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Kim AH, Hostin RA, Yeramaneni S, Gum JL, Nayak P, Line BG, Bess S, Passias PG, Hamilton DK, Gupta MC, Smith JS, Lafage R, Diebo BG, Lafage V, Klineberg EO, Daniels AH, Protopsaltis TS, Schwab FJ, Shaffrey CI, Ames CP, Burton DC, Kebaish KM. Thoracolumbar fusions for adult lumbar deformity show superior QALY gain and lower costs compared with upper thoracic fusions. Spine Deform 2024:10.1007/s43390-024-00919-7. [PMID: 39090432 DOI: 10.1007/s43390-024-00919-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Accepted: 06/09/2024] [Indexed: 08/04/2024]
Abstract
PURPOSE Adult spinal deformity (ASD) patients with sagittal plane deformity (N) or structural lumbar/thoraco-lumbar (TL) curves can be treated with fusions stopping at the TL junction or extending to the upper thoracic (UT) spine. This study evaluates the impact on cost/cumulative quality-adjusted life year (QALY) in patients treated with TL vs UT fusion. METHODS ASD patients with > 4-level fusion and 2-year follow-up were included. Index and total episode-of-care costs were estimated using average itemized direct costs obtained from hospital records. Cumulative QALY gained were calculated from preoperative to 2-year postoperative change in Short Form Six-Dimension (SF-6D) scores. The TL and UT groups comprised patients with upper instrumented vertebrae (UIV) at T9-T12 and T2-T5, respectively. RESULTS Of 566 patients with type N or L curves, mean age was 63.2 ± 12.1 years, 72% were female and 93% Caucasians. Patients in the TL group had better sagittal vertical axis (7.3 ± 6.9 vs. 9.2 ± 8.1 cm, p = 0.01), lower surgical invasiveness (- 30; p < 0.001), and shorter OR time (- 35 min; p = 0.01). Index and total costs were 20% lower in the TL than in the UT group (p < 0.001). Cost/QALY was 65% lower (492,174.6 vs. 963,391.4), and 2-year QALY gain was 40% higher, in the TL than UT group (0.15 vs. 0.10; p = 0.02). Multivariate model showed TL fusions had lower total cost (p = 0.001) and higher QALY gain (p = 0.03) than UT fusions. CONCLUSION In Schwab type N or L curves, TL fusions showed lower 2-year cost and improved QALY gain without increased reoperation rates or length of stay than UT fusions. LEVEL OF EVIDENCE III.
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Affiliation(s)
- Andrew H Kim
- Department of Orthopaedic Surgery, The Johns Hopkins University, 601 N Caroline St. 5th Floor, Baltimore, MD, 21205, USA
| | - Richard A Hostin
- Department of Orthopaedic Surgery, Baylor Scoliosis Center, Plano, TX, USA
| | - Samrat Yeramaneni
- Department of Orthopaedic Surgery, Baylor Scoliosis Center, Plano, TX, USA
| | | | - Pratibha Nayak
- Department of Orthopaedic Surgery, Baylor Scoliosis Center, Plano, TX, USA
| | - Breton G Line
- Denver International Spine Center, Rocky Mountain Hospital for Children and Presbyterian St. Luke's Medical Center, Denver, CO, USA
| | - Shay Bess
- Denver International Spine Center, Rocky Mountain Hospital for Children and Presbyterian St. Luke's Medical Center, Denver, CO, USA
| | - Peter G Passias
- Department of Orthopaedic Surgery, NYU Hospital for Joint Diseases, New York, NY, USA
| | - D Kojo Hamilton
- Department of Neurological Surgery, University of Pittsburgh, Pittsburgh, PA, USA
| | - Munish C Gupta
- Department of Orthopedic Surgery, Washington University, St. Louis, MO, USA
| | - Justin S Smith
- Department of Neurosurgery, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Renaud Lafage
- Department of Orthopedic Surgery, Hospital for Special Surgery, New York, NY, USA
| | - Bassel G Diebo
- Department of Orthopedic Surgery, Warren Alpert Medical School, Brown University, Providence, RI, USA
| | - Virginie Lafage
- Department of Orthopedic Surgery, Lenox Hill Hospital, New York, NY, USA
| | - Eric O Klineberg
- Department of Orthopedic Surgery, McGovern Medical School, University of Texas Health, Houston, TX, USA
| | - Alan H Daniels
- Department of Orthopedic Surgery, Warren Alpert Medical School, Brown University, Providence, RI, USA
| | | | - Frank J Schwab
- Department of Orthopedic Surgery, Lenox Hill Hospital, New York, NY, USA
| | - Christopher I Shaffrey
- Department of Neurosurgery and Orthopedic Surgery, Duke University School of Medicine, Durham, NC, USA
| | - Christopher P Ames
- Department of Neurosurgery, University of California San Francisco School of Medicine, San Francisco, CA, USA
| | - Douglas C Burton
- Department of Orthopedic Surgery, University of Kansas School of Medicine, Kansas City, KS, USA
| | - Khaled M Kebaish
- Department of Orthopaedic Surgery, The Johns Hopkins University, 601 N Caroline St. 5th Floor, Baltimore, MD, 21205, USA.
