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Gou Y, Tao J, Lei H, Hou M, Chen X, Wang X. Trunk kinematic analysis of ascent and descent stairs in college students with idiopathic scoliosis: a case-control study. Spine J 2024:S1529-9430(24)00167-0. [PMID: 38615934 DOI: 10.1016/j.spinee.2024.04.004] [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: 11/27/2023] [Revised: 03/06/2024] [Accepted: 04/06/2024] [Indexed: 04/16/2024]
Abstract
BACKGROUND CONTEXT Traditional 3D motion analysis typically considers the spine as a rigid entity. Nevertheless, previous single-joint models have proven inadequate in evaluating the movement across different spinal segments in patients with idiopathic scoliosis (IS). Scoliosis significantly impairs movement functions, especially during activities such as ascending and descending stairs. There is a lack of research on the patterns of stair movement specifically for patients with IS. PURPOSE This study aims to investigate trunk kinematics in college students with IS during stair ascent and descent tasks. A total of 56 participants, 28 with IS and 28 with healthy controls, were recruited for this case-control study. The trunk movements were analyzed using a motion analysis system that incorporated a multisegment spine model. Understanding the multi-segment spine kinematics during stair tasks can contribute to the development of effective rehabilitation programs for individuals with IS. STUDY DESIGN Case-control study. SAMPLE SIZE 28 IS and 28 controls. OUTCOME MEASURES Cobb angle, spinal curvature, spinal active range of motion (ROM), Kinematics METHODS: The Qualisys system (Gothenburg, Sweden) was utilized in this study with a sampling frequency of 150 Hz. It recorded the kinematics in the thoracic, lumbar, thoracic cage, and pelvis while ascending and descending stairs for both the 28 IS individuals and the 28 control participants. Additionally, clinical parameters such as the Cobb angle, curvature of the spine, spinal range of motion (ROM), and other relevant factors were concurrently assessed among the subjects. Project supported by the National Natural Science Foundation of China (Grant No. 82205306). The authors declare no conflict of interest in preparing this article. RESULTS The findings of this study revealed that IS individuals exhibited reduced kyphotic curvature in the sagittal plane (p<.05) when compared to the control group. In contrast, these IS patients displayed greater coronal curvature (Cobb angle) in the frontal plane and a more substantial difference in thoracic side bending range of motion in comparison to the control group (p.05). Moreover, during the ascending stair activity, IS patients showed reduced thoracic cage flexion-extension range of motion (p<.05), while displaying increased lumbar rotation range of motion and anterior-posterior pelvic tilt range of motion (p<.05) in contrast to the control group. Notably, the kinematic analysis during the descent of stairs indicated that IS patients exhibited a larger range of motion in thoracic flexion-extension, thoracic side bending, thoracic cage side bending, thoracic rotation, and thoracic cage rotation when compared to the control group (p<.05). CONCLUSIONS The results showed significant differences in trunk kinematics between the two groups during both stair ascent and descent tasks. The utilization of the "multisegment spine model" facilitates the acquisition of motion information across multiple segments of the spine in patients diagnosed with IS, effectively enhancing the assessment outcomes derived from imaging information. The three-dimensional structural deformity in the trunk affects both static and dynamic activity patterns. In different activity states, IS patients demonstrate stiff movements in certain segments while experiencing compensatory instability in others. In the future, clinical rehabilitation programs for IS should prioritize stair-related activity training.
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Affiliation(s)
- Yanyun Gou
- Fujian University of Traditional Chinese Medicine, No.1 Qiuyang Rd, Minhou Shangjie, Fuzhou, Fujian 350122, China.
