Prolonged opioid use after distal radius fracture

BACKGROUND

Prolonged opioid use (more than 90 days) after injury puts the patient at risk for adverse effects. We investigated the patterns of opioid prescription after distal radius fracture and the effect of pre- and post-fracture factors on the risk for prolonged use.

METHODS

This register-based cohort study uses routinely collected health care data, including purchases of prescription opioids, in the county of Skåne, Sweden. 9369 adult patients with a radius fracture diagnosed 2015-2018 were followed for 1 year after fracture. We calculated proportions of patients with prolonged opioid use, both in total and according to different exposures. Using modified Poisson regression, we calculated adjusted risk ratios for the following exposures: previous opioid use, mental illness, consultation for pain, surgery for distal radius fracture and occupational/physical therapy after fracture.

RESULTS

Prolonged opioid use (4-6 months after fracture) was found in 664 (7.1%) of the patients. A previous, but discontinued, regular use of opioids up to 5 years before fracture increased the risk compared to opioid-naïve patients. Both regular and non-regular opioid use the year before fracture increased the risk. The risk was also higher for patients with mental illness, and those who were treated with surgery, we found no significant effect of pain consultation in previous year. Occupational/physical therapy lowered the risk for prolonged use.

CONCLUSION

Considering history of mental illness and previous opioid use while promoting rehabilitation can be important to prevent prolonged opioid use after distal radius fracture.

SIGNIFICANCE

We show that a common injury such as distal radius fracture can be a gateway to prolonged opioid use, especially among patients with previous history of opioid use or mental illness. Importantly, previous opioid use as far back as 5 years earlier greatly increases the risk of regular use after the reintroduction of opioids. Considering past use is important when planning treatment with opioids. Occupational or physical therapy after injury is associated with lower risk of prolonged use and should be encouraged.

A diagnosis of rheumatoid arthritis, endometriosis or IBD is associated with later onset of fibromyalgia and chronic widespread pain

BACKGROUND

Widespread pain is a common comorbidity in several chronic diseases and is suspected to be caused by pain resulting from the underlying disease that has provoked a state of central sensitization. However, this argument is currently limited by evidence that has insufficiently captured the temporal nature of the relationship between diagnosis of the underlying disease and onset of widespread pain. The aim of this study was to investigate if patients with rheumatoid arthritis (RA), endometriosis or inflammatory bowel disease (IBD), have a higher risk of developing widespread pain (fibromyalgia or chronic widespread pain [CWP]).

METHODS

Using the Swedish Skåne Healthcare register on health care consultation, a cohort of 889,938 adult patients were followed from 2007 to 2016 and incident cases of RA, endometriosis or IBD and of fibromyalgia and CWP were identified by registered diagnoses. Using Poisson regression, we calculated incidence rate ratios (IRR) adjusted for sex, age, education and propensity to seek health care.

RESULTS

For patients with RA the IRR for later fibromyalgia was 3.64 (95% CI: 2.75-4.81) compared to patients without RA, for CWP it was 2.96 (95% CI: 1.81-4.86). For endometriosis patients the IRR for fibromyalgia was 2.83 (95% CI: 1.96-4.08) and for CWP 5.02 (95% CI: 3.10-8.13). IBD patients had an IRR = 2.32 (95% CI: 1.58-3.42) for fibromyalgia and 1.42 (95% CI: 0.93-2.17) for CWP.

CONCLUSIONS

This study shows that RA, endometriosis and IBD are all risk factors for later fibromyalgia and CWP, consistent with a hypothesis of central sensitization as an effect of a painful underlying condition.

SIGNIFICANCE

We show that RA, endometriosis and IBD predisposes for later fibromyalgia and CWP, a common hypothesis previously difficult to verify due to lack of longitudinal data. The results inform further research regarding the aetiology of fibromyalgia and CWP and stress the need of clinical focus on the pain itself in chronic diseases with pain as a symptom.