A summary diagram of circRNAs in regulating osteoporosis. (A) CircRNAs circ-RUNX2, circ-VANGL1, circ-0011269, circ-0076906, circRNA-0016624, circ-0006393, circRNA-0048211, circ-SLC8A1, circ-YAP1, circ-0076690, and circ-Rtn4 (exosomes) could promote the osteogenesis of BMSCs thereby hindering the progress of osteoporosis. Circ_0026827 could promote the osteogenesis of human dental pulp stem cells (DPSCs) thereby hindering the progress of osteoporosis. CircFOXP1 could promote the osteogenesis of adipose-derived mesenchymal stem cells (ADMSCs) thereby hindering the progress of osteoporosis. (B) While circ-28313 could promote the osteoclastogenesis of bone marrow monocyte /macrophage (BMM) thereby aggravating the progress of osteoporosis.