Letter to the Editor Open Access
Copyright ©The Author(s) 2025. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Orthop. Jan 18, 2025; 16(1): 102972
Published online Jan 18, 2025. doi: 10.5312/wjo.v16.i1.102972
Advances in 3D correction of adolescent scoliosis: The superiority of scoliocorrector fatma-UI in rotational realignment
Jin-Ke Zhu, Peng-He Zhou, Department of Orthopedic Surgery, Zhuji People's Hospital, Zhuji 311899, Zhejiang Province, China
Zhi-Peng Li, Second Department of Orthopedics, Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan Province, China
Zhi-Peng Li, Tianjian Advanced Biomedical Laboratory, Zhengzhou University, Zhengzhou 450001, Henan Province, China
ORCID number: Jin-Ke Zhu (0009-0003-2715-4771); Zhi-Peng Li (0000-0002-0355-7889).
Author contributions: Li ZP validation, writing of the original draft; Zhou PH formal Analysis, software and validation; Zhu JK conceptualization, writing, reviewing and editing. All authors participated in drafting the manuscript and all have read, contributed to, and approved the final version of the manuscript.
Conflict-of-interest statement: Every author has stated that there is no commercial, professional, or personal conflict of interest relevant to the study, proving that it complies with the principles of publishing ethics.
Open Access: This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: https://creativecommons.org/Licenses/by-nc/4.0/
Corresponding author: Jin-Ke Zhu, MD, Associate Professor, Department of Orthopedic Surgery, Zhuji People's Hospital, No. 9 Jianmin Road, Taozhu Street, Zhuji 311899, Zhejiang Province, China. 15068988573@163.com
Received: November 5, 2024
Revised: December 23, 2024
Accepted: January 2, 2025
Published online: January 18, 2025
Processing time: 70 Days and 23.4 Hours

Abstract

This letter compares the clinical efficacy and economic feasibility of the scoliocorrector fatma-UI (SCFUI) with direct vertebral rotation (DVR) in treating adolescent idiopathic scoliosis (AIS). SCFUI has shown promising results in three-dimensional spinal correction, providing superior rotational alignment compared to DVR and achieving significant improvements in coronal and sagittal planes. Additionally, SCFUI’s advanced design reduces risks associated with AIS surgeries and enhances overall patient outcomes. Economic analysis reveals SCFUI as a cost-effective option, potentially lowering long-term healthcare costs by minimizing complications and revisions. Our findings suggest that SCFUI is a viable, innovative approach in AIS treatment, meeting clinical and economic demands in orthopedic care.

Key Words: Adolescent idiopathic scoliosis; Cost-effectiveness; Direct vertebral rotation; Long-term outcomes; Patient well-being; Rotational correction; Scoliocorrector fatma-UI; Surgical training; Three-dimensional correction

Core Tip: The innovative scoliocorrector fatma-UI (SCFUI), a significant advancement in the treatment of adolescent idiopathic scoliosis (AIS). It emphasizes SCFUI's efficacy in three-dimensional spinal deformity correction, comparing favorably to traditional methods. The document highlights the necessity for specialized training for surgeons in the use of SCFUI, its impact on long-term patient outcomes, and explores its cost-effectiveness. This comprehensive analysis positions SCFUI as a promising solution in AIS treatment, addressing current challenges and focusing on holistic patient care.



TO THE EDITOR

I am writing to discuss the recent article by Phedy et al[1] on the scoliocorrector fatma-UI (SCFUI) (Table 1). Before examining the technological innovations of SCFUI, it is essential to establish a clear understanding of adolescent idiopathic scoliosis (AIS), a condition that poses significant challenges in terms of its prevalence, risks, and healthcare costs.

Table 1 Scoliocorrector fatma-UI comprehensive evaluation in many aspects.
Section
Focus area
Importance
SCFUI developmentDesign and engineering of SCFUIFoundational aspect of SCFUI
Finite element analysisStress and strain analysisEnsures device safety and reliability
Biomechanical testingMaterial strength and durabilityConfirms material suitability for surgical use
Clinical trial designMethodology and participant selectionEstablishes trial validity and integrity
SCFUI vs DVRComparative effectivenessDetermines superiority over existing methods
Surgical procedure detailsStep-by-step surgical applicationGuides surgeons in practical application
Training for surgeonsEssential skills for using SCFUICrucial for effective use of SCFUI
Skill enhancement programsAdvanced training techniquesEnhances surgical proficiency
Patient follow-up protocolsPost-treatment monitoringCritical for assessing treatment success
Long-term outcomesPhysical and health implicationsDetermines long-term treatment efficacy
Psychosocial considerationsMental health and quality of lifeAddresses patient's emotional and social needs
Cost-effectiveness analysisEconomic impact and healthcare resourcesEvaluates financial viability and patient affordability

