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  • Title: The Use of Anterior Lumbosacral Interbody Fusion in Spinopelvic Stabilization After High Partial Sacrectomy.
    Author: Kashlan ON, Monson DK, Refai D.
    Journal: Oper Neurosurg (Hagerstown); 2019 Oct 01; 17(4):E173-E176. PubMed ID: 30629233.
    Abstract:
    BACKGROUND AND IMPORTANCE: Traditionally, when a patient presents with a midline chordoma with extension to the mid-S1 body where neither S1 nerve roots can be spared, the recommendation would be to perform a total sacrectomy for en bloc resection. This procedure, however, results in a large bony defect that makes it difficult to achieve fusion across the lumbosacral and sacroiliac junction (SIJ). To help prevent this challenge in the situation described above, we propose performing a high sacrectomy for en bloc resection with placement of an anterior L5-S1 graft instead in specific situations where the tumor extends to the mid-S1 body leaving the superior aspect of S1 unaffected. CLINICAL PRESENTATION: A 56-yr-old female presented to our clinic with back pain, leg pain, urinary incontinence, and perineal numbness. She was found to have a chordoma that extended to the mid-S1 body superiorly. Her S1 nerve roots were involved extraforaminally. We performed the operation described above with no signs of hardware malfunction or tumor recurrence at 5 mo. CONCLUSION: In patients where the sacral tumor that involves the S1 nerve roots but does not involve the superior portion of the S1 body, there continues to be unaffected SIJ to allow for arthrodesis, and an anterior approach is necessary for other indications, we recommend performing a high partial sacrectomy with placement of an anterior L5-S1 graft rather than a total sacrectomy as long as the bony resection offers ability to obtain tumor margins.
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