Stem cells potentially offer a novel therapeutic platform to treat bone disease. They also help the scientist understand the molecular and cellular aetiology of bone disorders. Gaining knowledge on the nature and application of stem cell sciences is a prerequisite for understanding their potential in treating or preventing bone disorders. Coverage includes general aspects of stems cells, sources of stems cells, isolation and purification, applications in regeneration, nanoscale topography, myostatin (GDF-8) signalling, c-Jun, Lnk, cell-derived Factor 1/CXCR4, chromatin remodelling, osteoporosis, osteoarthritis, hypophosphatasia, osteopetrosis, osteogenesis, and many other areas of merit too numerous to mention.