AIS is a complex orthopedic condition that necessitates ongoing advancements in treatment strategies. Its three-dimensional deformity requires correction in the coronal, sagittal, and axial planes[2]. Current approaches, such as direct vertebral rotation (DVR), provide effective coronal and rotational corrections[3] but have notable limitations, including the risk of thoracic hypokyphosis[4,5] (Table 2). Addressing these shortcomings is critical for improving outcomes in AIS surgical management.

Table 2 The comparison of scoliocorrector fatma-UI with both the conservative treatment method and direct vertebral rotation.
Treatment method
Method name
Angle reduction degrees (SD)
Sample size
Average age (SD)
Average duration of treatment (week)
Outcome measures
Ref.
Improved SCFUI3.17 (2.19)2115.92 (0.35)N/ARotational angle
DVR1.19 (2.11)2315.73 (1.51)N/ARotational angle[1]
ConservativeCore Strength Training3.8211013.23 (2.40)12Cobb angle
PSSE3.799512.82 (1.19)24Cobb angle
Yoga4.603218.63 (0.91)12Cobb angle
Schroth3.633414.70 (1.30)24Cobb angle[35]

AIS affects a significant proportion of adolescents, presenting not only high incidence rates but also substantial healthcare costs[6,7]. Beyond spinal deformities, the condition is often complicated by risks such as neurological deficits, infections, and surgical hardware-related issues[8]. These factors exacerbate the economic burden of AIS, emphasizing the need for innovative, cost-efficient, and effective therapeutic approaches.

The SCFUI represents a promising advancement in AIS treatment, specifically designed to enhance three-dimensional correction. By overcoming the limitations of existing techniques like DVR, SCFUI has the potential to optimize surgical outcomes. The study by Phedy et al[1] highlights the development and evaluation of this innovative tool, providing valuable insights into its efficacy, safety, and functional outcomes.

The introduction of SCFUI is timely, given the pressing need for refined interventions that can achieve comprehensive correction across all planes while minimizing complications. This novel approach not only complements existing techniques but also aligns with the broader objective of reducing the healthcare burden associated with AIS.

Technological innovations of SCFUI in the context of current research

The SCFUI represents a breakthrough in the surgical management of AIS, offering a novel approach to three-dimensional spinal correction (Figure 1). Developed through extensive research involving finite element analysis and biomechanical testing, SCFUI was specifically designed to address the complex challenges of scoliosis correction. Its innovative design, incorporating pulleys, wires, and correction screws, enhances its efficacy and safety in clinical settings[1].

Figure 1
Figure 1 Specific areas targeted by scoliocorrector fatma-UI. SCFUI: Scoliocorrector fatma-UI.

The SCFUI stands out in the treatment of AIS due to its superior rotational correction capability, surpassing traditional methods such as DVR[1,3,9]. Research has shown that SCFUI delivers significant improvements in axial rotational alignment, effectively reducing residual deformities while minimizing the risks of degenerative changes and biomechanical impairments. By addressing the limitations of conventional techniques, SCFUI mitigates long-term complications associated with inadequate correction. Its ability to achieve comprehensive three-dimensional spinal alignment not only enhances postoperative outcomes but also lowers the risk of complications, ultimately improving patients’ overall quality of life.

The findings from biomechanical and finite element analyses confirm the structural integrity of SCFUI, supporting its clinical application[1]. Clinical trials have further demonstrated its safety and efficacy, with patients treated using SCFUI showing improved spinal alignment without compromising neurological functions. Motor-evoked and somatosensory-evoked potentials remained stable, underscoring the tool's reliability in preserving neurological safety during surgery[1].

Furthermore, SCFUI represents a significant evolution in AIS treatment methodologies, reflecting a broader shift towards more precise, efficient, and safe surgical interventions. Its success in clinical trials and subsequent integration into surgical practice highlights the importance of continuous innovation in medical technology, particularly in orthopedics and spinal surgery[1]. The tool’s superior outcomes in rotational correction suggest it may reduce postoperative complications and improve long-term results for AIS patients.

