Main experiments were performed using bone marrow obtained from the femoral head at the time of surgery for total hip replacement of seven patients with osteoarthritis (six males and one female. Median age 77 years, range [59–82]) and six healthy donors suffering traumatic subcapital fracture (one male and five females. Median age 82 years, range [64–92]), OA diagnosis was established according to the American College of Rheumatology criteria.
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