%0 Journal Article %T Increased serum OPG in atrophic nonunion shaft fractures %A Daniele Marchelli %A Luca P. Piodi %A Costantino Corradini %A Luca Parravicini %A Cesare Verdoia %A Fabio M. Ulivieri %J Journal of Orthopaedics and Traumatology %@ 1590-9999 %D 2009 %I %R 10.1007/s10195-009-0047-5 %X A normal steady state of bone metabolism seems to be present in patients with atrophic nonunion fractures, despite the high serum OPG. The reason for the inability of the patients¡¯ OPG to inhibit osteoclastic activity is unknown. Osteoblast activity also appears normal, so another cellular source of OPG can be hypothesized. %K Bone turnover markers %K Nonunion %K Osteoprotegerin %K Shaft fractures %U http://link.springer.com/article/10.1007/s10195-009-0047-5