Abstract
Purpose
We analyzed the lumbosacral segmental geometry and clinical outcome in patients undergoing L5 corpectomy.
Methods
Fourteen consecutive patients who underwent L5 (n = 12) or L4 + 5 (n = 2) corpectomy at our department between January 2010 and April 2015 were included. All patients underwent a baseline physical and neurologic examination on admission. The diagnostic routine included MRI and CT scans and, if possible, an upright X-ray of the lumbar spine before and after surgery. The local lordosis angle [L4(L3)-S1] was measured.
Results
The most common pathology was infection (N = 7), followed by neoplastic disease (n = 3), pseudarthrosis (n = 2) after previous spinal fusion procedures and burst fractures (n = 2) of the L5 vertebral body. We observed seven complications (2 intraoperative; 5 postoperative) in five (36%) patients. Three patients needed revision surgery because of cage subsidence and/or dislodgement (21%). Additional anterior plating was used in two of the revision surgeries to secure the cage. Two spondylodiscitis patients (14%) with complications died of sepsis. Of the 12 remaining patients, 8 were available for follow-up.
Conclusion
L5 corpectomy is a technically challenging but feasible procedure even though the overall complication rate can be as high as 36%. The radiologic and clinical outcome seems to be better in patients with a small lordosis angle between L4(L3) and S1, since an angle of >50 degrees seems to facilitate cage dislodgement. Anterior plating should be considered in these cases to prevent implant failure.
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B.M.: Consulting: DepuySynthes, Brainlab, Medtronic, Ulrich, Spineart, Reliviant. Received funding from: DepuySynthes, Brainlab, Medtronic, Ulrich, Reliviant. Royalties/Patent: Ulrich, Spineart.
J.G.: Consulting: BrainLab.
All other authors certify that they have no affiliations with or involvement in any organization or entity with any financial interest (such as honoraria; educational grants; participation in speakers’ bureaus; membership, employment, consultancies, stock ownership or other equity interest; and expert testimony or patent-licensing arrangements) or non-financial interest (such as personal or professional relationships, affiliations, knowledge or beliefs) in the subject matter or materials discussed in this manuscript.
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. For this type of study formal consent is not required.
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Martin Vazan and Yu-Mi Ryang contributed equally to this work.
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Vazan, M., Ryang, YM., Gerhardt, J. et al. L5 corpectomy—the lumbosacral segmental geometry and clinical outcome—a consecutive series of 14 patients and review of the literature. Acta Neurochir 159, 1147–1152 (2017). https://doi.org/10.1007/s00701-017-3084-5
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DOI: https://doi.org/10.1007/s00701-017-3084-5