I am listening the doctors on RRR and they're talking about Extracorporeal shockwave therapy (ESWT).
Given the number of codgers on Seabreeze complaining about various muscular pain and injuries it might be worth taking a look at.
The internet says:
That sound like the treatment I had after a bad off damaged my shoulder. The info at the time said that the damaged area had bad blood flow, the thumps stimulated blood flow and healing. Anyway whatever it was it worked a treat. Fast and effective.