Resistance band training after triamcinolone acetonide injection for subacromial bursitis: A randomized clinical trial.
Pengfei Zhu, Bokai Liao, Zhengchao Wang and 3 others
PMID 33043381WHAT IT FOUND
Adding 9 weeks of resistance band training to a steroid injection kept shoulder pain and function improved for six months.
Injection alone worked for three weeks, then pain returned. The band training group also needed far fewer repeat treatments.
Key findings
01At 24 weeks, the injection-only group's pain score had returned to near baseline, while the group adding band training maintained significant improvement.
02By one year, 82.9% of the injection-only patients required further treatment, compared with 12.1% of those who also did band training.
03Range of motion, proprioception, and muscle strength improved in both groups at 3 weeks, but only the band training group sustained these gains through 24 weeks.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTs
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What it does not show
The study did not include a placebo injection or a sham exercise group, so the natural course of the condition or the effect of attention cannot be fully separated from the specific interventions. Resistance band tension is difficult to quantify precisely, and the authors noted that selecting the appropriate band level is subjective and variable. The follow-up for the primary outcomes was 24 weeks, with only a telephone survey for re-treatment rates at one year, so long-term physiological outcomes beyond six months are not detailed. Patients with diabetes, rheumatoid arthritis, or other systemic inflammatory conditions were excluded, so results may not generalize to these populations.
Declared interests
The authors declare no conflicts of interest. No specific funding source is mentioned in the provided text, though the study was conducted at a hospital affiliated with a medical university.
The easy way to misread this
Do not interpret the 3-week results as evidence that the injection alone is sufficient. Both groups improved equally at 3 weeks, but the injection-only group relapsed significantly by 24 weeks, whereas the group adding band training maintained improvement.