Prevention of Residual Low Back Pain After Percutaneous Kyphosis(PKP) Using Posterior Branch Block of Spinal Nerve

Study Overview
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Brief Summary
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The purpose of this study was to block the posterior branch of lumbar spinal nerve during PKP operation and compare it with the patients without spinal nerve block, so as to verify the effect of posterior branch block of spinal nerve in relieving short-term and long-term residual low back pain after operation.

Detailed Description
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Patients older than 60 years old who underwent Percutaneous kyphosis(PKP) surgery for osteoporotic fractures were randomly divided into two groups. The lumbar spinal nerve branch was blocked with betamethasone and ropivacaine in the experimental group during PKP operation, while the lumbar spinal nerve branch block was not performed in the control group during PKP operation. The low back pain was evaluated at 1 week, 2 weeks, 1 month, 3 months and 6 months after operation using Visual analogue pain score(VAS)scale.So as to compare the effect of lumbar spinal nerve block on residual pain after PKP.

Official Title
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Prevention of Residual Low Back Pain After Percutaneous Kyphosis(PKP) Using Posterior Branch Block of Spinal Nerve

Conditions
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Osteoporotic Fracture

Intervention / Treatment
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* Procedure: posterior branch block of spinal nerve


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: osteoporotic fracture acute vertebral compression fracture (within 2 weeks) fracture level lower thanT6 Exclusion Criteria: other types of fractures patients younger than 60 years of age, with other disease (metabolic bone disease, metastasis, uncor- rectable coagulopathy, spinal infection, severe cardiopulmonary comorbidity, cognitive disorders etc)

Ages Eligible for Study
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Minimum Age: 60 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Triple


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: posterior branch block of spinal nerve<br>posterior branch block of spinal nerve during Percutaneous kyphoplasty(PKP)operation | Procedure: posterior branch block of spinal nerve<br>* posterior branch block of spinal nerve during Percutaneous kyphoplasty(PKP) operation<br>|
| No Intervention: without posterior branch block of spinal nerve<br>without posterior branch block of spinal nerve during Percutaneous kyphoplasty(PKP) operation | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Residual low back pain after operation | Residual low back pain after operation using Visual analogue pain score(VAS) scale, VAS scores range from 0 to 10, more higher score means more severe pain, and residual back pain was defined as a VAS score greater than or equal to 4. | 6 months after operation | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Percutaneous kyphoplasty（PKP）, nerve block, posterior branch of spinal nerve