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Luhmann SJ, Baker D. Breaking the "law of diminishing returns" with novel, staged, unilateral magnetically controlled growing rods to guided growth surgery for severe, progressive infantile scoliosis. Spine Deform 2024; 12:1467-1475. [PMID: 38627336 DOI: 10.1007/s43390-024-00870-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Accepted: 03/21/2024] [Indexed: 08/24/2024]
Abstract
PURPOSE Infantile scoliosis presents a significant challenge due to high risk of pulmonary complications and morbidity. While dual growing rod constructs are often utilized, they are not always feasible in a young patient with a severe curve. In this study, we present a series of eight patients treated with a unilateral magnetically controlled growing rod (uMCGR) construct later converted to guided growth surgery (GGS). METHODS A multicenter database was queried for patients with progressive infantile scoliosis treated with uMCGR before later conversion to GGS. A minimum of 2 year follow-up was required for inclusion. Curve magnitude, trunk growth, revisions, and complications were tracked at all time points. RESULTS Eight patients were included in the study. Mean age at index surgery was 4.1 years, while conversion to GGS occurred at average 7.9 years and final follow-up was at 10.5 years of age. At index procedure, major curve averaged 77.1°, which improved to 45.4°. Major curve increased to 48.4° prior to conversion, then improved to 30.9°. Major curve averaged 36.8° at final follow-up, for a maintained curve correction of 52.3%. T1-12 height and T1-S1 height averaged 15.4 and 21.5 cm at index procedure and increased to 20.6 and 32.7 cm at final follow-up. Nine revisions were performed in 6 patients, and no patient showed evidence of premature fusion. CONCLUSIONS Treatment of severe progression infantile scoliosis with this staged protocol provided excellent curve correction with continued trunk growth through treatment, without evidence of the "Law of Diminishing Returns".
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Affiliation(s)
- Scott J Luhmann
- Department of Orthopaedics, Washington University School of Medicine, St. Louis, MO, USA.
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McFadden RJ, Hauth L, Gregoski M, Anari JB, Brooks JT, Sawyer JR, Marshall M, Murphy RF. A multicenter evaluation of the time and travel burden on families with children treated for early-onset scoliosis. Spine Deform 2024; 12:1453-1458. [PMID: 38796814 DOI: 10.1007/s43390-024-00895-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Accepted: 05/07/2024] [Indexed: 05/29/2024]
Abstract
PURPOSE Patients who undergo growth-friendly (GF) treatment for early-onset scoliosis (EOS) undergo multiple clinical and surgical encounters. We sought to quantify the associated temporal and travel burden and estimate subsequent cost. METHODS Four centers in an international study group combined data on EOS patients who underwent surgical GF treatment from 2006 to 2021. Data collected included demographics, scoliosis etiology, GF implant, encounter type, and driving distance. We applied 2022 IRS and BLS data or $0.625/mile and $208.2/day off work to calculate a relative financial burden. RESULTS A total of 300 patients were analyzed (55% female). Etiologies were: congenital (33.3%), idiopathic (18.7%), neuromuscular (30.7%), and syndromic (17.3%). The average age at the index procedure was 5.5 years. For the 300 patients, 5899 encounters were recorded (average 18 encounters/patient). Aggregate encounter types were 2521 clinical office encounters (43%), 2045 surgical lengthening encounters (35%), 1157 magnetic lengthening encounters (20%), 149 spinal fusions (3%), and 27 spinal fusion revisions (0.5%). When comparing patients by scoliosis etiology or by GF implant type, no significant differences were noted in the total number of encounters or average travel distance. Patients traveled a median round trip distance of 158 miles/encounter between their homes and treating institutions (range 2.4-5654 miles), with a cumulative median distance of 2651 miles for the entirety of their treatment (range 29-90,552 miles), at an estimated median cost of $1656.63. The mean number of days off work was 18 (range 3-75), with an associated loss of $3643.50 in income. CONCLUSION Patients with EOS averaged 18 encounters for GF surgical treatment. These patients and their families traveled a median distance of 158 miles/encounter, with an estimated combined mileage and loss of income of $5300.
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Affiliation(s)
- Ryan J McFadden
- Department of Orthopaedics and Physical Medicine, Medical University of South Carolina, 96 Jonathan Lucas Street, MSC 708, Charleston, SC, 29425, USA
| | - Lucas Hauth
- Division of Orthopaedics, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Mathew Gregoski
- Department of Orthopaedics and Physical Medicine, Medical University of South Carolina, 96 Jonathan Lucas Street, MSC 708, Charleston, SC, 29425, USA
| | - Jason B Anari
- Division of Orthopaedics, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Jaysson T Brooks
- Department of Orthopaedics, Scottish Rite for Children, Dallas, TX, USA
| | | | - Maxwell Marshall
- Department of Orthopaedics and Physical Medicine, Medical University of South Carolina, 96 Jonathan Lucas Street, MSC 708, Charleston, SC, 29425, USA
| | - Robert F Murphy
- Department of Orthopaedics and Physical Medicine, Medical University of South Carolina, 96 Jonathan Lucas Street, MSC 708, Charleston, SC, 29425, USA.
