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Histological examination of the 6-month specimens. More woven bone formation (wide arrows) was identified in the bone–screw construct in the AMD screw group. The tendon graft (line arrow) is shown between the screw and bone in the control group (A,B). The bone and screw were in close contact in the AMD screw group (C,D); B: bone, T: tendon, and S: screw.