| | - Jing Tao
- Fujian University of Traditional Chinese Medicine, No.1 Qiuyang Rd, Minhou Shangjie, Fuzhou, Fujian 350122, China
| | - Huangwei Lei
- Fujian University of Traditional Chinese Medicine, No.1 Qiuyang Rd, Minhou Shangjie, Fuzhou, Fujian 350122, China
| | - Meijin Hou
- Fujian University of Traditional Chinese Medicine, No.1 Qiuyang Rd, Minhou Shangjie, Fuzhou, Fujian 350122, China
| | - Xiang Chen
- Fujian University of Traditional Chinese Medicine, No.1 Qiuyang Rd, Minhou Shangjie, Fuzhou, Fujian 350122, China
| | - Xiangbin Wang
- Fujian University of Traditional Chinese Medicine, No.1 Qiuyang Rd, Minhou Shangjie, Fuzhou, Fujian 350122, China
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Boulcourt S, Badel A, Pionnier R, Neder Y, Ilharreborde B, Simon AL. A gait functional classification of adolescent idiopathic scoliosis (AIS) based on spatio-temporal parameters (STP). Gait Posture 2023; 102:50-55. [PMID: 36905785 DOI: 10.1016/j.gaitpost.2023.03.002] [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: 09/06/2022] [Revised: 02/04/2023] [Accepted: 03/06/2023] [Indexed: 03/13/2023]
Abstract
BACKGROUND Therapeutic decisions for patients with adolescent idiopathic scoliosis (AIS) are mostly based on static measurements performed on two-dimensional standing full-spine radiographs. However, the trunk plays an essential role in the human locomotion, and the functional consequences during daily activities of this specific and common spinal deformity are not factored in. RESEARCH QUESTION Does patients with AIS have specific gait patterns based on spatio-temporals parameters measurements ? METHODS 90 AIS patients (aged 10-18 years) with preoperative simplified gait analysis were retrospectively included for analysis between 2017 and 2020. Spatio-temporal parameters (STP) were measured on a 3-m baropodometric gaitway and included the measurement of 15 normalized gait parameters. A hierarchical cluster analysis was performed to identify group of patients based on the similarities of their gait patterns, and functional variables' inter-group differences were also measured. The subject distribution was calculated to identify the structural characteristics of the subjects according to their gait patterns. RESULTS Three gait patterns were identified. Cluster 1 (46%) was defined by asymmetry, Cluster 2 (16%) by instability, and Cluster 3 (36%) by variability. Each cluster was significantly different from the other ones on at least 6 different parameters (p < 0.05). Furthermore, each cluster was associated with one type of curve: Lenke 1 for Cluster 1 (57.5%), Lenke 6 for Cluster 2 (40%) and Lenke 5 for Cluster 3 (43.5%). SIGNIFICANCE Patients with severe AIS have a dynamic signature during gait identified on STP. Understanding consequences of this deformity on gait may be an interesting avenue to study the pathological mechanisms involved in their dynamic motor organization. Furthermore, these results might also be a first step to study the effectiveness of the different therapies.
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Affiliation(s)
- Sarah Boulcourt
- Plateforme d'Analyse de la Marche (PAM), Robert Debré University Hospital, Assistance Publique des Hôpitaux de Paris (AP-HP), Paris, France
| | - Anne Badel
- Unité de Biologie Fonctionnelle et Adaptative (BFA), UMR 8251, CNRS, ERL 1133, Inserm, Paris, France; Université Paris Cité, Paris, France
| | - Raphaël Pionnier
- Unité Fonctionnelle d'Analyse du Mouvement (UFAM), Hôpitaux Nationaux de Saint-Maurice, Saint-Maurice, France
| | - Yamile Neder
- Plateforme d'Analyse de la Marche (PAM), Robert Debré University Hospital, Assistance Publique des Hôpitaux de Paris (AP-HP), Paris, France; Department of Pediatric Orthopaedic Surgery, Robert Debré University Hospital, Assistance Publique des Hôpitaux de Paris (AP-HP), Paris, France
| | - Brice Ilharreborde
- Université Paris Cité, Paris, France; Department of Pediatric Orthopaedic Surgery, Robert Debré University Hospital, Assistance Publique des Hôpitaux de Paris (AP-HP), Paris, France
| | - Anne-Laure Simon
- Plateforme d'Analyse de la Marche (PAM), Robert Debré University Hospital, Assistance Publique des Hôpitaux de Paris (AP-HP), Paris, France; Université Paris Cité, Paris, France; Department of Pediatric Orthopaedic Surgery, Robert Debré University Hospital, Assistance Publique des Hôpitaux de Paris (AP-HP), Paris, France.
