A phase IIb, randomized, double-blind, multicenter study evaluating the efficacy of botulinum toxin versus placebo on pain and health related quality of life of patients with piriformis muscle syndrome
This study is testing a medication called botulinum toxin (Xeomin) for people who have pain from piriformis muscle syndrome. This condition can cause pain in the buttock and down the leg (sciatica). We want to find out if this injection helps reduce their pain and improve their quality of life. Half the participants will receive the active medicine, and the other half will receive a dummy injection (placebo) that looks identical but contains no active drug. This helps us see if the medicine really works better than no active treatment. We're especially interested in how much the sciatic pain changes after 6 weeks, and we'll also look at buttock pain, general well-being, and side effects over 6 months.
At a glance
What is this study about?
This study is looking into a condition called piriformis muscle syndrome. This happens when a muscle deep in your buttock, called the piriformis, causes pain. This pain can stay in the buttock area or travel down the back of your leg, which is often called sciatica. This can be very uncomfortable and make it hard to do everyday activities.
The study aims to see if an injection of a medicine called botulinum toxin (you might have heard of other types, like Botox, but this one is called Xeomin) can help reduce this pain and improve how people feel overall. The medicine works by temporarily relaxing the piriformis muscle, which might ease the pressure it puts on nerves and reduce pain. We want to understand if this treatment is effective and safe.
To make sure the results are reliable, this study involves two groups. One group will receive the active botulinum toxin injection, and the other group will receive a 'dummy' injection, also known as a placebo. This dummy injection looks exactly the same but doesn't contain any active medicine. Neither you nor your doctor will know which injection you're getting. This helps us accurately compare the real treatment to no active treatment, giving us a clearer picture of whether Xeomin truly helps with piriformis pain.
Key takeaways
- Tests if Xeomin injections can reduce piriformis muscle pain.
- Compares Xeomin to a dummy injection (placebo).
- Focuses on sciatic pain relief after 6 weeks.
- Monitors overall well-being and side effects for 6 months.
- Open to adults aged 18 and over with piriformis syndrome.
Who may be eligible?
This study is looking for adults aged 18 or older. Both men and women are welcome to take part.
To be considered, you must have been diagnosed with piriformis muscle syndrome, causing pain in your buttock and/or down your leg.
There might be other specific reasons why you can or cannot join, related to your overall health or other medicines you are taking. These details would be checked by the study team to make sure it's safe for you to participate.
Could this study suit you?
Answer these quick questions to see if you may be eligible. This is a guide only — the research team makes the final call.
- Are you 18 years old or older?
- Have you been diagnosed with piriformis muscle syndrome?
- Do you experience pain in your buttock or down your leg (sciatica) due to this condition?
- Are you able to attend follow-up appointments over a 6-month period?
What does participation involve?
If you join this study, you will have an initial visit where your pain and general health will be carefully checked. You will then receive a single injection into the piriformis muscle. This injection will either be the active medicine (Xeomin) or a dummy injection (placebo).
Over the next 6 months, you will have several follow-up visits. You'll be asked to answer questions about your pain levels (both sciatic and buttock pain) and how it affects your daily life at certain times, especially at 6 weeks after your injection. We will also check your overall well-being, mood, physical abilities, changes in sitting tolerance, and how many painkillers you use.
During these visits, the study team will also monitor you for any side effects from the injection. Some people might need a second injection if their pain returns after a certain period, and this will also be recorded.
Potential risks and benefits
Locations (1)
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Common questions
What is piriformis muscle syndrome?
It's a condition where a muscle deep in your buttock, called the piriformis, causes pain, sometimes going down your leg (sciatica).
What is Xeomin?
Xeomin is a type of botulinum toxin medicine that can help relax muscles, and in this study, it's being tested to see if it helps with piriformis pain.
What's a 'dummy' injection (placebo)?
It's an injection that looks exactly like the real medicine but contains no active drug. It helps compare the real treatment fairly.
How long will the study last for me?
After your initial visit and injection, you'll be followed for a period of 6 months, with several check-ups during that time.
Will I know if I'm getting the real medicine or the dummy one?
No, neither you nor your study doctor will know which one you receive until after the study has finished. This is to keep the results fair.
How to find out more
Always speak to your GP or specialist before deciding to take part in a study.
Discussion
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