Despite its promising performance, further research is necessary to evaluate the long-term benefits and potential risks associated with SCFUI. Ongoing studies are essential to fully understand its implications for patient outcomes and refine its application in diverse clinical scenarios[1].

Overall, the development and implementation of SCFUI in AIS treatment mark a significant advancement in surgical technology. By addressing the limitations of existing techniques and providing a more comprehensive correction of complex spinal deformities, SCFUI exemplifies the dynamic nature of medical research and its critical role in advancing patient care in orthopedic surgery.

Training and skill development for surgeons

The development of the SCFUI for AIS treatment represents a significant advancement in surgical techniques. Training and skill development for surgeons using this tool is crucial, as it involves a complex procedure that requires a precise understanding of three-dimensional spinal deformities and their correction (Figure 2).

Figure 2
Figure 2 The step-by-step process of the application of scoliocorrector fatma-UI during the operation. At first, the upper instrumented vertebra (UIV) to the lower instrumented vertebra (LIV) of the patient's spine was exposed, and screws were inserted. If there were more than three subsequent vertebrae to UIV or LIV, additional screws were inserted until there were no more than three. Secondly, five pulleys were fixed on the screws, and the correction board was placed on the surgical table. After screws and housings were installed on the correction board, five wires were fastened to the screws to form movable pulleys. Finally, the treatment was achieved by alternately rotating the correction screws. LIV: Lower instrumented vertebra; UIV: Upper instrumented vertebra.

The SCFUI is designed to aid in the three-dimensional correction of scoliosis, a challenge in traditional methods[10-12]. Its development involved rigorous testing, including finite element and biomechanical analysis, to ensure its efficacy and safety in clinical applications. The device showed promising results in clinical trials, providing better rotational correction compared to DVR while maintaining similar safety and functional outcomes.

For surgeons, training in the use of SCFUI should encompass both the theoretical understanding of its design and practical skills in its application. This includes familiarization with the device's components, such as the correction board, screws, pulleys, and wires, and their proper assembly and application during surgery.

Given the complexity of AIS and the precision required in surgical interventions, simulation-based training could be highly beneficial for surgeons. This would allow them to practice the procedure in a controlled environment, minimizing the risk of complications during actual surgeries. Additionally, ongoing training and workshops could be instrumental in keeping surgeons updated on the latest developments and techniques associated with SCFUI.

Future research in this area could focus on simplifying the device for easier assembly and application, expanding its use for different types of scoliotic curves, and further evaluating its long-term outcomes compared to other surgical techniques. Such research would be invaluable in advancing the treatment of AIS and improving patient outcomes.

Long-term outcomes and patient follow-up in AIS research

Long-term outcomes and patient follow-up in AIS research are crucial for understanding the impact of various treatments on patients' lives. Recent studies have provided valuable insights into these aspects (Table 2).

A systematic review and meta-analysis of randomized controlled trials and observational studies have assessed the impact of patient scoliosis-specific exercises (PSSE) on AIS outcomes. The results indicated that while PSSE led to some improvement in Cobb angle, it was not clinically significant. Moreover, the study found no substantial improvement in axial trunk rotation or SRS-22 scores, which assess scoliosis-related health quality of life[13].

Another key aspect of AIS research is the natural history and long-term health implications of the condition. Studies have shown that while AIS does not generally result in increased mortality, severe cases can lead to complications such as cardiorespiratory failure, especially in curves exceeding 110 degrees. Importantly, smaller curves (50-70° range) in adolescent-onset idiopathic scoliosis typically do not lead to such severe outcomes, especially in patients not bothered by pain or appearance concerns[14].

Additionally, an in-depth analysis comparing the long-term outcomes of conservative measures, like bracing and physical therapy, vs surgical interventions, revealed that the severity of lifelong pain correlates more with the degree of the curve rather than the type of treatment. The study also found that conservative treatment, such as bracing, can impact patients' self-image and mental health more significantly than surgical treatments[15].

Furthermore, corrective surgery for AIS, such as posterior spinal fusion, can bring several benefits including improvements in aesthetics, quality of life, disability, back pain, psychological well-being, and breathing function. However, long-term complications like neurological damage, strain on unfused vertebrae, and degenerative disc disease (DDD) also need to be considered. The outcomes after surgery showed variations, with some patients developing new DDD and others experiencing no association between the development of DDD and clinical findings like disability and pain[16].

Overall, these findings highlight the importance of considering both the physical and psychological impacts of AIS and its treatments in the long term. They also underscore the need for ongoing research to better understand the long-term effects of various treatment modalities in AIS.

