RIA Bone Graft Filter
The reamer-irrigator-aspirator (RIA) is indicated for the treatment of acute fractures in preparation for acceptance of a nail or prosthesis and for harvesting intramedullary reamings for bone grafting. It should not be used in patients with severe osteopenia.
The RIA provides irrigation and aspiration during reaming, which allows for single-pass reaming and has been shown to reduce intramedullary pressure. Normal saline irrigation flows through the drive shaft and reamer head into the medullary canal. When coupled with adequate suction, the irrigation mixes with the morselized medullary content which is then evacuated through the aspiration tube. RIA mandates a suction device. The procedure has to be abandoned if suction does not work.
RIA also harvests finely morselized autogenous bone and bone marrow for any surgical procedure which requires bone graft to facilitate fusion and/or fill bone defects. A bone graft filter is used with a capacity of 100 cc's. An inner mesh with 0.5 mm pore size captures morselized bone and bone marrow. A plunger can be used to compress and expel the captured graft material. The graft filter is a disposable, single use item which comes sterile packed.
Experience with RIA show a low morbidity, reduced postoperative pain, and a larger volume of obtained graft material compared to traditional iliac crest method.
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