FIG. 7.

Representative histology 8 weeks post surgery. H&E-stained specimen from the empty group at low magnification (A), in the femoral neck canal (B), and in the femoral region (C). H&E-stained specimens from the CS/HA (D–F), CS/HA + ZA (G–I), and CS/HA + ZA + rhBMP-2 (J–L) groups. (D, G, and J) A low-magnification overview of the samples. (E, H, and K) Bone formation in the femoral neck canal. (F, I, and L) Bone formation in the femoral region. The arrows in (A, D, G and J) point at the point of entry of the drill bit in the cortex. *Bone formation. #Remnants of the CS/HA material in the form of HA particles. ZA, zoledronic acid; rhBMP, recombinant human bone morphogenic protein-2; H&E, hematoxylin and eosin. Color images available online at www.liebertpub.com/tea