Increased Opioid Use in Patients With Ehlers-Danlos Syndrome Before and After Total Hip Arthroplasty.

BACKGROUND: Ehlers-Danlos syndrome (EDS), a disorder affecting synthesis of collagen, typically presents with chronic pain, hypermobility, and early osteoarthritis. EDS patients undergoing total hip arthroplasty (THA) are at risk of dislocation and revision. Opioid use and impact on outcomes among this population remain unknown.

METHODS: A retrospective review was performed with a large national database querying the International Classification of Disease, tenth revision procedure codes identifying 1,244,368 primary THAs from 2015-2020. Two hundred thirty-eight EDS patients underwent THA and were propensity matched with population control based on age, sex, and obesity when comparing opioid prescription. To compare dislocation and revision outcomes, EDS patients were stratified into those receiving opioid prescriptions and those not. Multivariate analysis evaluated the association.

RESULTS: EDS patients were more likely prescribed opioids 90 days before (49.1% vs 34.7.0%, P < .0001) and after THA (59.7% vs 41.2%, P < .0001), with more preoperatively (1163.6 mme ±1562.8, P < .0001) and postoperatively (900.1 mme ±1235.9, P < .0001) than controls. In EDS patients prescribed opioids 90 days before THA, dislocation rate was 12.8% vs 7.1% not prescribed (odds ratio 2.08, 95% confidence interval 0.85-5.1). 14.8% of EDS patients who received opioids 90 days after THA dislocated vs 2.1% not prescribed (odds ratio 8.13, 95% confidence interval 1.87-35.7).

CONCLUSIONS: EDS patients are more likely prescribed opioids before and after THA. Opioid prescription was associated with risk of dislocation, though we caution interpretation of causation. However, this suggests that the risks of worse outcomes in EDS patients undergoing THA are multifactorial. We should look at strategies to reduce opioid use prior to THA.