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Kumar RP, Adida S, Lavadi RS, Mitha R, Legarreta AD, Hudson JS, Shah M, Diebo B, Fields DP, Buell TJ, Hamilton DK, Daniels AH, Agarwal N. A guide to selecting upper thoracic versus lower thoracic uppermost instrumented vertebra in adult spinal deformity correction. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2024; 33:2742-2750. [PMID: 38522054 DOI: 10.1007/s00586-024-08206-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 01/26/2024] [Accepted: 02/24/2024] [Indexed: 03/25/2024]
Abstract
PURPOSE Operative treatment of adult spinal deformity (ASD) has been shown to improve patient health-related quality of life (HRQOL). Selection of the uppermost instrumented vertebra (UIV) in either the upper thoracic (UT) or lower thoracic (LT) spine is a pivotal decision with effects on operative and postoperative outcomes. This review overviews the multifaceted decision-making process for UIV selection in ASD correction. METHODS PubMed was queried for articles using the keywords "uppermost instrumented vertebra", "upper thoracic", "lower thoracic", and "adult spinal deformity". RESULTS Optimization of UIV selection may lead to superior deformity correction, better patient-reported outcomes, and lower risk of proximal junctional kyphosis (PJK) and failure (PJF). Patient alignment characteristics, including preoperative thoracic kyphosis, coronal deformity, and the magnitude of sagittal correction influence surgical decision-making when selecting a UIV, while comorbidities such as poor body mass index, osteoporosis, and neuromuscular pathology should also be taken in to account. Additionally, surgeon experience and resources available to the hospital may also play a role in this decision. Currently, it is incompletely understood whether postoperative HRQOLs, functional and radiographic outcomes, and complications after surgery differ between selection of the UIV in either the UT or LT spine. CONCLUSION The correct selection of the UIV in surgical planning is a challenging task, which requires attention to preoperative alignment, patient comorbidities, clinical characteristics, available resources, and surgeon-specific factors such as experience.
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Affiliation(s)
- Rohit Prem Kumar
- Department of Neurological Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Samuel Adida
- Department of Neurological Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Raj Swaroop Lavadi
- Department of Neurological Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Rida Mitha
- Department of Neurological Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Andrew D Legarreta
- Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Joseph S Hudson
- Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Manan Shah
- Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Bassel Diebo
- Department of Orthopaedic Surgery, Warren Alpert School of Medicine, Brown University, Providence, RI, USA
| | - Daryl P Fields
- Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Thomas J Buell
- Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - D Kojo Hamilton
- Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Alan H Daniels
- Department of Orthopaedic Surgery, Warren Alpert School of Medicine, Brown University, Providence, RI, USA
| | - Nitin Agarwal
- Department of Neurological Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
- Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, USA.
- Neurological Surgery, Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, PA, USA.
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Lafage R, Kim HJ, Eastlack RK, Daniels AH, Diebo BG, Mundis G, Khalifé M, Smith JS, Bess SR, Shaffrey CI, Ames CP, Burton DC, Gupta MC, Klineberg EO, Schwab FJ, Lafage V. Revision Strategy for Proximal Junctional Failure: Combined Effect of Proximal Extension and Focal Correction. Global Spine J 2024:21925682241254805. [PMID: 38736317 DOI: 10.1177/21925682241254805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/14/2024] Open
Abstract
STUDY DESIGN Retrospective review of a prospectively-collected multicenter database. OBJECTIVES The objective of this study was to determine optimal strategies in terms of focal angular correction and length of proximal extension during revision for PJF. METHODS 134 patients requiring proximal extension for PJF were analyzed in this study. The correlation between amount of proximal junctional angle (PJA) reduction and recurrence of proximal junctional kyphosis (PJK) and/or PJF was investigated. Following stratification by the degree of PJK correction and the numbers of levels extended proximally, rates of radiographic PJK (PJA >28° & ΔPJA >22°), and recurrent surgery for PJF were reported. RESULTS Before revision, mean PJA was 27.6° ± 14.6°. Mean number of levels extended was 6.0 ± 3.3. Average PJA reduction was 18.8° ± 18.9°. A correlation between the degree of PJA reduction and rate of recurrent PJK was observed (r = -.222). Recurrent radiographic PJK (0%) and clinical PJF (4.5%) were rare in patients undergoing extension ≥8 levels, regardless of angular correction. Patients with small reductions (<5°) and small extensions (<4 levels) experienced moderate rates of recurrent PJK (19.1%) and PJF (9.5%). Patients with large reductions (>30°) and extensions <8 levels had the highest rate of recurrent PJK (31.8%) and PJF (16.0%). CONCLUSION While the degree of focal PJK correction must be determined by the treating surgeon based upon clinical goals, recurrent PJK may be minimized by limiting reduction to <30°. If larger PJA correction is required, more extensive proximal fusion constructs may mitigate recurrent PJK/PJF rates.
