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  • Title: A bioresorbable osteosynthesis device can induce an earlier sternal fusion after median sternotomy.
    Author: Tsunekawa T, Usui A, Oshima H, Mizutani S, Araki Y, Okada N, Ueda Y.
    Journal: Interact Cardiovasc Thorac Surg; 2012 Sep; 15(3):377-81. PubMed ID: 22623628.
    Abstract:
    OBJECTIVES: We examined the impact of the bioresorbable osteosynthesis sternal pin (Super Fixsorb 30) on sternal healing after median sternotomy. METHODS: Sixty-three patients who underwent aortic surgery through median sternotomy between January 2006 and March 2009 were analysed. Sternal pins were utilized in 36 patients in addition to the standard closure of the sternum with Ethibond sutures (Group A), and 27 patients received no pins with the standard Ethibond sternal closure (Group B). The occurrence of transverse sternal dehiscence, anterior-posterior displacement and complete fusion of the sternum were evaluated by a computed tomography scan. The cross-sectional cortical bone density area (CBDA) of the sternum was examined to evaluate the osteoconductivity of the sternal pin over a 12-month period. RESULTS: There was no sternal displacement (0%) observed in Group A at discharge. Meanwhile, five displacements (18.5%) were observed in Group B (P = 0.007). The complete sternal fusion rates at 12 months postoperatively were 100% in Group A, and 21.6% in Group B (P < 0.001). A significant increase in the CBDA was observed in Group A (P < 0.001; between CBDA at discharge and 12 months postoperatively). CONCLUSIONS: The Super Fixsorb 30 sternal pin reduced an anterior-posterior sternal displacement and facilitated an earlier sternal fusion. The pin may have the potential to promote osteogenesis.
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