The orthopaedic sweep carries only an enforcement feed and it returned nothing, which is the norm — drug regulators publish almost nothing orthopaedic surgeons act on, and AAOS, AOSSM, British Orthopaedic Association and Indian Orthopaedic Association documents issued as web pages are outside this sweep entirely. Device advisories, which would be the most relevant regulatory category for this desk, are not covered at all.
What is worth reading in place of a guideline is a study about guidelines. This retrospective cohort used the UK Clinical Practice Research Datalink linked to hospital and death data, covering 476,620 knee, hip and shoulder arthroplasties between 2007 and 2019, and asked whether successive NICE venous thromboembolism guidelines in 2010, 2012 and 2018 changed event rates.
Overall VTE incidence within six months was 1.5% — knee 1.6%, hip 1.4%, shoulder 1.0%. Rates declined over time for hip (p=0.004) and knee (p=0.001) arthroplasty. But introducing the NICE guidelines did not significantly change VTE rates for knee or hip. Only shoulder arthroplasty showed a change, a 9% decrease after the 2018 guidance.
One methodological finding deserves separate attention: more than 30% of VTE events were identified only through the linked primary care data. Any audit relying on hospital records alone is understating its own complication rate by roughly a third.
The uncomfortable implication is that publishing a guideline and changing an outcome are different things, and the assumption that the first produces the second should be tested rather than believed.
- Expect a six-month VTE rate around 1.5% after arthroplasty — 1.6% knee, 1.4% hip, 1.0% shoulder
- Recognise that hospital-only data misses about a third of VTE events; audit against linked records where possible
- Do not assume publishing a guideline changed practice — implementation is the step that was missing here
- Note the coverage gap: device advisories, AAOS, BOA and Indian Orthopaedic Association guidance do not reach this feed
- The observed decline over time preceded and outlasted the guidelines, so other factors were driving it
Read the rest in the app
You have read your two free briefings this month. The app carries all 27 specialties, every morning, free — and this finding is waiting in it.
Scan to keep reading on your phone. No account needed to start.
Tomorrow morning, before your first patient
One edition a day for orthopaedics, written by the desk, every claim tied to its paper. Six minutes.
Get the app — free