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Affiliation(s)
- Renaud Lafage
- Department of Orthopedic Surgery, Northwell Health, Lenox Hill Hospital, New York, NY, USA
| | - Han-Jo Kim
- Department of Orthopedic Surgery, Hospital for Special Surgery, New York, NY, USA
| | - Robert K Eastlack
- Department of Orthopedic Surgery, Scripps Clinic Torrey Pines, La Jolla, CA, USA
| | - Alan H Daniels
- Department of Orthopaedic Surgery, University Orthopedics, Providence, RI, USA
| | - Bassel G Diebo
- Department of Orthopaedic Surgery, University Orthopedics, Providence, RI, USA
| | - Greg Mundis
- San Diego Spine Foundation, San Diego, CA, USA
| | - Marc Khalifé
- Department of Orthopedic Surgery, Northwell Health, Lenox Hill Hospital, New York, NY, USA
- Department of Orthopedic Surgery, Hôpital Européen Georges Pompidou, Paris, France
| | - Justin S Smith
- Department of Neurosurgery, University of Virginia Medical Center, Charlottesville, VA, USA
| | - Shay R Bess
- Department of Orthopaedic Surgery, Denver International Spine Center, Denver, CO, USA
| | | | - Christopher P Ames
- Department of Neurosurgery, University of California San Francisco Spine Center, San Francisco, CA, USA
| | - Douglas C Burton
- Department of Orthopaedic Surgery, University of Kansas Medical Center, Kansas City, KS, USA
| | - Munish C Gupta
- Department of Orthopaedic Surgery, Washington University School of Medicine, St. Louis, MO, USA
| | - Eric O Klineberg
- Department of Orthopaedic Surgery, University of California Davis Medical Center, Sacramento, CA, USA
| | - Frank J Schwab
- Department of Orthopedic Surgery, Northwell Health, Lenox Hill Hospital, New York, NY, USA
| | - Virginie Lafage
- Department of Orthopedic Surgery, Northwell Health, Lenox Hill Hospital, New York, NY, USA
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Haldeman PB, Ward SR, Osorio J, Shahidi B. An evidence based conceptual framework for the multifactorial understanding of proximal junctional kyphosis. BRAIN & SPINE 2024; 4:102807. [PMID: 38712018 PMCID: PMC11070827 DOI: 10.1016/j.bas.2024.102807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 02/22/2024] [Accepted: 04/04/2024] [Indexed: 05/08/2024]
Abstract
Introduction Adult spinal deformity (ASD) is a debilitating pathology that arises from a variety of etiologies. Spinal fusion surgery is the mainstay of treatment for those who do not achieve symptom relief with conservative interventions. Fusion surgery can be complicated by a secondary deformity termed proximal junctional kyphosis (PJK). Research question This scoping review evaluates the modern body of literature analyzing risk factors for PJK development and organizes these factors according to a multifactorial framework based on mechanical, tissue or demographic components. Materials and methods An extensive search of the literature was performed in PubMed and Embase back to the year 2010. Articles were assessed for quality. All risk factors that were evaluated and those that significantly predicted the development of PJK were compiled. The frequency that a risk factor was predictive compared to the number of times it was evaluated was calculated. Results 150 articles were reviewed. 57.3% of papers were of low quality. 76% of risk factors analyzed were focusing on the mechanical contribution to development of PJK versus only 5% were focusing on the tissue-based contribution. Risk factors that were most frequently predictive compared to how often they were analyzed were Hounsfield Units of vertebrae, UIV disc degeneration, paraspinal muscle cross sectional area and fatty infiltration, ligament augmentation, instrument characteristics, postoperative hip and lower extremity radiographic metrics, and postoperative teriparatide supplementation. Discussion and conclusion This review finds a multifactorial framework accounting for mechanical, patient and tissue-based risk factors will improve the understanding of PJK development.
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Affiliation(s)
| | - Samuel R. Ward
- Department of Orthopaedic Surgery, UC San Diego, La Jolla, CA, USA
| | - Joseph Osorio
- Department of Neurological Surgery, UC San Diego, La Jolla, CA, USA
| | - Bahar Shahidi
- Department of Orthopaedic Surgery, UC San Diego, La Jolla, CA, USA
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Lovecchio F, Lafage R, Sheikh Alshabab B, Shah S, Punyala A, Ang B, Akosman I, Charles Elysee J, Lafage V, Schwab F, Kim HJ. Can Discharge Radiographs Predict Junctional Complications? A Decision Tree Analysis. Global Spine J 2024; 14:970-977. [PMID: 36194520 PMCID: PMC11192123 DOI: 10.1177/21925682221131765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
STUDY DESIGN Retrospective cohort study. OBJECTIVES To determine if standing pre-discharge radiographs can predict the development of junctional complications. MATERIALS AND METHODS Adult spinal deformity patients who underwent fusion of the lumbar spine (≥5 levels, LIV pelvis) were included. All patients underwent full-length standing radiographs before hospital discharge. Outcomes of interest included 2-year radiographic PJK and proximal junctional failure (PJF). Patients were stratified into 3 exclusive groups: No PJK, PJK, and PJF. Chi-square automatic interaction detection (CHAID) decision tree analysis was utilized to identify pre-discharge proximal junctional angle (PJA) thresholds associated with increased risk of PJK or PJF. RESULTS The 117 study patients had a mean age 65.8 ± 8.5, BMI 27.2 ± 4.9, PI-LL 23.3 ± 17.4, TPA 27.2 ± 11.5. Sample was stratified into 64 (54.7%) No PJK, 39 (33.3%) PJK, 14 (12.0%) PJF. No differences were detected between cohorts in discharge alignment, preop-discharge change, or offset from age-adjusted alignment targets (P > .005). Decision tree analysis showed that the first branch point depended on the UIV, as most patients with an UT UIV did not develop PJK or PJF (no PJK, 67.4%). For patients with an LT UIV, a second branch point occurred based on the ΔPJA. 89.5% of LT patients with a ΔPJA < 4.3° were free of radiographic PJK and PJF. The third branch point occurred based on the PJA at discharge. Thus, the highest risk group was comprised of ΔPJA ≥4.3° and PJA > 15.5°, as 57.1% of developed PJF and 28.6% PJK. CONCLUSION Most patients with a lower thoracic UIV, preop-discharge ΔPJA ≥4.3°, and discharge PJA > 15.5° develop PJF.
