Fibromyalgia Increases Post-operative Healthcare Utilization Following total Hip Arthroplasty.

Background: Preoperative factors can complicate the postoperative course and increase health care utilization following total hip arthroplasty (THA). Fibromyalgia is not generally recognized as a modifiable risk factor prior to THA. The aim of this investigation was to assess the effect of fibromyalgia on postoperative health care utilization following THA.

Methods: Patients who underwent primary THA from 2018 to 2019 were identified from a large national database using Current Procedural Terminology and International Classification of Diseases, tenth revision (International Classification of Diseases-10) codes. Patient demographics, age, sex, and preoperative opioid use were collected. Analysis compared patients who did and did not have fibromyalgia for postoperative health care utilization metrics; lengths of stay (LOS), 90-day postoperative opioid usages, dislocations, and emergency room visits. Independent t-tests were used to compare LOS and rates of ongoing opioid use. Logistic regression analyses with adjusted odds ratios evaluated the risk of dislocation and emergency room visit after adjusting for demographic characteristics and comorbidities.

Results: Compared to those who did not have fibromyalgia, patients who had fibromyalgia experienced longer LOS (P < .0001), increased odds of opioid use 90 days postoperatively (P < .0001) as well as increased odds of hip dislocation (P < .0001) and presentation to the emergency room (P < .0001). Patients who had fibromyalgia were also more likely to be "frequent flyers" with ≥5 emergency room visits after THA (P < .0001).

Conclusions: Fibromyalgia can complicate postoperative care following THA with increased LOS, higher rates of opioid use, and increased odds of dislocation and emergency room visits. As focus shifts to preoperative optimization and risk stratification, more attention should be placed on fibromyalgia prior to THA.