A bone graft composition includes a biologically-resorbable cement and a plurality of processed bone particles, where each of the bone particles have a shape configured to interconnect with adjacent bone particles. A method for treating a bone defect using the bone graft compositions includes providing the bone graft composition and administering an effective amount of the bone graft composition to a site of a bone defect in a subject. Kits including a biologically-resorbable cement powder and a plurality of processed bone particles are also provided.