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Liu Y, Li X, Dou X, Huang Z, Wang J, Liao B, Zhang X. Correlational analysis of three-dimensional spinopelvic parameters with standing balance and gait characteristics in adolescent idiopathic scoliosis: A preliminary research on Lenke V. Front Bioeng Biotechnol 2022; 10:1022376. [PMID: 36532594 PMCID: PMC9747941 DOI: 10.3389/fbioe.2022.1022376] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 11/18/2022] [Indexed: 09/21/2023] Open
Abstract
Background: Adolescent idiopathic scoliosis (AIS), the most common spinal deformity, possibly develops due to imbalanced spinal loading following asymmetric development. Since altered loading patterns may affect standing balance and gait, we investigated whether a correlation exists between balance ability, gait pattern, and the three-dimensional radiographic spinopelvic parameters in AIS patients. Methods: A cross-sectional observational study was conducted with 34 AIS patients (aged 10-18 years) and an equal number of healthy age and sex-matched teenagers (normal group). We obtained the spinopelvic three-dimensional parameters and balance parameters simultaneously through the EOS imaging system and gait and center of pressure (CoP) characteristics using a plantar pressure measurement mat. Besides determining the intergroup differences in balance and gait parameters, multiple linear regression analyses were performed to identify any correlation between the static plantar pressure and radiographic parameters. Results: Compared to the normal group, the CoPx is lower, the CoP path length and 90% confidence ellipse area were significantly higher in AIS patients (AIS: -13.7 ± 5.7 mm, 147.4 ± 58.1 mm, 150.5 ± 62.8 mm2; normal: -7.0 ± 5.4 mm, 78.8 ± 32.0 mm, 92.1 ± 41.7 mm2, respectively), correlated with apical vertebra translation, sagittal pelvic tilt, and pelvis axial rotation, respectively. Moreover, AIS patients had a shorter stance phase (61.35 ± 0.97 s vs. 62.39 ± 1.09 s), a longer swing phase (38.66 ± 0.97 s vs. 37.62 ± 1.08 s), and smaller maximum pressure peaks in the gait cycle, especially on the left foot, as compared to healthy subjects. Moreover, the CoP trajectory in AIS patients was different from the latter, and changes in the bipedal trend were not consistent. Conclusion: The standing balance and gait characteristics of AIS patients are different from those of healthy subjects, as reflected in their three-dimensional spinopelvic radiographic parameters. Trial registration: The study protocol was registered with the Chinese Clinical Trial Registry (Number ChCTR1800018310) and the Human Subject Committee of Guangzhou Sport University (Number: 2018LCLL003).
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Affiliation(s)
- Yanan Liu
- Department of Sports Medicine, Guangzhou Sport University, Guangzhou, China
| | - Xianglan Li
- Department of Sports Medicine, Guangzhou Sport University, Guangzhou, China
| | - Xiaoran Dou
- Department of Sports Medicine, Guangzhou Sport University, Guangzhou, China
| | - Zhiguan Huang
- School of Sports and Health, Guangzhou Sport University, Guangzhou, China
| | - Jun Wang
- Gosun Medical Imaging Diagnosis Center of Guangdong Province, Guangzhou, China
| | - Bagen Liao
- Department of Sports Medicine, Guangzhou Sport University, Guangzhou, China
| | - Xiaohui Zhang
- Department of Sports Medicine, Guangzhou Sport University, Guangzhou, China
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Wang B, Sun Y, Guo X, Cao J, Lu H, Chen W, Chen J, Zhu Q, Zhang C, Zhang M, Zhu F. The efficacy of 3D personalized insoles in moderate adolescent idiopathic scoliosis: a randomized controlled trial. BMC Musculoskelet Disord 2022; 23:983. [PMCID: PMC9661798 DOI: 10.1186/s12891-022-05952-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Accepted: 11/06/2022] [Indexed: 11/16/2022] Open
Abstract
Abstract
Background
Bracing and exercise methods were used in scoliosis rehabilitation and proven effective. There was little evidence about the efficacy of insoles on scoliosis.
