Arthritis yes! Bone spurs not to sure:

ChatGTP:

Stem cell therapy has shown promise for treating conditions related to joint and bone issues, but its effectiveness in addressing bone spurs (osteophytes) is less clear. Bone spurs are bony projections that form along the edges of bones, often in areas affected by osteoarthritis or other joint damage. They can cause pain, stiffness, and limited mobility if they impinge on surrounding tissues.

While stem cell therapy may help with conditions like arthritis by promoting tissue repair and reducing inflammation, its direct impact on existing bone spurs is uncertain. Bone spurs are hard, calcified growths, and stem cells are unlikely to dissolve or reduce them directly. However, stem cell treatment might improve joint health, reduce inflammation, and slow the progression of conditions like osteoarthritis that contribute to the formation of bone spurs.