A bone graft implant device for treating a tissue site is provided, the device including an implant body including a demineralized allograft bone material portion, and at least one engagement member protruding from the implant body including a mineralized allograft bone material portion. The engagement member may be integrally formed with the implant body, or alternatively, the implant body may include an aperture and the engagement member may be insertable therein. At least one of the amount of demineralization or area of the demineralized allograft bone material portion is adjustable to impart a desired flexibility to the implant body.
