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  • Title: Iliosacral resections of pelvic malignant tumors and reconstruction with nonvascular bilateral fibular autografts.
    Author: Wang J, Tang Q, Xie X, Yin J, Zhao Z, Li Z, Zou C, Huang G, Shen J.
    Journal: Ann Surg Oncol; 2012 Dec; 19(13):4043-51. PubMed ID: 22948770.
    Abstract:
    BACKGROUND: Iliosacral resection of pelvic malignant tumors and subsequent reconstruction have tested the ingenuity of orthopedic oncologists because of the difficulty of oncological wide resection and the complex biomechanics of the sacroiliac joint render reconstruction challenging. This study compared the functional and surgical outcomes of a biological reconstruction technique with the lack of reconstruction following iliosacral resection. METHODS: Twenty-six consecutive cases with malignant iliac tumors involving the sacrum were retrospectively reviewed. These cases underwent iliosacral resection (type I/IV) followed by no reconstruction or a biological reconstruction blinded to authors between 1997 and 2007. After iliosacral resection, 12 cases underwent reconstruction with nonvascular fibular grafts and plate and/or pedicle screw-rod; the other 14 cases did not undergo reconstruction. RESULTS: The median follow-up was 84.42 (range, 32-165) months. The local recurrence rate in the reconstruction group was 8.33 % (1/12) with 14.29 % (2/14) in the group without reconstruction. The functional score of the biological reconstruction group was significantly higher than that of the no-reconstruction group as determined by Student's t test. In the biological reconstruction group, bone fusion occurred in 91 % of cases and fibula hypertrophy was observed in 41.7 %. Complications included sciatic nerve palsy, broken screws, intractable pain, nonunion, pelvic oblique, and leg-length discrepancy. CONCLUSIONS: After iliosacral resections of pelvic malignant tumors, the biologic reconstruction of these defects could restore spinopelvic stability and continuity. The double-barrel fibular autograft combined with the plate or pedicle screw-rod system is an effective reconstruction method for both optimal short- and long-term stability.
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