Bone marrow derived stem cells are cells harvested from bone marrow - and have the potential to develop into multiple tissue types.
Bone marrow is commonly harvested from the iliac crest of the hip. Several types of progenitor cell can be derived from bone marrow which can differentiate into almost any kind of mature adult cell, but the ones that are important in regenerative medicine relating to the knee are the mesenchymal stem cells that can mature into tissues such as fat, bone, muscle and cartilage.
Bone marrow derived stem cells in regenerative medicine as Advanced Therapy Medicinal Products. Astori G, Soncin S, Lo Cicero V, Siclari F, Sürder D, Turchetto L, Soldati G and Moccetti T. Am J Transl Res. 2010; 2(3): 285–295.