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Mainard N, Saghbini E, Pesenti S, Gouron R, Ilharreborde B, Lefevre Y, Haumont T, Sales de Gauzy J, Canavese F. Is posterior vertebral arthrodesis at the end of the electromagnetic rod lengthening program necessary for all patients? Comparative analysis of sixty six patients who underwent definitive spinal arthrodesis and twenty four patients with in situ lengthening rods. INTERNATIONAL ORTHOPAEDICS 2024; 48:1599-1609. [PMID: 38421434 DOI: 10.1007/s00264-024-06121-8] [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: 09/06/2023] [Accepted: 02/12/2024] [Indexed: 03/02/2024]
Abstract
PURPOSE Magnetically controlled growing rods (MCGR) should be removed or changed at most two years after their implantation in the treatment of patients with early-onset scoliosis (EOS) (Safety notice July 2021). However, in the face of patients at high risk of intraoperative complications and relying on the principle of auto-fusion of the spine, some surgeons would prefer a more wait-and-see attitude. The aim of this study was to report on patients who did not undergo final fusion at the end of the lengthening program with MCGR and to compare them with those who did. METHODS This was a multicenter study with ten centres. We collected all graduate patients with EOS who had received MCGR between 2011 and 2022. RESULTS A total of 66 patients had final fusion at the end of the lengthening program and 24 patients kept MCGRs in situ. The mean total follow-up time was 66 months (range, 25.3-109), and the mean follow-up time after final lengthening was 24.9 months (range, 3-67.7). Regarding the main curve and thoracic height, there was no significant difference in the percentage of correction over the whole follow-up between the two groups (p = 0.099, p = 0.176) although there was a significant difference between the end of lengthening and the last follow-up (p < 0.001). After completion of the lengthening program, 18 patients who had final fusion developed 24 of the 26 recorded complications (92.3%). CONCLUSION Contrary to the manufacturer's published safety notice, not all patients systematically benefited from the removal of the MCGRs. Although arthrodesis significantly improved the scoliotic deformity, no significant difference was found in terms of radiographic outcome between patients who underwent spinal fusion and those who kept the MCGRs in situ.
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Affiliation(s)
- Nicolas Mainard
- Department of Pediatric Surgery, Jeanne de Flandre Hospital, CHU Lille, Avenue Eugène Avinée, 59000, Lille, France.
| | - Elie Saghbini
- Orthopaedic and Reconstructive Surgery in Children, Hôpital Armand-Trousseau - AP-HP Is, 26 Avenue du Docteur Arnold Netter, 75012, Paris, France
| | - Sebastien Pesenti
- Pediatric Orthopedic Surgery, Hôpital de La Timone Enfants, 264 Rue Saint-Pierre, 13005, Marseille, France
| | - Richard Gouron
- Child Surgery, CHU Amiens-Picardie, 1 Rond-Point du Professeur Christian Cabrol, 80000, Amiens, France
| | - Brice Ilharreborde
- Department of Pediatric Orthopedic Surgery, Hôpital Robert-Debré, 48 Boulevard Sérurier, 75019, Paris, France
| | - Yan Lefevre
- Children's Surgery - Children's Hospital - Pellegrin Hospital Group, Place Amélie Raba-Léon, 33076, Bordeaux Cedex, France
| | - Thierry Haumont
- Department of Orthopedic, Trauma and Plastic Surgery, Hospital Mère Enfant, 59 Boulevard Pinel, 69500, Hospices Civils de LyonBron, France
| | - Jerome Sales de Gauzy
- Paediatrics - Orthopaedic, Traumatological And Plastic Surgery, Children's Hospital, 330, Avenue de Grande Bretagne - TSA, 70034 - 31059, Toulouse, France
| | - Federico Canavese
- Department of Pediatric Surgery, Jeanne de Flandre Hospital, CHU Lille, Avenue Eugène Avinée, 59000, Lille, France
- Faculty of Medicineof the , University of Lille Henri Warembourg, 2 Av Eugène Avinée, 59120, Loos, France
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Jamnik AA, Shaw KA, Thornberg D, McClung A, Jo CH, Ramo B, McIntosh A. Health-related quality of life and clinical outcomes for magnetically controlled growing rod patients after treatment termination. Spine Deform 2024; 12:853-863. [PMID: 38219256 DOI: 10.1007/s43390-023-00801-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 12/02/2023] [Indexed: 01/16/2024]
Abstract
PURPOSE To determine the health-related quality of life (HRQoL) and clinical outcomes of children with early onset scoliosis (EOS) treated with magnetically controlled growing rods (MCGR) followed to definitive fusion (DF). METHODS A retrospective review of EOS patients treated with MCGR and followed to DF was performed. Outcomes included HRQoL scores, radiographic, clinical, and unplanned returns to the operating room (UPROR) data collected at pre-MCGR implantation, immediately post-MCGR implantation, pre-DF, and post-DF. HRQoL scores were collected at least 6 months post-DF. RESULTS Twenty-eight patients (57.1% females, mean age at MCGR insertion 7.19 ± 1.5 years, mean pre-MCGR Cobb 64.7° ± 17.6) met inclusion criteria. MCGR treatment resulted in an overall 30.2% improvement in coronal plane deformity following DF. The mean growth rates between MCGR implantation and pre-DF for T1-T12 height and T1-S1 length were 0.33 ± 0.23 mm/month and 0.49 ± 0.28 mm/month, respectively. Of the 28 included patients, 26 (92.9%) experienced at least one UPROR, with a total of 52 surgical complications occurring in the total cohort, representing 1.9 UPROR/patient. Interestingly, there was a decline in scores reported between post-MCGR implantation and the pre-DF time-point (N = 16, 78.2 ± 14.9 vs 69.7 ± 17.8, p = 0.02). These scores recovered post-DF, resulting in an overall unchanged HRQoL when comparing pre-MCGR to post-DF (N = 11, 79.9 ± 15.1 vs 76.7 ± 17.9, p = 0.44). CONCLUSION While MCGR treatment achieves coronal plane deformity control and facilitates spinal growth, only 7.1% of children experienced a complication-free treatment course when followed to definitive fusion. Patients achieved modest curve correction and spinal growth, while maintaining stable HRQoL outcomes between pre-MCGR and post-DF.
