Kumar VV, et al. - This study was designed not only to assess primary and secondary implant stability values of implants placed into healed free fibula–reconstructed mandibles but also to examine whether a correlation existed between primary implant stability and the quantity of cortical bone–implant contact and of cortical fibular bone in contact with the implants. No differences were observed in primary and secondary implant stability quotients (ISQ) values of implants placed into the fibula. Findings revealed that implant stability quotients associated positively with cortical bone-to-implant contact (CBIC).