Pity only the abstract is available...
https://www.science.org/doi/10.1126/scitranslmed.add8273
But why do I think this is really about something other than Big Med having a Duh! moment...?
From the abstract...
“...To evaluate the potential of the bursa as a therapeutic target, polymer microspheres loaded with dexamethasone were delivered to the intact bursae of rats after tenotomy. Dexamethasone released from the bursa reduced Il1b expression in injured rat supraspinatus tendon, suggesting that the bursa could be used for drug delivery to reduce inflammation in the healing tendon...”
Not mentioned in abstract, but I’ll betcha stem cells, gene therapy are also being studied.