Objective
This study aimed to investigate the effects of 3D personalized insoles on curve magnitude, postural stability, and quality of life (QOL) in moderate adolescent idiopathic scoliosis (AIS) patients.
Methods
Thirty-six volunteers with adolescent idiopathic scoliosis, who had moderate curves (20°-45°), were randomly divided into the experimental and control groups. The control group received traditional rehabilitation with bracing and exercises, and the experimental group received the insole interventions in addition to traditional rehabilitation. The outcome measures were Cobb angle, angle of trunk rotation (ATR), postural stability, and quality of life (Scoliosis Research Society-22 questionnaire). Measurements were conducted at baseline examination, two months and six months.
Results
After two and six months of treatment, the Cobb angle and ATR in both groups were significantly decreased as compared with the baseline (p < 0.05), but no significant group difference in Cobb angle and ATR was found in the study (p > 0.05). There was a significant difference in the sagittal balance index at six months compared to the control group (p < 0.05), and a significant difference in the coronal balance index was observed at six months compared to baseline in the experimental group (p < 0.05). Quality of life did not change in either group (p > 0.05).
Conclusion
Combining bracing with exercise in patients with moderate AIS is effective. 3D personalized insoles cannot reduce the Cobb angle and angle of trunk rotation of patients with moderate AIS but might have the potential to improve postural stability.
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Storm FA, Redaelli DF, Biffi E, Reni G, Fraschini P. Additive Manufacturing of Spinal Braces: Evaluation of Production Process and Postural Stability in Patients with Scoliosis. MATERIALS (BASEL, SWITZERLAND) 2022; 15:6221. [PMID: 36143533 PMCID: PMC9502321 DOI: 10.3390/ma15186221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 09/05/2022] [Accepted: 09/06/2022] [Indexed: 06/16/2023]
Abstract
Spinal orthoses produced using additive manufacturing show great potential for obtaining patient-specific solutions in clinical applications, reducing manual operations, time consumption, and material waste. This study was conducted to evaluate the production process of spinal orthoses produced by additive manufacturing, and to test the effects of 3D-printed braces on postural stability in patients with adolescent idiopathic scoliosis and osteogenesis imperfecta. Ten patients were recruited consecutively and were asked to wear a spinal orthosis produced by additive manufacturing for 2 weeks. The four phases of the production process for each brace were evaluated separately on a scale from 0 (not acceptable) to 3 (optimal). Postural stability in the unbraced and the two braced conditions (3D-printed and conventional) was assessed using validated metrics obtained from a wearable inertial sensor. The production process was evaluated as good in four cases, acceptable in five cases, and not acceptable in one case, due to problems in the printing phase. No statistically significant differences were observed in any of the postural balance metrics between the 3D-printed and conventional brace. On the other hand, postural balance metrics improved significantly with both types of braces with respect to the unbraced condition. Spinal orthoses produced with an innovative production process based on digital scans, CAD, and 3D printing are valid alternatives to conventionally produced orthoses, providing equivalent postural stability.
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Postural control through force plate measurements in female AIS patients compared to their able-bodied peers. Sci Rep 2022; 12:13170. [PMID: 35915125 PMCID: PMC9343654 DOI: 10.1038/s41598-022-17597-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 07/27/2022] [Indexed: 11/08/2022] Open
Abstract
The present understanding of the mechanisms responsible for postural deficit in adolescent idiopathic scoliosis (AIS) is still insufficient. This is important because some authors see one of the causes of this disease in the impaired postural control. Moreover, there is a reciprocal link between the level of postural imbalance and the clinical picture of these people. Therefore, we compared the center-of-pressure (COP) indices of 24 patients with AIS to 48 controls (CON) during four 20-s quiet stance trials with eyes open (EO) or closed (EC) and on firm or foam surface. This included sway amplitude, speed, sample entropy and fractal dimension. AIS had poorer postural steadiness only in the most difficult trial. In the remaining trials, AIS did as well as CON, while presenting a greater COP entropy than CON. Thus, the factor that made both groups perform equally could be the increased sway irregularity in AIS, which is often linked to higher automaticity and lower attention involvement in balance control. After changing the surface from hard to foam, puzzling changes in sway fractality were revealed. The patients decreased the fractal dimension in the sagittal plane identically to the CON in the frontal plane. This may suggest some problems with the perception of body axes in patients and reveals a hitherto unknown cause of their balance deficit.
