery, time from recommendation for surgery to actual procedure, and insurance status. Radiographs were reviewed to determine Cobb angle at initial presentation.
Of the 135 patients who underwent PSF for newly diagnosed AIS, 39% had Medicaid insurance. Compared with private insurance patients, Medicaid patients presented with a larger mean (SD) Cobb angle, 57.2° (15.7°) versus 47.5° (14.3°) (P < .001), and had larger curves at time of surgery, 60.6° (13.9°) versus 54.6° (11.7°) (P = .008). There was no difference in wait time from the decision to undergo surgery to the actual surgery or in mean (SD) number of levels fused, 10.3 (2.2) for Medicaid patients versus 9.7 (2.3) for private insurance patients (P = .16).
Compared with private insurance patients, Medicaid patients who underwent PSF for AIS had larger presenting Cobb angles and larger Cobb angles at time of surgery.
The disparity in curve magnitudes among patients with and without private insurance is striking and probably multifactorial. Very likely, the combination of schools with limited screening programs within urban or rural school systems,17 restricted access to pediatricians,18,19 and longer waits to see orthopedic specialists20 all contribute to this disparity. It should be noted that school screening is mandatory in our state. This discrepancy may be related to a previously established tendency in minority populations toward waiting longer to seek care and refusing surgical recommendations, though we were unable to query socioeconomic factors such as race and household income.21,22 It is clearly important to increase access to care for underinsured patients with scoliosis. A comprehensive approach, including providing better education in the schools, establishing communication with referring primary care providers, and increasing access through more physicians or physician extenders, is likely needed. Orthopedists should perhaps treat scoliosis evaluation with the same sense of urgency given to minor fractures, and primary care providers should try to ensure that appropriate referrals for scoliosis are made. Also curious was the shorter travel distance for Medicaid patients versus private insurance patients in this study. We hypothesize this is related to our urban location and its large Medicaid population.
Our study had several limitations. Our electronic medical records (EMR) system does not store data related to the time a patient calls for an initial appointment, limiting our ability to determine how long patients waited for their initial consultation. Furthermore, the decision to undergo surgery is multifactorial and cannot be simplified into time from initial recommendation to surgery, as some patients delay surgery because of school or other obligations. These data should be reasonably consistent over time, as patients seen in the early spring in both groups may delay surgery until the summer, and those diagnosed in June may prefer earlier surgery.
Summary
Children with AIS are at risk for curve progression. Therefore, delays in providing timely care may result in worsening scoliosis. Compared with private insurance patients, Medicaid patients presented with larger curve magnitudes. Further study is needed to better delineate ways to improve care access for patients with scoliosis in communities with larger Medicaid populations.
