Morphine for bladder issues after knee replacement
Treatments studied
Part of Bones, joints & muscles, Kidney & urinary, Pain clinical trials.
This study tests whether adding morphine to spinal anesthesia can reduce trouble urinating after a second knee replacement surgery. It may help you avoid needing a catheter after surgery.
Summary written for real people, not researchers, by Clin2.
Who can take part
- You are having a second knee replacement (not the first one) and it is not due to infection.
- You are 21 or older and generally healthy enough for surgery (ASA class I-III).
- You have no history of alcohol or drug dependence.
- Your BMI is under 45.
- You are not allergic to the medications used (like numbing medicines, painkillers, or sedatives).
- You have not taken strong painkillers (opioids) regularly in the last 2 weeks.
- You are willing to have a nerve block and a small tube for pain medicine near your knee.
- You can speak and understand English.
Quick eligibility check
Answer a few plain-language questions, based on this study's own requirements, to get a preliminary sense of fit.
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