A2M is a large protein already in your blood. One of its jobs is to trap enzymes that break down cartilage and other tissue. An A2M injection concentrates that protein from your own blood and places it in a joint under ultrasound guidance. It is discussed for joint irritation and early to moderate osteoarthritis, often alongside rehabilitation and load management.

How does it work?
A blood sample is processed so alpha-2-macroglobulin is concentrated, then injected into the joint. The aim is to reduce the enzyme activity that contributes to cartilage wear, not to claim new cartilage on imaging. A2M can be prepared on its own or discussed next to SuperShot, which retains A2M that standard PRP processing often discards.

Often Considered For:
  • Knee, hip, shoulder, and other joint osteoarthritis
  • Joint swelling and activity-related pain when a steroid is not the preferred next step
  • Patients who want an autologous blood-derived option and have reviewed PRP

What Should I Expect?
The pathway matches other orthobiologic visits: diagnosis first, then a prep plan, then a same-day blood draw, processing, and ultrasound-guided injection. Soreness for a few days is typical. A2M is not a joint replacement and it is not a promise to reverse arthritis. We review whether it belongs in the plan or whether PRP, SuperShot, or a non-injection option is the better fit.

Click here to schedule an appointment to see if you are a good candidate for A2M.