BMAC (Bone Marrow Aspirate Concentrate) is a form of biologic treatment using a patient’s own body (concentrated bone marrow sample) to minimize joint pain and inflammation, as well as enhance healing and recovery. It is more involved than PRP, as the harvest site for bone marrow is the posterior superior iliac spine (back of the pelvic bone). After local anaesthesic, a specialized needle is inserted onto the pelvis and bone marrow is aspirated. This is concentrated using a specialized centrifuge to isolate the layer rich in bone marrow and stem cells. This concentrated sample is then injected into the treatment site under ultrasound guidance.