颗粒型松质骨及骨髓移植巳被成功用于肿瘤切除术后或外伤后颌骨缺损的重建。应用此种技术的关键,是植入高浓度具成骨能力的细胞。Marx和Sanders报道的制备颗粒骨的方法,是将移植骨体积压缩1/2,以增加细胞含量。操作时,将取自髂骨的骨块放入消毒塑料注射器内,然后用针栓压缩,取出时在注射器颈部切开针筒,用针栓将移植骨推出。作者报道一种不切断针筒而取骨的技术,在移植骨放入注射器(3.5 ml)前,把一直径20 mm、厚0.7 mm的消毒不锈钢圆盘放入针 Granular cancellous bone and bone marrow transplantation has been successfully used for tumor resection or reconstruction of traumatic and mandibular defects. The key to applying this technique is the implantation of high-concentration osteogenic cells. The method of preparing granulated bone reported by Marx and Sanders is to compress the volume of the transplanted bone by 1/2 to increase the cell content. During operation, the bone taken from the ilium was placed in a sterilized plastic syringe and then compressed with a needle. When the needle was removed, the needle was cut open at the neck of the syringe and the bone graft was pushed out with a needle. The authors report a technique that does not cut off the cylinder and takes a bone. Prior to inserting the bone graft into the syringe (3.5 ml), place a sterilized stainless steel disk 20 mm in diameter and 0.7 mm in thickness into the needle