Effective Prevention of Proximal Junctional Failure in Adult Spinal Deformity Surgery Requires a Combination of Surgical Implant Prophylaxis and Avoidance of Sagittal Alignment Overcorrection.

dc.contributor.author

Line, Breton G

dc.contributor.author

Bess, Shay

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Lafage, Renaud

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Lafage, Virgine

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Schwab, Frank

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Ames, Christopher

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Kim, Han Jo

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Kelly, Michael

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Gupta, Munish

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Burton, Douglas

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Hart, Robert

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Klineberg, Eric

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Kebaish, Khaled

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Hostin, Richard

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Mundis, Gregory

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Eastlack, Robert

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Shaffrey, Christopher

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Smith, Justin S

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International Spine Study Group

dc.date.accessioned

2023-06-20T12:12:14Z

dc.date.available

2023-06-20T12:12:14Z

dc.date.issued

2020-02

dc.date.updated

2023-06-20T12:12:12Z

dc.description.abstract

Study design

Propensity score matched analysis of a multi-center prospective adult spinal deformity (ASD) database.

Objective

Evaluate if surgical implant prophylaxis combined with avoidance of sagittal overcorrection more effectively prevents proximal junctional failure (PJF) than use of surgical implants alone.

Summary of background data

PJF is a severe form of proximal junctional kyphosis (PJK). Efforts to prevent PJF have focused on use of surgical implants. Less information exists on avoidance of overcorrection of age-adjusted sagittal alignment to prevent PJF.

Methods

Surgically treated ASD patients (age ≥18 yrs; ≥5 levels fused, ≥1 year follow-up) enrolled into a prospective multi-center ASD database were propensity score matched (PSM) to control for risk factors for PJF. Patients evaluated for use of surgical implants to prevent PJF (IMPLANT) versus no implant prophylaxis (NONE), and categorized by the type of implant used (CEMENT, HOOK, TETHER). Postoperative sagittal alignment was evaluated for overcorrection of age-adjusted sagittal alignment (OVER) versus within sagittal parameters (ALIGN). Incidence of PJF was evaluated at minimum 1 year postop.

Results

Six hundred twenty five of 834 eligible for study inclusion were evaluated. Following PSM to control for confounding variables, analysis demonstrated the incidence of PJF was lower for IMPLANT (n = 235; 10.6%) versus NONE (n = 390: 20.3%; P < 0.05). Use of transverse process hooks at the upper instrumented vertebra (HOOK; n = 115) had the lowest rate of PJF (7.0%) versus NONE (20.3%; P < 0.05). ALIGN (n = 246) had lower incidence of PJF than OVER (n = 379; 12.0% vs. 19.2%, respectively; P < 0.05). The combination of ALIGN-IMPLANT further reduced PJF rates (n = 81; 9.9%), while OVER-NONE had the highest rate of PJF (n = 225; 24.2%; P < 0.05).

Conclusion

Propensity score matched analysis of 625 ASD patients demonstrated use of surgical implants alone to prevent PJF was less effective than combining implants with avoidance of sagittal overcorrection. Patients that received no PJF implant prophylaxis and had sagittal overcorrection had the highest incidence of PJF.

Level of evidence

3.
dc.identifier

00007632-202002150-00010

dc.identifier.issn

0362-2436

dc.identifier.issn

1528-1159

dc.identifier.uri

https://hdl.handle.net/10161/28162

dc.language

eng

dc.publisher

Ovid Technologies (Wolters Kluwer Health)

dc.relation.ispartof

Spine

dc.relation.isversionof

10.1097/brs.0000000000003249

dc.subject

International Spine Study Group

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Humans

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Kyphosis

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Postoperative Complications

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Bone Cements

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Treatment Outcome

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Combined Modality Therapy

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Neurosurgical Procedures

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Spinal Fusion

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Reoperation

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Risk Factors

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Retrospective Studies

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Follow-Up Studies

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Prospective Studies

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Prostheses and Implants

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Databases, Factual

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Adolescent

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Adult

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Aged

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Aged, 80 and over

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Middle Aged

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Female

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Male

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Young Adult

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Propensity Score

dc.title

Effective Prevention of Proximal Junctional Failure in Adult Spinal Deformity Surgery Requires a Combination of Surgical Implant Prophylaxis and Avoidance of Sagittal Alignment Overcorrection.

dc.type

Journal article

duke.contributor.orcid

Shaffrey, Christopher|0000-0001-9760-8386

pubs.begin-page

258

pubs.end-page

267

pubs.issue

4

pubs.organisational-group

Duke

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School of Medicine

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Clinical Science Departments

pubs.organisational-group

Orthopaedic Surgery

pubs.organisational-group

Neurosurgery

pubs.publication-status

Published

pubs.volume

45

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