Plain-English translation of NCT04031820 on ClinicalTrials.gov ↗ · Source last updated · Translation generated · How we translate trials
This study doesn't follow the usual testing phases — it may be an observational study or a different type of research.
This trial compares two different types of artificial hip cups used during hip replacement surgery. One is a newer dual-mobility cup (developed in France in the 1970s) designed to be more stable and reduce the chance that the hip pops out of place after surgery. The other is a standard, single-part cup that has been used for many years. Researchers want to see if the dual-mobility cup works better at preventing this dislocation problem.
Hip dislocation—when the artificial hip slips out of its socket—is the most common reason patients need a second surgery after hip replacement. This treatment was developed to address that problem, but doctors don't yet have strong evidence showing whether it actually prevents dislocations better than standard cups, or whether it's worth the extra cost.
You likely qualify if…
You likely don't qualify if…
If you qualify, you will be randomly assigned to receive one of the two hip cup types during your scheduled hip replacement surgery. You will then return for follow-up visits at 1 and 2 years after surgery, where doctors will check how well your hip is working and ask you questions about your pain, function, and quality of life. Researchers will also track information from your medical records to see if you had any complications like dislocation or needed a second surgery.
AI-generated summary from trial data · Jun 18, 2026 · Not medical advice
Netherlands