Do I need physical therapy after a cortisone shot?

What does a cortisone shot do, and what does it leave unchanged?

A cortisone shot puts a steroid, usually mixed with a local anesthetic, into or around a painful joint, bursa or tendon sheath. OrthoInfo explains that the anesthetic gives quick relief, the steroid takes a few days to kick in, and the effect can last several weeks as it calms inflammation in the area.

What it does not change is why the area became irritated. A shoulder that pinches because the rotator cuff is weak, or a knee that aches because the thigh muscles cannot absorb load, has the same mechanics after the shot as before. OrthoInfo is direct about it: the injection manages pain but does not address the underlying cause.

Why are the weeks after an injection a good time for rehab?

Pain limits how well you can exercise. When a joint is very painful, strengthening work is hard to do and hard to progress, so people stall. A shot that lowers pain for a few weeks can open a window in which a therapist can load the area properly and make real changes to strength and movement.

If that window passes with no change, the pain often returns as the steroid fades, and the next step is another shot. OrthoInfo notes doctors commonly cap cortisone at three to four injections per year, partly because repeated steroid exposure can harm cartilage and tendons, so each one is worth using well.

A sensible plan agrees on what the window is for. For a painful shoulder that might be regaining overhead reach and building rotator cuff endurance; for an arthritic knee, getting up from a low chair and managing stairs. Writing down two or three goals before the shot wears off makes it easier to judge, a few weeks later, whether the combination worked or a different approach is needed.

How soon after a cortisone shot can physical therapy start?

Many people can start within days, but your injecting physician sets the timing. A common instruction is to rest the area for a day or two and avoid heavy use, and OrthoInfo notes a temporary flare, where pain is worse for a day or two before the steroid takes effect, can happen.

Once that settles, a therapist usually begins with movement and moderate strengthening, then builds load. Extra care is taken around tendons, because OrthoInfo warns that cortisone can raise the chance of a tendon rupture, especially at the biceps, patellar and Achilles tendons. If you have diabetes, expect blood sugar readings to run higher for a few days and check with your doctor about managing that.

Lower pain can also hide how irritable the tissue still is. A shoulder or knee that suddenly feels years younger is tempting to test with a heavy session, a long tennis match or a weekend of yard work, but the underlying weakness has not changed yet. Building up gradually, even when the area feels much better than it did before the shot, is what keeps the gain from turning into a setback.

Which problems most often pair a cortisone shot with physical therapy?

The pairing is most common where a strength or movement problem sits underneath the inflammation. Your physician and therapist decide together whether a shot is appropriate; the list below shows where people often meet both.

• Shoulder impingement and rotator cuff irritation, where the shot calms pain so cuff and shoulder blade strengthening can progress
• Frozen shoulder, where an early shot may ease the painful phase while range of motion work continues
• Knee osteoarthritis, where a few weeks of lower pain make quadriceps strengthening easier
• Hip bursitis, where the shot eases side-lying pain and hip strengthening addresses the load on the outer hip
• Trigger finger, where injection is a common first step and hand exercises may follow

Should I choose a shot or physical therapy first?

That depends on how severe the pain is and how much it limits exercise. Many physicians start with physical therapy and add a shot only if pain blocks progress; others use the shot first when pain is severe. Our comparison of cortisone shots and physical therapy looks at the trade-offs in more depth.

If you have already had the shot, the practical step is to book therapy soon so the relief is not wasted. Start the two-minute questionnaire and mention the injection date; the matching team looks for a therapist in the network whose schedule fits yours; the suites at Carmel City Center open at 5 AM on weekdays, though each therapist sets their own hours.