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Affiliation(s)
- Francis Lovecchio
- Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA
| | - Renaud Lafage
- Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA
| | | | - Sachin Shah
- Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA
| | - Ananth Punyala
- Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA
| | - Bryan Ang
- Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA
| | - Izzet Akosman
- Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA
| | | | - Virginie Lafage
- Department of Orthopaedic Surgery, Lenox Hill Hospital, New York, NY, USA
| | - Frank Schwab
- Department of Orthopaedic Surgery, Lenox Hill Hospital, New York, NY, USA
| | - Han Jo Kim
- Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA
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6
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Takami M, Kawakami M, Hashizume H, Tsutsui S, Oka H, Shinozaki T, Iwasaki H, Yamada H. Psychometric Evaluation and External Validity of the Japanese Version of Lumbar Stiffness Disability Index. Spine Surg Relat Res 2022; 6:696-703. [PMID: 36561157 PMCID: PMC9747221 DOI: 10.22603/ssrr.2022-0066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Accepted: 04/25/2022] [Indexed: 02/01/2023] Open
Abstract
Introduction Long fusion surgery for adult spinal deformity may restrict activities of daily living due to lumbar stiffness. While the Lumbar Stiffness Disability Index (LSDI) can help assess lumbar stiffness, in Asia the external validity of this questionnaire has not been sufficiently examined. We performed the psychometric evaluation and external validation of the Japanese version of the LSDI (LSDI-J). Methods Fifty consecutive patients (14 males and 36 females; mean age 70.6 years) who underwent lumbar fusion surgery at our institution a minimum of one year after surgery and who visited the outpatient clinic between April and May 2019, were surveyed using the LSDI-J. The mean number of fusion levels was 4.4. Cronbach's alpha coefficients were calculated for internal consistency, and the intraclass correlation coefficient (ICC) was calculated to evaluate reliability. External validity was assessed by comparisons with the Oswestry Disability Index (ODI), the Japanese Orthopaedic Association Back Pain Evaluation Questionnaire (JOABPEQ), and the lumbar range of motion (LROM) with LSDI-J scores. Results Cronbach's alpha coefficient was 0.652 overall, and 0.849 after excluding Question 10 due to a low response rate. The ICC was 0.824 overall and 0.851 after excluding Question 10. The correlation with the ODI was 0.684, and the correlation coefficients with each domain of the JOABPEQ ranged from -0.590 to -0.413, indicating moderate correlation. However, LROM and the LSDI-J were not correlated (r=-0.055, P=0.734). Conclusions The LSDI-J may not be suitable in Japan because there was no correlation with LROM, the most important factor for external validity. It may be necessary to investigate why the LSDI-J did not apply to the Japanese population in terms of lower limb function. Alternatively, a unique method may be needed to assess lumbar stiffness disability that is more suitable for actual clinical practice in Japan.
