What Shockwave Therapy Is
Extracorporeal shockwave therapy - ESWT - delivers focused acoustic energy through the skin into injured tendon, ligament, or fascia. There is no incision, no anesthesia, no medication. The pulses are felt as a firm tapping sensation through a hand-held applicator, and a typical session takes ten to fifteen minutes.
It is one of the most evidence-supported conservative treatments for chronic, stubborn musculoskeletal pain in the foot and ankle.
How It Works
Chronic tendon and fascia pain is, biologically, stalled healing. The tissue stops actively repairing and settles into a low-grade, painful state.
Shockwave restarts that process by:
- Mechanically disrupting the failed scar tissue at a cellular level.
- Triggering microvascular response - new capillaries grow into the injured zone over the following weeks.
- Releasing growth factors that recruit the body’s own repair cells.
- Modulating local pain signaling so the area becomes less sensitized.
The pain relief is not immediate or pharmaceutical. It is the result of an actual structural change happening over six to twelve weeks following the treatment series.
When Dr. O’Carroll Recommends It
Shockwave is considered when a patient has had pain for more than three months and has not fully responded to first-line conservative care - stretching, orthotics, footwear correction, taping, anti-inflammatories.
The strongest evidence is in:
- Plantar fasciitis that has not resolved with orthotics and stretching.
- Insertional and mid-substance Achilles tendinopathy.
- Chronic heel pain with imaging-confirmed fascia or tendon thickening.
- Selected cases of patellar, hamstring, and posterior tibial tendinopathy at the foot and ankle.
What to Expect
Most patients are scheduled for three to five sessions, one week apart. Each visit is brief. You walk in, you walk out, you go back to work the same day. Mild soreness for twenty-four to forty-eight hours afterward is normal - that is the inflammatory response that drives the repair.
Full benefit is typically assessed at three months. Recent meta-analyses report sixty to eighty percent of patients with chronic plantar fasciitis report significant pain reduction at that mark - a number that compares favorably with surgery, with none of the recovery time.
Why Now
Shockwave is now offered at the Pismo Beach office. For patients who want a real alternative to a cortisone injection cycle or to surgery, this is the next conversation to have.