Introduction:

The prevalence of chronic shoulder pain is 20%, and treatment involves pharmacological and non-pharmacological means, as well as analgesic interventional procedures. The use of intra-articular injections and ultrasound-guided blocks has increased with favorable results, but there are few comparisons to determine their effective use in patients with chronic pain due to shoulder arthrosis refractory to pharmacological treatment.

Objective:

To compare the clinical efficacy and safety of 2 interventional techniques in patients with chronic shoulder pain secondary to arthrosis.

Methods:

Retrospective cohort analytical study to compare the clinical efficacy and safety of 2 interventional techniques in terms of pain relief, improvement time, and adverse effects in patients coming to Instituto Colombiano del Dolor (Colombian Pain Institute) between June 2011 and April 2012, followed during a period of at least 16 weeks.

Results:

The analysis included 62 patients with chronic shoulder pain secondary to osteoarthritis. Suprascapular nerve blocks were performed in 29 patients, and tricompartmental blockade was used in 33 patients, and both procedures were performed under ultrasound guidance. A statistically significant reduction in pain intensity was found during the 16-week period in both groups (P < 0.0001), and there were no complications.

Conclusion:

Both analgesic techniques provided significant pain reduction over the 16-week period, with a superior clinical trend in favor of the suprascapular nerve block, and they were found to be safe therapeutic options because of the low rate of complications.

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