Comparison between Steroid Injection and Stretching Exercise on the Scalene of Patients with Upper Extremity Paresthesia: Randomized Cross-Over Study
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Purpose: To compare the therapeutic effects on upper extremity paresthesia of intra-muscular steroid injections into the scalene muscle with those of stretching exercise only. Materials and Methods: Twenty patients with upper extremity paresthesia who met the criteria were recruited to participate in this single-blind, crossover study. Fourteen of 20 patients were female. The average age was 45.0±10.5 years and duration of symptom was 12.2±8.7 months. Each participant completed one injection and daily exercise program for 2 weeks. After randomization,half of all patients received ultrasound-guided injection of scalene muscles before exercise, while the other was invested for the other patients. Results: After two weeks, there was a significant decrease of the visual analog scale score of treatment effect compared with baselinein both groups (6.90 to 2.85 after injection and 5.65 to 4.05 after stretching exercise, p<0.01). However, injection resulted in greater improvements than stretching exercise (p<0.01). The number of patients with successful treatment, defined as >50% reductionin post-treatment visual analog scale, was 18 of 20 (90.0%) after injection, compared to 5 of 20 (25.0%) after stretching exercise. There were no cases of unintended brachial plexus block after injection. Conclusion: Ultrasound-guided steroid injection or stretching exercise of scalene muscles led to reduced upper extremity paresthesiain patients who present with localized tenderness in the scalene muscle without electrodiagnostic test abnormalities, althoughinjection treatment resulted in more improvements. The results suggest that symptoms relief might result from injection into the muscle alone not related to blockade of the brachial plexus.
Abstract
Purpose: To compare the therapeutic effects on upper extremity paresthesia of intra-muscular steroid injections into the scalene muscle with those of stretching exercise only. Materials and Methods: Twenty patients with upper extremity paresthesia who met the criteria were recruited to participate in this single-blind, crossover study. Fourteen of 20 patients were female. The average age was 45.0±10.5 years and duration of symptom was 12.2±8.7 months. Each participant completed one injection and daily exercise program for 2 weeks. After randomization,half of all patients received ultrasound-guided injection of scalene muscles before exercise, while the other was invested for the other patients. Results: After two weeks, there was a significant decrease of the visual analog scale score of treatment effect compared with baselinein both groups (6.90 to 2.85 after injection and 5.65 to 4.05 after stretching exercise, p<0.01). However, injection resulted in greater improvements than stretching exercise (p<0.01). The number of patients with successful treatment, defined as >50% reductionin post-treatment visual analog scale, was 18 of 20 (90.0%) after injection, compared to 5 of 20 (25.0%) after stretching exercise. There were no cases of unintended brachial plexus block after injection. Conclusion: Ultrasound-guided steroid injection or stretching exercise of scalene muscles led to reduced upper extremity paresthesiain patients who present with localized tenderness in the scalene muscle without electrodiagnostic test abnormalities, althoughinjection treatment resulted in more improvements. The results suggest that symptoms relief might result from injection into the muscle alone not related to blockade of the brachial plexus.
참고문헌 (22)
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