外傷性多発肋骨骨折に対する吸収性骨接合剤（u-HA/PLLA複合体）を用いた修復術

Surgical Stabilization of Traumatic Multiple Rib Fractures Using Absorbable Osteosynthesis Agent （u-HA/PLLA Composite Material）

多発肋骨骨折に対する手術はフレイルチェストに対するものに加え，疼痛管理および遅発性血気胸などのリスク軽減を目的に行われる．その有効性について一定の評価はあるものの1，2），確立された手術適応基準はなく，さまざまな素材や方法による修復術が施設ごとの判断でなされている．

In case that met several indication criteria with 4 or more rib fractures, we performed surgical stabilization of multiple fractured ribs using a plate and screw system （Super FIXORB MX） that was made of uncalcined hydroxyapatite （u-HA）/poly-L-lactic acid （PLLA） composite material with excellent bioactivity and absorbability. We report our clinical experience of 7 cases in which this device was used. Although there is still room for further consideration of the technique and the strength of the device itself, computed tomography （CT） images taken 9 months after surgery showed that the fixative device was almost assimilated with the bone at the fracture repair site in cases where fixation was successful.