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A High Content Imaging Assay for Identification of Botulinum Neurotoxin Inhibitors
Published on: November 14, 2014
Preoperative botulinum neurotoxin A for children with bilateral cerebral palsy undergoing major hip surgery: a
Elspeth Will1, Nicholas Magill2, Rebecca Arnold1
1Evelina London Children's Hospital, London, UK.
Insights
Preoperative botulinum neurotoxin A (BoNT-A) injections did not reduce postoperative pain in children with cerebral palsy (CP) undergoing hip surgery. This study found no significant difference in pain levels between BoNT-A and placebo groups.
Area of Science:
- Orthopedic Surgery
- Pediatric Neurology
- Pain Management
Background:
- Children with cerebral palsy (CP) often experience significant pain after major hip surgery.
- Botulinum neurotoxin A (BoNT-A) is a potential therapeutic agent for muscle spasticity and pain management.
Purpose of the Study:
- To evaluate the efficacy of preoperative botulinum neurotoxin A (BoNT-A) in alleviating postoperative pain in children with CP undergoing major hip surgery.
- To assess the impact of BoNT-A on pain profiles and quality of life post-surgery.
Main Methods:
- A randomized, parallel-arm, placebo-controlled trial was conducted with children aged 2-15 years with hypertonic CP.
- Participants received either BoNT-A or placebo injections into hip muscles immediately before surgery.
- The primary outcome, the pediatric pain profile (PPP), was assessed weekly for 6 weeks. Blinding was maintained for participants, clinicians, and assessors.
Main Results:
- No significant difference in the mean (SD) pediatric pain profile (PPP) at 6 weeks was observed between the BoNT-A group (10.96 [7.22]) and the placebo group (10.04 [8.54]), with a p-value of 0.69.
- Serious adverse events were reported in both groups during the 6-month follow-up period.
- BoNT-A did not demonstrate a reduction in postoperative pain or an improvement in quality of life.
Conclusions:
- Preoperative administration of botulinum neurotoxin A (BoNT-A) is not effective in reducing postoperative pain for children with cerebral palsy undergoing major hip surgery.
- The findings do not support the use of BoNT-A for pain management in this specific surgical context.
Aim:
To assess whether preoperative botulinum neurotoxin A (BoNT-A) affects pain after major hip surgery for children with bilateral cerebral palsy (CP).
Method:
This was a randomized, parallel arms, placebo-contolled trial. Children with hypertonic CP aged 2 to 15 years awaiting bony hip surgery at a tertiary hospital were randomized to receive either BoNT-A or placebo injections into the muscles of the hip on a single occasion immediately before surgery. The primary outcome was the paediatric pain profile (PPP), which was assessed at baseline and weekly for 6 weeks. Treatment allocation was by minimization. Participants, clinicians, and outcome assessors were masked to group assignment.
Results:
Twenty-seven participants (17 males, 10 females; mean 8y 8mo [SD 3y 9mo], range 3y 4mo-15y 10mo) were allocated to BoNT-A and 27 participants (14 males, 13 females; mean 8y 11mo [SD 3y 5mo], range 4y 1mo-15y 2mo) to placebo. Mean (SD) PPP at 6 weeks for the BoNT-A group (n=24 followed up) was 10.96 (7.22) and for the placebo group (n=26) was 10.04 (8.54) (p=0.69; 95% confidence interval [CI] -4.82, 3.18). There were 16 serious adverse events in total during 6 months of follow-up (n=6 in BoNT-A group).
Interpretation:
Use of BoNT-A immediately before bony hip surgery for reducing postoperative pain for children with CP was not supported.
What This Paper Adds:
Botulinum neurotoxin A (BoNT-A) does not reduce postoperative pain following bony hip surgery. BoNT-A also does not affect postoperative quality of life.
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