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Haddas R, Kosztowski T, Mar D, Boah A, Lieberman IH. Balance effort, Cone of Economy, and dynamic compensatory mechanisms in common degenerative spinal pathologies. Gait Posture 2021; 89:67-73. [PMID: 34243138 DOI: 10.1016/j.gaitpost.2021.04.038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 03/30/2021] [Accepted: 04/21/2021] [Indexed: 02/02/2023]
Abstract
BACKGROUND Changes in balance are common in individuals with spinal disorders and may cause falls. Balance efficiency, is the ability of a person to maintain their center of gravity with minimal neuromuscular energy expenditure, oftentimes referred to as Cone of Economy (CoE). CoE balance is defined by two sets of measures taken from the center of mass (CoM) and head: 1) the range-of-sway (RoS) in the coronal and sagittal planes, and 2) the overall sway distance. This allows spine caregivers to assess the severity of a patient's balance, balance pattern, and dynamic posture and record the changes following surgical intervention. Maintenance of balance requires coordination between the central nervous and musculoskeletal systems. RESEARCH QUESTION To discern differences in balance effort values between common degenerative spinal pathologies and a healthy control group. METHODS Three-hundred and forty patients with degenerative spinal pathologies: cervical spondylotic myelopathy (CSM), adult degenerative scoliosis (ADS), sacroiliac dysfunction (SIJD), degenerative lumbar spondylolisthesis (DLS), single-level lumbar degeneration (LD), and failed back syndrome (FBS), and 40 healthy controls were recruited. A functional balance test was performed approximately one week before surgery recorded by 3D video motion capture. RESULTS Balance effort and compensatory mechanisms were found to be significantly greater in degenerative spinal pathologies patients compared to controls. Head and Center of Mass (CoM) overall sway ranged from 65.22 to 92.78 cm (p < 0.004) and 35.77-53.31 cm (p < 0.001), respectively in degenerative spinal pathologies patients and in comparison to controls (Head: 44.52 cm, CoM: 22.24 cm). Patients with degenerative spinal pathologies presented with greater trunk (1.61-2.98°, p < 0.038), hip (4.25-5.87°, p < 0.049), and knee (4.55-6.09°, p < 0.036) excursion when compared to controls (trunk: 0.95°, hip: 2.97°, and knee: 2.43°). SIGNIFICANCE The results of this study indicate that patients from a wide variety of degenerative spinal pathologies similarly exhibit markedly diminished balance (and compensatory mechanisms) as indicated by increased sway on a Romberg test and a larger Cone of Economy (CoE) as compared to healthy controls. Balance effort, as measured by overall sway, was found to be approximately double in patients with degenerative spinal pathologies compared to healthy matched controls. Clinicians can compare CoE parameters among symptomatic patients from the different cohorts using the Haddas' CoE classification system to guide their postoperative prognosis.
