Restoring L4-S1 Lordosis Shape in Severe Sagittal Deformity: Impact of Correction Techniques on Alignment and Complication Profile.

dc.contributor.author

Singh, Manjot

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Balmaceno-Criss, Mariah

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Daher, Mohammad

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Lafage, Renaud

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Hamilton, D Kojo

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Smith, Justin S

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Eastlack, Robert K

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Fessler, Richard G

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Gum, Jeffrey L

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Gupta, Munish C

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Hostin, Richard

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Kebaish, Khaled M

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Klineberg, Eric O

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Lewis, Stephen J

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Line, Breton G

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Nunley, Pierce D

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Mundis, Gregory M

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Passias, Peter G

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Protopsaltis, Themistocles S

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Buell, Thomas

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Ames, Christopher P

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Mullin, Jeffrey P

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Soroceanu, Alex

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Scheer, Justin K

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Lenke, Lawrence G

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Bess, Shay

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Shaffrey, Christopher I

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Schwab, Frank J

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Lafage, Virginie

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Burton, Douglas C

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Diebo, Bassel G

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Daniels, Alan H

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International Spine Study Group

dc.date.accessioned

2024-06-19T14:07:10Z

dc.date.available

2024-06-19T14:07:10Z

dc.date.issued

2024-06

dc.description.abstract

Background context

Severe sagittal plane deformity with loss of L4-S1 lordosis is disabling and can be improved through various surgical techniques. However, data is limited on the differing ability of anterior lumbar interbody fusion (ALIF), pedicle subtraction osteotomy (PSO), and transforaminal lumbar interbody fusion (TLIF) to achieve alignment goals in severely malaligned patients.

Purpose

To examine surgical techniques aimed at restoring L4-S1 lordosis in severe adult spinal deformity (ASD).

Design

Retrospective review of prospectively collected data.

Patient sample

A total of 96 patients who underwent ALIF, PSO, and TLIF were included in this study.

Outcome measures

The following data were observed for all cases: patient demographics, spinopelvic parameters, complications, and PROMs.

Methods

Severe ASD patients with preoperative PI-LL >20°, L4-S1 lordosis <30°, and full body radiographs and patient-reported outcome measures (PROMs) at baseline and six-week postoperative visit were included. Patients were grouped into ALIF (1-2 level ALIF at L4-S1), PSO (L4/L5 PSO), and TLIF (1-2 level TLIF at L4-S1). Comparative analyses were performed on demographics, radiographic spinopelvic parameters, complications, and PROMs.

Results

Among the 96 included patients, 40 underwent ALIF, 27 underwent PSO, and 29 underwent TLIF. At baseline, cohorts had comparable age, sex, race, Edmonton frailty scores and radiographic spinopelvic parameters (p>0.05). However, PSO was performed more often in revision cases (p<0.001). Following surgery, L4-S1 lordosis correction (p=0.001) was comparable among ALIF and PSO patients and caudal lordotic apex migration (p=0.044) was highest among ALIF patients. PSO patients had higher intraoperative estimated blood loss (p<0.001) and motor deficits (p=0.049), and in-hospital ICU admission (p=0.022) and blood products given (p=0.004) but were otherwise comparable in terms of length of stay, blood transfusion given, and postoperative admission to rehab. Likewise, 90-day postoperative complication profiles and six-week PROMs were comparable as well.

Conclusions

ALIF can restore L4-S1 sagittal alignment as powerfully as PSO, with fewer intra-operative and in-hospital complications. When feasible, ALIF is a suitable alternative to PSO and likely superior to TLIF for correcting L4-S1 lordosis among patients with severe sagittal malalignment.
dc.identifier

S1878-8750(24)00968-9

dc.identifier.issn

1878-8750

dc.identifier.issn

1878-8769

dc.identifier.uri

https://hdl.handle.net/10161/31200

dc.language

eng

dc.publisher

Elsevier BV

dc.relation.ispartof

World neurosurgery

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10.1016/j.wneu.2024.06.021

dc.rights.uri

https://creativecommons.org/licenses/by-nc/4.0

dc.subject

International Spine Study Group

dc.title

Restoring L4-S1 Lordosis Shape in Severe Sagittal Deformity: Impact of Correction Techniques on Alignment and Complication Profile.

dc.type

Journal article

duke.contributor.orcid

Passias, Peter G|0000-0002-1479-4070|0000-0003-2635-2226

duke.contributor.orcid

Shaffrey, Christopher I|0000-0001-9760-8386

pubs.begin-page

S1878-8750(24)00968-9

pubs.organisational-group

Duke

pubs.organisational-group

School of Medicine

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Clinical Science Departments

pubs.organisational-group

Orthopaedic Surgery

pubs.organisational-group

Neurosurgery

pubs.publication-status

Published

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