Patients' own adult stem cells show great potential in regenerative medicine, including orthopedic applications. Stem cells isolated from bone marrow can enable bone and cartilage to heal. Once removed, the patients' cells are processed and allowed to multiply in tissue culture. Then they are injected back into the knee joint of the same patient. The meniscus of the knee can be repaired, despite its poor blood supply. Preliminary studies show that many patients with osteoarthritis might be able to avoid a total knee replacement with this therapy... 
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