A comparative study between ultrasound-guided interscalene and ultrasound-guided suprascapular nerve blocks in postoperative pain and hand motor power affection in shoulder scope surgeries

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Abstract

Background
Interscalene approach for brachial plexus block is recognized as the gold standard technique for postoperative pain control after shoulder scope surgeries. However, it is associated with major adverse effects and patient discomfort due to paralysis of the hand muscles. The suprascapular nerve block is considered to be a safe and effective alternative to interscalene nerve block for shoulder surgery without affecting the motor function of the hand muscles and other serious complications of interscalene nerve block, especially in ambulatory surgery.
Results
The findings revealed no statistically significant difference between groups (-value > 0.05) in pain control all over the 24 h by VAS score at rest and at arm flexion. SSNB received a larger total narcotic dose (60 ± 26.02) mg of pethidine than ISB (52 ± 22.73). However, there was no statistical difference between them throughout the 24 h regarding total narcotic consumption and 1st time for pethidine administration. The ISB group showed a statistically significant reduction in the hand power grip strength postoperatively (83.68 ± 4.75%).
Conclusions
The results of the present study favor SSNB as the first choice of pain control after shoulderscopic surgeries for a patient scheduled for early home discharge because of the complete recovery of the hand muscles’ motor power.
Trial registration
This study was registered on PACTR () database; identification number for the registry is PACTR202201840526231.

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