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[ A clinical trial of ultrasound-guided facet joint block in the lumbar spine to treat facet joint related low back pain ] . OBJECTIVE To determine the feasibility and clinical efficacy of ultrasound-guided facet joint injection and nerve block in lumbar facet joint for the treatment of facet-joint related low back pain . METHODS 20 patients with facet-joint pain were randomized into two groups received block blindly ( B group ) or guided by ultrasound ( US group ) respectively . The location of needle tip was confirmed by CT in both groups , and the accuracy was computed afterwards . VAS score , puncture time and one-time puncture success rate ( % ) were recorded . VAS scores and pain remission rates in both groups were recorded at 30 min , 1 d , 2 d , 6 weeks after the block . RESULTS The VAS scores were 3.3 +/- 0.4 in US group and 1.2 +/- 0.3 in B group ( P < 0.05 ) . The puncture time was ( 206 +/- 27 ) s in US group while ( 397 +/- 31 ) s in B group ( P < 0.05 ) . There were 37 facet joint blocks guided by ultrasound , in which 32 were correctly targeted with the first puncture . The success rate is 86.5 % . There were 35 facet joint blocks blindly , in which 11 were correctly targeted with the first puncture . The success rate is 31.4 % . The difference of one-time puncture success rate between the two groups was significant ( P < 0.05 ) . Differences of VAS and pain remission rate at half an hour after facet joint injection between B group and US group were significant ( P < 0.05 ) . There were 8 , 9 , 9 , and 9 patients in US group obtaining a reduction in VAS scores > or = 3 at 30 min , 1 d , 2 d and 6 weeks after the procedure respectively , while the numbers of such patients were 5 , 6 , 5 , 5 in B group ( P > 0.05 ) . After 6 weeks of follow-up , the overall remission rates were ( 72.3 +/- 14.0 ) % in US group , and ( 56.7 +/- 11.0 ) % in B group , there was no significant difference between the two groups ( P > 0.05 ) . CONCLUSION The ultrasound-guided lumbar facet joint injection technique had a high feasibility and accuracy , and had better clinical efficacy than block blindly .
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Intervention_Physical
ultrasound-guided facet joint block
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Intervention_Physical
ultrasound-guided facet joint injection
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Intervention_Physical
nerve block in lumbar facet joint
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Intervention_Physical
facet joint blocks guided by ultrasound
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Intervention_Physical
facet joint blocks blindly
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Intervention_Physical
ultrasound-guided lumbar facet joint injection technique
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Intervention_Physical
block blindly
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Intervention_Pharmacological
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Outcome_Pain
VAS score
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Outcome_Physical
, puncture time and one-time puncture success rate
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Outcome_Pain
VAS scores and pain remission rates
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Outcome_Pain
VAS scores
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Outcome_Other
puncture time
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Outcome_Other
success rate
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Outcome_Other
success rate
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Outcome_Other
one-time puncture success rate
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Outcome_Pain
VAS and pain remission rate
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Outcome_Pain
VAS scores
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Outcome_Pain
overall remission rates
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Participant_Condition
facet joint related low back pain ]
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Participant_Condition
facet-joint related low back pain
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Participant_Sample-size
20
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Participant_Condition
facet-joint pain