Cost-effectiveness in AIS treatment

The treatment costs for AIS have risen substantially over the past few decades, increasing from $55000 in 1997 to $177000 in 2012[1,6]. In response to this escalating financial burden, the development of SCFUI introduces a promising alternative for AIS management, underpinned by cost-effectiveness analysis (CEA).

CEA plays a pivotal role in AIS treatment by evaluating the economic and health outcomes of various therapeutic options. Its primary objective is to optimize the allocation of healthcare resources by comparing the costs and benefits of different interventions. This involves calculating the incremental cost-effectiveness ratio (ICER), which quantifies the additional cost required to achieve a unit of health improvement, such as extended life expectancy or enhanced functional capacity. The ICER serves as a critical metric for guiding decision-makers in selecting the most value-driven treatment strategies.

SCFUI exhibits notable cost-effectiveness advantages in clinical settings. Regarding correction outcomes, SCFUI matches the efficacy of traditional DVR techniques in the coronal and sagittal planes while demonstrating superior performance in rotational correction (11.59° ± 7.46° vs 18.23° ± 6.39°, P = 0.001). Clinical trials have further validated that the SCFUI and DVR groups share comparable safety profiles in terms of neurological function and overall outcomes. Finite element analysis reveals that the maximum stress on SCFUI components ranges between 31.2 and 252 MPa, and biomechanical testing indicates an elastic modulus of 9561324 ± 633277 MPa, underscoring the tool’s safety and reliability[1].

Economically, SCFUI offers significant advantages by streamlining surgical procedures, reducing operative time, minimizing the risk of complications, and shortening hospital stays. Its exceptional three-dimensional correction capabilities also lower the likelihood of revision surgeries, leading to substantial long-term cost savings. These benefits are particularly impactful in resource-constrained healthcare settings[1].

The introduction and application of SCFUI align seamlessly with contemporary healthcare policies focused on reducing medical expenses while ensuring high-quality treatment outcomes. By providing an innovative, cost-effective solution, SCFUI addresses the mounting financial challenges associated with AIS treatment, meeting the increasing demand for accessible and effective care.

Economic impact and family costs

The economic impact of AIS treatment is multifaceted. It includes direct costs like surgery, hospital stays, and ongoing medical care, and indirect costs like lost parental workdays and long-term care needs. For instance, the introduction of advanced treatments like SCFUI may initially increase direct costs due to the technology's novelty and required specialized training. However, if SCFUI leads to fewer complications and revisions, it could reduce long-term costs for families and healthcare systems.

The burden on families is not just financial. There's also an emotional and physical cost, including the stress of managing treatment schedules and the impact on family dynamics. Effective treatment strategies should consider these broader economic and familial impacts, ensuring that families are supported throughout the treatment process.

Healthcare accessibility and AIS treatment

Healthcare accessibility is a significant factor in the treatment of AIS. It involves ensuring that patients have timely and effective access to the required medical services[17]. Key strategies to improve healthcare accessibility include managing appointment schedules effectively, reducing no-shows, and optimizing the utilization of healthcare resources[17].

Effective management of outpatient appointments is crucial. This can be achieved by implementing policies like open access scheduling and overlapping appointment models, which help to reduce patient wait times and improve the efficiency of healthcare providers[18]. Managing appointment cancellations and no-shows effectively, perhaps by maintaining a waiting list for same-day appointments, is also important[19]. These strategies can significantly improve patient satisfaction and treatment outcomes by ensuring timely access to care[20].

Such measures are particularly relevant in AIS treatment, where timely interventions can be critical to the success of the treatment plan[21]. Implementing these strategies can lead to better management of healthcare resources, improving access to care for AIS patients[22].

Multi-system, multi-organ impact and adolescent psychology

The impact of multiple systems and organs on adolescent mental health is a critical consideration in the treatment of AIS, which poses complex psychological and physical challenges. Adolescents with AIS often face diminished self-esteem, altered body image, and limitations in daily activities, contributing to psychological distress and social withdrawal[23,24]. These challenges are exacerbated by physical symptoms such as pain, discomfort, and restricted mobility, further affecting their mental well-being[25].

AIS treatments, both conservative and surgical, significantly influence patients' psychological health. Bracing, while effective in halting curve progression, is associated with increased anxiety and social challenges due to its visibility and physical discomfort[26]. Conversely, surgical interventions, though initially anxiety-inducing, often lead to substantial improvements in body image, self-esteem, and overall mental health post-operatively[27,28]. Recognizing these varied psychological impacts is crucial for developing comprehensive care strategies that address the full spectrum of AIS-related challenges.