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Affiliation(s)
| | | | - Damon Mar
- Texas Back Institute, Plano, TX, USA
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Haddas R, Wood A, Mar D, Derman P, Lieberman I. Reporting and tracking objective functional outcome measures: implementation of a summary report for gait and balance measures. Spine J 2021; 21:1193-1204. [PMID: 33631256 DOI: 10.1016/j.spinee.2021.02.015] [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: 08/06/2020] [Revised: 02/15/2021] [Accepted: 02/17/2021] [Indexed: 02/03/2023]
Abstract
The aim of this manuscript is to describe knowledge gaps in the literature, future directions, and emerging applications of gait and balance analysis in spine surgery with regard to functional outcomes measurement. Functional outcome measurement has been established as a useful clinical and research investigational tool in musculoskeletal disease. Evidence currently supports its use in the diagnosis, treatment, and outcome measurement of multiple musculoskeletal disease states, including spinal disease, and its usefulness continues to grow as literature develops. Gait and balance analysis has proven to be broadly applicable, but most clinicians remain unfamiliar and untrained in its usage. The logistical and communication barriers are also described with the potential solutions that are on the near horizon of research. This article describes our methodology for improving conveyance of functional outcome measures in spine surgery. Additionally, we provide a case example of an adult patient with spinal deformity who is examined pre and post operatively using our methodology.
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Affiliation(s)
| | - Addison Wood
- UNT Health Science Center, Fort Worth, TX, USA; John Peter Smith Hospital, Fort Worth, TX, USA
| | - Damon Mar
- Texas Back Institute, Plano, TX, USA
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Haddas R, Wood A, Lieberman I, Derman PB. Assessing the cone of economy in patients with spinal disease using only a force plate: an observational retrospective cohort study. 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 2021; 30:2504-2513. [PMID: 33877453 DOI: 10.1007/s00586-021-06836-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 03/15/2021] [Accepted: 04/03/2021] [Indexed: 11/24/2022]
Abstract
STUDY DESIGN This is a retrospective cohort with multiple regression modeling. OBJECTIVE The aim is to develop a new method for estimating cone of economy (CoE) using a force plate rather than traditional motion capture. BACKGROUND Currently, most spinal deformity surgeons rely on static radiographic parameters for alignment, balance, and outcomes data alongside patient-reported outcome measures. The CoE, the stable region of upright posture, can be objectively measured to determine the efficiency and balance of the spine. Motion capture technology is currently used to collect data to calculate CoE, but this requires expensive and complex equipment, which is a barrier to widespread adoption and clinical use of CoE measurements. Force plates, which measure pressure, are less expensive and can be used in a clinical setting. METHODS Motion capture and a force plate were used to quantify the CoE of 473 subjects (423 spinal surgical candidates; 50 healthy controls; 271 females; age: 58.60 ± 15.27; height: 1.69 ± 0.13; weight: 81.07 ± 20.91), and a linear multiple regression model was used to predict CoE using force plate data in a human motion laboratory setting. Patients were required to stand erect with feet together and eyes open in their self-perceived balanced and natural position for a full minute while measures of sway and center of pressure (CoP) were recorded. RESULTS The CoP variable regression model successfully predicted CoE measurements. The variables that were used to predict vertical CoE were CoP coronal sway, CoP sagittal sway, and CoP total sway in several combinations. The coefficient of determination for the head total sway model indicated a 87.0% correlation (F(3,469) = 1044.14, p < 0.001). The coefficient of determination for the head sagittal sway model indicated a 69.2% correlation (F(3,469) = 351.70, p < 0.001). The coefficient of determination for the head coronal sway model indicated a 85.2% correlation (F(3,469) = 899.27, p < 0001). CONCLUSION Cone of economy was estimated from force plate data using center of pressure with high correlation without the use of motion capture in healthy controls and a variety of spine patients. This could lower the entry burden for measurement of the CoE in patients, enabling widespread use. This would provide surgeons objective global balance data, along with Haddas' CoE classification system, that could assist with surgical decision-making and facilitate objective monitoring surgical outcomes.
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Affiliation(s)
- Ram Haddas
- Texas Back Institute, 6020 West Parker Road, Plano, TX, 75093, USA.
