Fig. (6).

(A) A photograph showing distal femur with two defects. The most distal defect (arrow) was filled with 75 to 53 µm allograft particles. The defect is largely filled with yellowish amorphous material. The proximal defect (arrow) has been filled with 250 to 125 µm particles. It has healed. (B) A radiograph of the same specimen shows an unhealed distal defect (arrow) and healed proximal defect (arrow). (C) A histologic section of the distal defect. The defect is filled with acellular material and granulation tissue in the periphery (Statin, hematoxylin and eosin; original magnification, x35). (D) A histologic section from the center of the proximal defect. Newly formed bone is similar to that shown in Fig. (5) (Stain, hematoxylin and eosin; original magnification, x 100).