Adolescent psychology is profoundly influenced by factors such as family dynamics, societal attitudes, and personal health perceptions, all of which play a crucial role in determining the outcomes of AIS treatment. Support from family members and healthcare providers is instrumental in shaping adolescents' attitudes toward their health and enhancing their adherence to treatment. A nurturing and supportive environment can significantly alleviate the psychological burden associated with AIS, promote resilience, and ultimately improve treatment outcomes[29].

Given these dynamics, a holistic approach to AIS treatment is essential. This involves addressing not only the physical deformities but also the psychological challenges associated with AIS[30]. Multidisciplinary treatment programs that integrate physical and mental health support are particularly effective[31,32]. Psychosocial interventions, including counseling, support groups, and educational initiatives, empower adolescents and their families to navigate the challenges of AIS treatment. These measures improve mental health outcomes, enhance quality of life, and promote treatment adherence.

By adopting a holistic, multidisciplinary approach, healthcare providers can create a supportive environment that actively involves adolescents in their care. This comprehensive strategy ensures optimal outcomes, addressing both the physical and psychological needs of patients with AIS while fostering long-term well-being and satisfaction.

Future research directions and potential developments

Future research directions and potential developments in the field of AIS treatment are crucial for enhancing patient outcomes and advancing medical knowledge. Given the high incidence, risk, and cost associated with AIS, it is evident that innovative approaches are necessary.

One promising avenue is the refinement and assessment of cutting-edge surgical instruments and methods. A notable example is the SCFUI, as showcased in the study by Phedy et al[1] This innovative tool is designed to facilitate three-dimensional correction of scoliosis. Its demonstrated efficacy in clinical trials indicates a substantial potential for enhancing surgical results.

Future studies could focus on refining these tools for broader applicability, including different types of scoliosis curves. Additionally, exploring minimally invasive surgical techniques could reduce recovery times and complications. The integration of new materials and technology, like biocompatible implants or robotics, may also enhance precision in surgery.

Moreover, as AIS can have a substantial psychosocial impact on adolescents, future research should also explore comprehensive care approaches. This includes psychological support for patients, as well as post-operative rehabilitation strategies to improve long-term functional outcomes.

Finally, with advancements in genetics and molecular biology, research could delve into the underlying causes of AIS. Understanding the genetic components may lead to early detection methods or preventative strategies, potentially reducing the need for surgical interventions. Recent advancements in genetics and molecular biology have unveiled critical insights into the etiology and progression of AIS. Notably, variations in the LBX1 gene have been associated with increased susceptibility to AIS[33,34], highlighting the potential for genetic screening in early diagnosis and personalized treatment approaches. Furthermore, epigenetic studies have identified specific DNA methylation patterns correlated with AIS progression, suggesting that targeted epigenetic therapies could emerge as viable non-surgical interventions[35]. These genetic and epigenetic discoveries pave the way for developing predictive models and individualized treatment plans, ultimately enhancing patient outcomes and quality of life.

In summary, the future of AIS treatment lies in a multidisciplinary approach that combines surgical innovation, comprehensive patient care, and a deeper understanding of the condition's etiology. This approach not only aims at improving surgical techniques and outcomes but also at enhancing the overall quality of life for AIS patients.

Limitations

This study underscores the superiority of SCFUI over DVR in rotational correction. However, limitations such as a small sample size, short follow-up period, and single-center design may affect the generalizability and comprehensiveness of the findings. The absence of patient-reported outcome measures (PROMs), such as the SRS-22 score, further limits the assessment of patients' quality of life and subjective benefits.

Future research should address these issues by increasing sample sizes, incorporating multi-center designs, extending follow-up durations, and integrating PROMs. These improvements will enhance the robustness of the evidence, providing stronger support for clinical application and decision-making.

Footnotes

Provenance and peer review: Unsolicited article; Externally peer reviewed.

Peer-review model: Single blind

Specialty type: Orthopedics

Country of origin: China

Peer-review report’s classification

Scientific Quality: Grade B, Grade B

Novelty: Grade A, Grade A

Creativity or Innovation: Grade B, Grade B

Scientific Significance: Grade A, Grade B

P-Reviewer: Hasibuzzaman MA S-Editor: Qu XL L-Editor: A P-Editor: Zhang YL

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