1Egol K A,Koval K J, Kummer F, et al. Stress fractures of the femoral neck [ J ]. Clin Orthop Relat Res, 1998 (348) :72-78.
2Connolly J F, Guse R,Tiedeman J, et al. Autologous marrow injection as a substitute for operative grafting of tibial nonunions[ J]. Clin Orthop Relat Res ,1991 (266) : 259-270.