Shockwave therapy and cortisone injections work through completely different mechanisms, and that difference matters a lot depending on where you are in your injury. Cortisone quiets inflammation. Shockwave restarts the repair process. For chronic tendon problems, shockwave is almost always the better fit.
When Cortisone Makes Sense
Cortisone is genuinely useful for acute inflammatory flare-ups, a fresh bursitis, an acute arthritis episode, post-surgical swelling. In those situations, the goal is to calm the inflammatory response quickly, and cortisone does exactly that. The effect is temporary because cortisone doesn’t repair damaged tissue, but sometimes short-term relief is the right first move.
Where Cortisone Falls Short
Chronic tendinopathy is a different animal. After weeks or months, the tissue moves past the inflammatory phase into a degenerative state, disorganized collagen, poor blood supply, and a healing signal that has essentially gone quiet. Cortisone suppresses symptoms in that state without touching the underlying degeneration, which is why:
- The first injection gives several weeks of relief
- The second gives less
- The third barely registers
- Multiple injections into the same tendon are documented to further weaken the tissue
If you’ve been through that cycle with plantar fasciitis, Achilles tendinopathy, tennis elbow, or rotator cuff pain, you’ve experienced this firsthand.
A Real Example from Our Jacksonville Clinic
A patient came to us after his third cortisone injection for plantar fasciitis in 18 months. The first gave him six weeks of relief. The second, three. The third barely made a difference, and his orthopedist told him more injections weren’t advisable. After five shockwave sessions with us, the morning heel pain that had defined his days for a year and a half was gone. Cortisone had been managing his symptoms. Shockwave changed the underlying condition.
Can You Use Both?
There’s evidence that cortisone administered shortly before shockwave may reduce its effectiveness, it dampens the very inflammatory response that shockwave is designed to initiate. If you’ve had a recent injection, we typically recommend waiting before starting shockwave. How long depends on the site and timing of your injection.