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Affiliation(s)
- Masanari Takami
- Department of Orthopaedic Surgery, Wakayama Medical University, Wakayama, Japan
| | - Mamoru Kawakami
- Department of Orthopaedic Surgery, Saiseikai Wakayama Hospital, Wakayama, Japan
| | - Hiroshi Hashizume
- Department of Orthopaedic Surgery, Wakayama Medical University, Wakayama, Japan
| | - Shunji Tsutsui
- Department of Orthopaedic Surgery, Wakayama Medical University, Wakayama, Japan
| | - Hiroyuki Oka
- Department of Medical Research and Management for Musculoskeletal Pain, The University of Tokyo, Tokyo, Japan
| | - Tomohiro Shinozaki
- Department of Information and Computer Technology, Faculty of Engineering, Tokyo University of Science, Tokyo, Japan
| | - Hiroshi Iwasaki
- Department of Orthopaedic Surgery, Wakayama Medical University, Wakayama, Japan
| | - Hiroshi Yamada
- Department of Orthopaedic Surgery, Wakayama Medical University, Wakayama, Japan
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7
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Buell TJ, Shaffrey CI, Kim HJ, Klineberg EO, Lafage V, Lafage R, Protopsaltis TS, Passias PG, Mundis GM, Eastlack RK, Deviren V, Kelly MP, Daniels AH, Gum JL, Soroceanu A, Hamilton DK, Gupta MC, Burton DC, Hostin RA, Kebaish KM, Hart RA, Schwab FJ, Bess S, Ames CP, Smith JS. Global coronal decompensation and adult spinal deformity surgery: comparison of upper-thoracic versus lower-thoracic proximal fixation for long fusions. J Neurosurg Spine 2021; 35:761-773. [PMID: 34450577 DOI: 10.3171/2021.2.spine201938] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 02/15/2021] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Deterioration of global coronal alignment (GCA) may be associated with worse outcomes after adult spinal deformity (ASD) surgery. The impact of fusion length and upper instrumented vertebra (UIV) selection on patients with this complication is unclear. The authors' objective was to compare outcomes between long sacropelvic fusion with upper-thoracic (UT) UIV and those with lower-thoracic (LT) UIV in patients with worsening GCA ≥ 1 cm. METHODS This was a retrospective analysis of a prospective multicenter database of consecutive ASD patients. Index operations involved instrumented fusion from sacropelvis to thoracic spine. Global coronal deterioration was defined as worsening GCA ≥ 1 cm from preoperation to 2-year follow-up. RESULTS Of 875 potentially eligible patients, 560 (64%) had complete 2-year follow-up data, of which 144 (25.7%) demonstrated worse GCA at 2-year postoperative follow-up (35.4% of UT patients vs 64.6% of LT patients). At baseline, UT patients were younger (61.6 ± 9.9 vs 64.5 ± 8.6 years, p = 0.008), a greater percentage of UT patients had osteoporosis (35.3% vs 16.1%, p = 0.009), and UT patients had worse scoliosis (51.9° ± 22.5° vs 32.5° ± 16.3°, p < 0.001). Index operations were comparable, except UT patients had longer fusions (16.4 ± 0.9 vs 9.7 ± 1.2 levels, p < 0.001) and operative duration (8.6 ± 3.2 vs 7.6 ± 3.0 hours, p = 0.023). At 2-year follow-up, global coronal deterioration averaged 2.7 ± 1.4 cm (1.9 to 4.6 cm, p < 0.001), scoliosis improved (39.3° ± 20.8° to 18.0° ± 14.8°, p < 0.001), and sagittal spinopelvic alignment improved significantly in all patients. UT patients maintained smaller positive C7 sagittal vertical axis (2.7 ± 5.7 vs 4.7 ± 5.7 cm, p = 0.014). Postoperative 2-year health-related quality of life (HRQL) significantly improved from baseline for all patients. HRQL comparisons demonstrated that UT patients had worse Scoliosis Research Society-22r (SRS-22r) Activity (3.2 ± 1.0 vs 3.6 ± 0.8, p = 0.040) and SRS-22r Satisfaction (3.9 ± 1.1 vs 4.3 ± 0.8, p = 0.021) scores. Also, fewer UT patients improved by ≥ 1 minimal clinically important difference in numerical rating scale scores for leg pain (41.3% vs 62.7%, p = 0.020). Comparable percentages of UT and LT patients had complications (208 total, including 53 reoperations, 77 major complications, and 78 minor complications), but the percentage of reoperated patients was higher among UT patients (35.3% vs 18.3%, p = 0.023). UT patients had higher reoperation rates of rod fracture (13.7% vs 2.2%, p = 0.006) and pseudarthrosis (7.8% vs 1.1%, p = 0.006) but not proximal junctional kyphosis (9.8% vs 8.6%, p = 0.810). CONCLUSIONS In ASD patients with worse 2-year GCA after long sacropelvic fusion, UT UIV was associated with worse 2-year HRQL compared with LT UIV. This may suggest that residual global coronal malalignment is clinically less tolerated in ASD patients with longer fusion to the proximal thoracic spine. These results may inform operative planning and improve patient counseling.
