Hirata T, Fukuse T, Mizuno H, Hitomi S, Wada H
Department of Thoracic Surgery, Faculty of Medicine, Kyoto University, Japan.
Thorac Cardiovasc Surg. 1999 Jun;47(3):183-7. doi: 10.1055/s-2007-1013138.
To assess the usefulness in rib reconstruction of biodegradable connecting pins made of polylactide (PLA), PLA rib pins were compared with conventional non-absorbent aluminous ceramic rib pins (alumina rib pins) in terms of their ability for fixing and healing of cut ribs in thoracic surgery.
There were 13 cases of rib fixation after thoracotomy using PLA rib pins and 11 cases using alumina rib pins, all of which were inserted into the medulla of the stump of the ribs that had been cut at thoracotomy to secure a larger surgical field. The observation period was 6 months after the operation.
The degree of vertical shift of the ribs connected with PLA rib pins was significantly reduced compared with the degree using alumina rib pins. In chest radiographs clear zones around the pins, indicating a delay in bone neogenesis, were observed frequently around the alumina rib pins but were absent around the PLA rib pins. Osteosynthesis using PLA rib pins was significantly more favorable than with alumina rib pins.
These results demonstrated that the PLA rib pin was superior to the alumina rib pin for fixing and healing of the cut rib.
为评估聚乳酸（PLA）制成的可生物降解连接销在肋骨重建中的效用，将PLA肋骨销与传统的不可吸收铝质陶瓷肋骨销（氧化铝肋骨销）在胸外科手术中对切断肋骨的固定和愈合能力方面进行了比较。
开胸术后使用PLA肋骨销进行肋骨固定的有13例，使用氧化铝肋骨销的有11例，所有这些销均插入开胸时切断的肋骨残端髓腔中以确保更大的手术视野。观察期为术后6个月。
与使用氧化铝肋骨销相比，使用PLA肋骨销连接的肋骨垂直移位程度明显降低。在胸部X光片中，在氧化铝肋骨销周围经常观察到销周围的透明区，表明骨新生延迟，但在PLA肋骨销周围未观察到。使用PLA肋骨销进行骨合成明显比使用氧化铝肋骨销更有利。
这些结果表明，PLA肋骨销在切断肋骨的固定和愈合方面优于氧化铝肋骨销。