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Affiliation(s)
- Adam A Jamnik
- University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - K Aaron Shaw
- Department of Pediatric Orthopaedic Surgery, Children's Mercy Hospital, Kansas City, MO, USA
| | - David Thornberg
- Department of Pediatric Orthopedic Surgery, Scottish Rite for Children, 2222 Welborn St, Dallas, TX, 75219, USA
| | - Anna McClung
- Department of Pediatric Orthopedic Surgery, Scottish Rite for Children, 2222 Welborn St, Dallas, TX, 75219, USA
| | - Chan-Hee Jo
- Department of Pediatric Orthopedic Surgery, Scottish Rite for Children, 2222 Welborn St, Dallas, TX, 75219, USA
| | - Brandon Ramo
- Department of Pediatric Orthopedic Surgery, Scottish Rite for Children, 2222 Welborn St, Dallas, TX, 75219, USA
| | - Amy McIntosh
- Department of Pediatric Orthopedic Surgery, Scottish Rite for Children, 2222 Welborn St, Dallas, TX, 75219, USA.
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Wang X, Zhang H, Sucato DJ. Unilateral thoracic spinal nerve resection creates early onset thoracic scoliosis in an immature porcine model. 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 2023; 32:2975-2990. [PMID: 37330938 DOI: 10.1007/s00586-023-07804-3] [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: 01/13/2023] [Revised: 03/02/2023] [Accepted: 05/29/2023] [Indexed: 06/20/2023]
Abstract
PURPOSE To test whether multiple-level unilateral thoracic spinal nerves (TSN) resection can induce the initial thoracic cage deformity to cause early onset thoracic scoliosis in an immature porcine model; and 2) to create an early onset thoracic scoliosis in a large animal model that can be used to evaluate growth-friendly surgical techniques and instruments in growing spine researches. METHODS Seventeen one-month-old pigs were assigned to 3 groups. In group 1 (n = 6), right TSN were resected from T7 to T14 with the contralateral (left) paraspinal muscle exposing and stripping. In group 2 (n = 5), the animals were treated in the same way except the contralateral (left) side was intact. In group 3 (n = 6), bilateral TSN were resected from T7 to T14. All animals were followed up for 17-weeks. Radiographs were measured and analyzed the correlation between the Cobb angle and thoracic cage deformity. A histological examination of the intercostal muscle (ICM) was performed. RESULTS In the groups 1 and 2, an average 62 ± 12° and 42 ± 15° right thoracic scoliosis with apical hypokyphosis of a mean - 5.2 ± 16° and - 1.8 ± 9° were created, respectively, during 17-weeks follow up. All curves were located at the operated levels with the convexity toward the TSN resection side. Statistical analysis demonstrated that the thoracic deformities were strongly correlated with the Cobb angle. In group 3, no scoliosis was created in any animal, but an average thoracic lordosis of - 32.3 ± 20.3° was seen. The histological examination showed the ICM denervation on the TSN resection side. CONCLUSION Unilateral TSN resection induced the initial thoracic deformity toward the TSN resection side resulting in thoracic hypokyphotic scoliosis in an immature pig model. This early onset thoracic scoliosis model could be used to evaluate the growth-friendly surgical techniques and instruments in future growing spine researches.
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Affiliation(s)
- Xiaobin Wang
- Scottish Rite for Children, University of Texas Southwestern Medical Center, 2222 Welborn St, Dallas, TX, 75219, USA
- Department of Orthopaedice Surgery, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX, 75390, USA
| | - Hong Zhang
- Scottish Rite for Children, University of Texas Southwestern Medical Center, 2222 Welborn St, Dallas, TX, 75219, USA.
- Department of Orthopaedice Surgery, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX, 75390, USA.
| | - Daniel J Sucato
- Scottish Rite for Children, University of Texas Southwestern Medical Center, 2222 Welborn St, Dallas, TX, 75219, USA
- Department of Orthopaedice Surgery, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX, 75390, USA
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