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Affiliation(s)
- Thomas J Buell
- 1Department of Neurological Surgery, Duke University Medical Center, Durham, North Carolina
| | - Christopher I Shaffrey
- 1Department of Neurological Surgery, Duke University Medical Center, Durham, North Carolina
| | - Han Jo Kim
- 2Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York
| | - Eric O Klineberg
- 3Department of Orthopaedic Surgery, University of California, Davis, California
| | - Virginie Lafage
- 2Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York
| | - Renaud Lafage
- 2Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York
| | | | - Peter G Passias
- 4Department of Orthopaedic Surgery, NYU Hospital for Joint Diseases, New York, New York
| | - Gregory M Mundis
- 5Department of Orthopaedic Surgery, Scripps Clinic and San Diego Spine Foundation, La Jolla, California
| | - Robert K Eastlack
- 5Department of Orthopaedic Surgery, Scripps Clinic and San Diego Spine Foundation, La Jolla, California
| | - Vedat Deviren
- 6Department of Orthopaedic Surgery, University of California, San Francisco, California
| | - Michael P Kelly
- 7Department of Orthopaedic Surgery, Washington University, St. Louis, Missouri
| | - Alan H Daniels
- 8Department of Orthopaedic Surgery, Brown University, Providence, Rhode Island
| | - Jeffrey L Gum
- 9Department of Orthopaedic Surgery, Norton Leatherman Spine Center, Louisville, Kentucky
| | - Alex Soroceanu
- 10Department of Orthopaedic Surgery, University of Calgary, Calgary, Alberta, Canada
| | - D Kojo Hamilton
- 11Department of Neurological Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Munish C Gupta
- 7Department of Orthopaedic Surgery, Washington University, St. Louis, Missouri
| | - Douglas C Burton
- 12Department of Orthopaedic Surgery, University of Kansas Medical Center, Kansas City, Kansas
| | - Richard A Hostin
- 13Department of Orthopaedic Surgery, Southwest Scoliosis Institute, Baylor Scott and White Medical Center, Plano, Texas
| | - Khaled M Kebaish
- 14Department of Orthopaedic Surgery, Johns Hopkins University, Baltimore, Maryland
| | - Robert A Hart
- 15Department of Orthopaedic Surgery, Swedish Neuroscience Institute, Seattle, Washington
| | - Frank J Schwab
- 2Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York
| | - Shay Bess
- 16Denver International Spine Center, Presbyterian/St. Luke's Medical Center and Rocky Mountain Hospital for Children, Denver, Colorado
| | - Christopher P Ames
- 17Department of Neurological Surgery, University of California, San Francisco, California
| | - Justin S Smith
- 18Department of Neurological Surgery, University of Virginia Health System, Charlottesville, Virginia
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Tariciotti L, Palmisciano P, Giordano M, Remoli G, Lacorte E, Bertani G, Locatelli M, Dimeco F, Caccavella VM, Prada F. Artificial intelligence-enhanced intraoperative neurosurgical workflow: state of the art and future perspectives. J Neurosurg Sci 2021; 66:139-150. [PMID: 34545735 DOI: 10.23736/s0390-5616.21.05483-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Artificial Intelligence (AI) and Machine Learning (ML) augment decision-making processes and productivity by supporting surgeons over a range of clinical activities: from diagnosis and preoperative planning to intraoperative surgical assistance. We reviewed the literature to identify current AI platforms applied to neurosurgical perioperative and intraoperative settings and describe their role in multiple subspecialties. METHODS A systematic review of the literature was conducted following the PRISMA guidelines. PubMed, EMBASE, and Scopus databases were searched from inception to December 31, 2020. Original articles were included if they: presented AI platforms implemented in perioperative, intraoperative settings and reported ML models' performance metrics. Due to the heterogeneity in neurosurgical applications, a qualitative synthesis was deemed appropriate. The risk of bias and applicability of predicted outcomes were assessed using the PROBAST tool. RESULTS 41 articles were included. All studies evaluated a supervised learning algorithm. A total of 10 ML models were described; the most frequent were neural networks (n = 15) and tree-based models (n = 13). Overall, the risk of bias was medium-high, but applicability was considered positive for all studies. Articles were grouped into 4 categories according to the subspecialty of interest: neuro-oncology, spine, functional and other. For each category, different prediction tasks were identified. CONCLUSIONS In this review, we summarize the state-of-art applications of AI for the intraoperative augmentation of neurosurgical workflows across multiple subspecialties. ML models may boost surgical team performances by reducing human errors and providing patient-tailored surgical plans, but further and higher-quality studies need to be conducted.
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Affiliation(s)
- Leonardo Tariciotti
- Unit of Neurosurgery, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy.,Department of Oncology and Hemato-Oncology, University of Milan, Milan, Italy.,NEVRALIS, Milan, Italy
| | - Paolo Palmisciano
- NEVRALIS, Milan, Italy.,Department of Neurosurgery, Trauma, Gamma Knife Center Cannizzaro Hospital, Catania, Italy
| | - Martina Giordano
- NEVRALIS, Milan, Italy.,Department of Neurosurgery, Fondazione Policlinico Universitario A Gemelli IRCCS, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Giulia Remoli
- NEVRALIS, Milan, Italy.,National Center for Disease Prevention and Health Promotion, Italian National Institute of Health, Rome, Italy
| | - Eleonora Lacorte
- National Center for Disease Prevention and Health Promotion, Italian National Institute of Health, Rome, Italy
| | - Giulio Bertani
- Unit of Neurosurgery, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Marco Locatelli
- Unit of Neurosurgery, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy.,Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy.,Aldo Ravelli Research Center for Neurotechnology and Experimental Brain Therapeutics, University of Milan, Milan, Italy
| | - Francesco Dimeco
- Department of Neurosurgery, Fondazione IRCCS Istituto Neurologico C. Besta, Milan, Italy
| | - Valerio M Caccavella
- NEVRALIS, Milan, Italy - .,Department of Neurosurgery, Fondazione Policlinico Universitario A Gemelli IRCCS, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Francesco Prada
- Department of Neurosurgery, Fondazione IRCCS Istituto Neurologico C. Besta, Milan, Italy.,Department of Neurological Surgery, University of Virginia Health Science Center, Charlottesville, VA, USA
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Haddad AF, Scheer JK, Fury MT, Smith JS, Deviren V, Ames CP. Incidence of Chronic Periscapular Pain After Adult Thoracolumbar Deformity Correction and Impact on Outcomes. Neurospine 2021; 18:515-523. [PMID: 34610684 PMCID: PMC8497237 DOI: 10.14245/ns.2040576.288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 02/23/2021] [Accepted: 02/26/2021] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE Extension of the posterior upper-most instrumented vertebra (UIV) into the upper thoracic (UT) spine allows for greater deformity correction and reduced incidence of proximal junction kyphosis (PJK) in adult spinal deformity (ASD) patients. However, it may be associated with chronic postoperative scapular pain (POSP). The goal of this study was to assess the relationship between UT UIV and persistent POSP, describe the pain, and assess its impact on patient disability. METHODS ASD patients who underwent multilevel posterior fusion were retrospectively identified then administered a survey regarding scapular pain and the Oswestry Disability Index (ODI), by telephone. Univariate and multivariate analysis were utilized. RESULTS A total of 74 ASD patients were included in the study: 37 patients with chronic POSP and 37 without scapular pain. The mean age was 70.5 years, and 63.9% were women. There were no significant differences in clinical characteristics, including mechanical complications (PJK, pseudarthrosis, and rod fracture) or reoperation between groups. Patients with persistent POSP were more likely to have a UT than a lower thoracic UIV (p = 0.018). UT UIV was independently associated with chronic POSP on multivariate analysis (p = 0.022). ODI score was significantly higher in patients with scapular pain (p = 0.001). Chronic POSP (p = 0.001) and prior spine surgery (p = 0.037) were independently associated with ODI on multivariate analysis. CONCLUSION A UT UIV is independently associated with increased odds of chronic POSP, and this pain is associated with significant increases in patient disability. It is a significant clinical problem despite solid radiographic fusion and the absence of PJK.
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Affiliation(s)
- Alexander F. Haddad
- Department of Neurological Surgery, University of California, San Francisco, San Francisco, CA, USA
| | - Justin K. Scheer
- Department of Neurological Surgery, University of California, San Francisco, San Francisco, CA, USA
| | - Marissa T. Fury
- Department of Neurological Surgery, University of California, San Francisco, San Francisco, CA, USA
| | - Justin S. Smith
- Department of Neurosurgery, University of Virginia, Charlottesville, VA, USA
| | - Vedat Deviren
- Department of Orthopedic Surgery, University of California, San Francisco, San Francisco, CA, USA
| | - Christopher P. Ames
- Department of Neurological Surgery, University of California, San Francisco, San Francisco, CA, USA
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10
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Balestrino A, Gondar R, Jannelli G, Zona G, Tessitore E. Surgical challenges in posterior cervicothoracic junction instrumentation. Neurosurg Rev 2021; 44:3447-3458. [PMID: 33754193 DOI: 10.1007/s10143-021-01520-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 02/08/2021] [Accepted: 03/08/2021] [Indexed: 10/21/2022]
Abstract
The cervicothoracic junction (CTJ) is a region of the spine submitted to significant mechanical stress. The peculiar anatomical and biomechanical characteristics make posterior surgical stabilization of this area particularly challenging. We present and discuss our surgical series highlighting the specific surgical challenges provided by this region of the spine. We have analyzed and reported retrospective data from patients who underwent a posterior cervicothoracic instrumentation between 2011 and 2019 at the Neurosurgical Department of the Geneva University Hospitals. We have discussed C7 and Th1 instrumentation techniques, rods design, extension of constructs, and spinal navigation. Thirty-six patients were enrolled. We have preferentially used lateral mass (LM) screws in the subaxial spine and pedicle screws (PS) in C7, Th1, and upper thoracic spine. We have found no superiority of 3D navigation techniques over 2D fluoroscopy guidance in PS placement accuracy, probably due to the relatively small case series. Surgical site infection was the most frequent complication, significantly associated with tumor as diagnosis. When technically feasible, PS represent the technique of choice for C7 and Th1 instrumentation although other safe techniques are available. Different rod constructs are described although significant differences in biomechanical stability still need to be clarified. Spinal navigation should be used whenever available even though 2D fluoroscopy is still a safe option. Posterior instrumentation of the CTJ is a challenging procedure, but with correct surgical planning and technique, it is safe and effective.
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Affiliation(s)
- Alberto Balestrino
- Department of Neurosurgery, Ospedale Policlinico San Martino, Largo Rosanna Benzi 10, 16132, Genoa, Italy. .,Division of Neurosurgery, Department of Neurosciences (DINOGMI), IRCCS San Martino Polyclinic Hospital, Largo Rosanna Benzi 10, 16132, Genoa, Italy.
| | - Renato Gondar
- Neurosurgical Unit, Geneva University Hospitals, Geneva, Switzerland
| | | | - Gianluigi Zona
- Department of Neurosurgery, Ospedale Policlinico San Martino, Largo Rosanna Benzi 10, 16132, Genoa, Italy.,Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics and Maternal And Children (DINOGMI), University of Genoa, Genoa, Italy
| | - Enrico Tessitore
- Neurosurgical Unit, Geneva University Hospitals, Geneva, Switzerland.,Faculty of Medicine, University of Geneva, Geneva, Switzerland
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11
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Lau D, Haddad AF, Deviren V, Ames CP. Asymmetrical pedicle subtraction osteotomy for correction of concurrent sagittal-coronal imbalance in adult spinal deformity: a comparative analysis. J Neurosurg Spine 2020; 33:822-829. [PMID: 32764181 DOI: 10.3171/2020.5.spine20445] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Accepted: 05/11/2020] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Rigid multiplanar thoracolumbar adult spinal deformity (ASD) cases are challenging and many require a 3-column osteotomy (3CO), specifically asymmetrical pedicle subtraction osteotomy (APSO). The outcomes and additional risks of performing APSO for the correction of concurrent sagittal-coronal deformity have yet to be adequately studied. METHODS The authors performed a retrospective review of all ASD patients who underwent 3CO during the period from 2006 to 2019. All cases involved either isolated sagittal deformity (patients underwent standard PSO) or concurrent sagittal-coronal deformity (coronal vertical axis [CVA] ≥ 4.0 cm; patients underwent APSO). Perioperative and 2-year follow-up outcomes were compared between patients with isolated sagittal imbalance who underwent PSO and those with concurrent sagittal-coronal imbalance who underwent APSO. RESULTS A total of 390 patients were included: 338 who underwent PSO and 52 who underwent APSO. The mean patient age was 64.6 years, and 65.1% of patients were female. APSO patients required significantly more fusions with upper instrumented vertebrae (UIV) in the upper thoracic spine (63.5% vs 43.3%, p = 0.007). Radiographically, APSO patients had greater deformity with more severe preoperative sagittal and coronal imbalance: sagittal vertical axis (SVA) 13.0 versus 10.7 cm (p = 0.042) and CVA 6.1 versus 1.2 cm (p < 0.001). In APSO cases, significant correction and normalization were achieved (SVA 13.0-3.1 cm, CVA 6.1-2.0 cm, lumbar lordosis [LL] 26.3°-49.4°, pelvic tilt [PT] 38.0°-20.4°, and scoliosis 25.0°-10.4°, p < 0.001). The overall perioperative complication rate was 34.9%. There were no significant differences between PSO and APSO patients in rates of complications (overall 33.7% vs 42.3%, p = 0.227; neurological 5.9% vs 3.9%, p = 0.547; medical 20.7% vs 25.0%, p = 0.482; and surgical 6.5% vs 11.5%, p = 0.191, respectively). However, the APSO group required significantly longer stays in the ICU (3.1 vs 2.3 days, p = 0.047) and hospital (10.8 vs 8.3 days, p = 0.002). At the 2-year follow-up, there were no significant differences in mechanical complications, including proximal junctional kyphosis (p = 0.352), pseudarthrosis (p = 0.980), rod fracture (p = 0.852), and reoperation (p = 0.600). CONCLUSIONS ASD patients with significant coronal imbalance often have severe concurrent sagittal deformity. APSO is a powerful and effective technique to achieve multiplanar correction without higher risk of morbidity and complications compared with PSO for sagittal imbalance. However, APSO is associated with slightly longer ICU and hospital stays.
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Affiliation(s)
| | | | - Vedat Deviren
- 2Orthopaedic Surgery, University of California, San Francisco, California
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12
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Obeid I, Boissiere L, Bourghli A. Cervical Deformity Arising From Upper Thoracic Malalignment. Neurospine 2020; 17:568-573. [PMID: 33022161 PMCID: PMC7538347 DOI: 10.14245/ns.2040412.206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 08/22/2020] [Indexed: 11/22/2022] Open
Abstract
This study aims to describe the surgical management of cervical deformity arising from outside the cervical spine because of upper thoracic malalignment, using pedicle subtraction osteotomy (PSO). Cervical spine deformity is a complex topic and it can be generally divided into 2 categories, the first category is when the primary deformity is inside the cervical spine and the treatment will focus on the cervical spine itself, whereas the second category is when the primary deformity is outside the cervical spine usually in the adjacent upper thoracic area, the cervical deformity is a compensation for the adjacent malalignment, and thus in this situation, the management will occur in the upper thoracic area. Description of a single surgeon’s technique for performing PSO to treat rigid upper thoracic deformity. PSO in the upper thoracic spine is a safe and effective procedure and can result in satisfying clinical and radiological outcome with indirect correction of the compensatory cervical deformity. Cervical deformity arising from upper thoracic malalignment should be dealt with by treating the problem at its origin outside the cervical spine by performing a PSO in the upper thoracic spine.
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Affiliation(s)
- Ibrahim Obeid
- Clinique du Dos, Elsan Jean Villar Private Hospital, Bordeaux, France
| | - Louis Boissiere
- Clinique du Dos, Elsan Jean Villar Private Hospital, Bordeaux, France
| | - Anouar Bourghli
- Orthopedic and Spinal Surgery Department, Kingdom Hospital, Riyadh, Saudi Arabia
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