| | - Addison Wood
- UNT Health Science Center, Fort Worth, TX, USA.,John Peter Smith Hospital, Fort Worth, TX, USA
| | - Isador Lieberman
- Texas Back Institute, 6020 West Parker Road, Plano, TX, 75093, USA
| | - Peter B Derman
- Texas Back Institute, 6020 West Parker Road, Plano, TX, 75093, USA
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Wu KW, Lu TW, Lee WC, Ho YT, Wang JH, Kuo KN, Wang TM. Whole body balance control in Lenke 1 thoracic adolescent idiopathic scoliosis during level walking. PLoS One 2020; 15:e0229775. [PMID: 32142524 PMCID: PMC7059927 DOI: 10.1371/journal.pone.0229775] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Accepted: 02/13/2020] [Indexed: 11/20/2022] Open
Abstract
Introduction Altered trunk shape and body alignment in Lenke 1 thoracic adolescent idiopathic scoliosis (AIS) may affect the body’s balance control during activities. The current study aimed to identify the effects of Lenke 1 thoracic AIS on the balance control during level walking in terms of the inclination angles (IA) of the center of mass (COM) relative to the center of pressure (COP), the rate of change of IA (RCIA), and the jerk index of IA. The association between the Cobb angle, IA and RCIA was also evaluated. Materials and methods Sixteen adolescents with AIS (age: 14.0±1.8 years, height: 154.8±4.7 cm, mass: 42.0±7.5 kg) and sixteen healthy controls (age: 14.4±2.0 years, height: 158.4±6.2 cm, body mass: 48.6±8.9 kg) performed level walking in a gait laboratory. The kinematic and ground reaction force data were measured for both concave-side and convex-side limb cycles, and used to calculate the IA and RCIA, the jerk index of IA, and the temporal-spatial parameters. Correlations between the Cobb angle, IA and RCIA were quantified using Pearson’s correlation coefficients (r). Results The patients showed less smooth COM-COP motion with increased jerk index of IA in the sagittal plane during single limb support (SLS) of the concave-limb (p = 0.05) and in the frontal plane during double limb support (DLS) (p < 0.05). The patients also showed significantly increased posterior RCIA on both the concave and convex side during initial (p = 0.04, p = 0.03) and terminal (p = 0.04, p = 0.03) DLS when compared to healthy controls. In the frontal plane, the patients walking on the concave-side limb showed decreased IA over SLS (p = 0.01), and at contralateral toe-off (p<0.01) and contralateral heel-strike (p = 0.02), but increased mean IA magnitude over terminal DLS (p = 0.01). The frontal IA at contralateral toe-off and SLS for AIS-A showed a moderate to strong correlation with Cobb angles (r = -0.46 and -0.61), and the sagittal RCIA over the initial DLS for AIS-A also showed a significant, strong correlation with Cobb angles (r = -0.50). Conclusions The patients with Lenke 1 thoracic scoliosis in the current study showed altered and jerkier COM-COP control during level walking when compared to healthy controls. During DLS, the patients increased the posterior RCIA in the sagittal plane with increased IA jerk index in the frontal plane for both the concave- and the convex-side limb, indicating their difficulty in maintaining a smooth transfer of the body weight. During SLS of the concave-side limb, the patients adopted a conservative COM-COP control strategy, as indicated by a decreased IA in the frontal plane, but showed a jerky COM-COP control in the sagittal plane. The COM-COP control of the patients was associated with the severity of the spinal deformity. The current results suggest that this patient group should be monitored for signs of an increased risk of loss of balance during weight transfer on the concave-side limb.
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Affiliation(s)
- Kuan-Wen Wu
- Department of Biomedical Engineering, National Taiwan University, Taipei, Taiwan, R.O.C
- Department of Orthopaedic Surgery, School of Medicine, National Taiwan University, Taipei, Taiwan, R.O.C
- Department of Orthopaedic Surgery, National Taiwan University Hospital, Taipei, Taiwan, R.O.C
| | - Tung-Wu Lu
- Department of Biomedical Engineering, National Taiwan University, Taipei, Taiwan, R.O.C
- Department of Orthopaedic Surgery, School of Medicine, National Taiwan University, Taipei, Taiwan, R.O.C
| | - Wei-Chun Lee
- Department of Biomedical Engineering, National Taiwan University, Taipei, Taiwan, R.O.C
- Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, Taipei, Taiwan, R.O.C
| | - Ya-Ting Ho
- Department of Biomedical Engineering, National Taiwan University, Taipei, Taiwan, R.O.C
- Department of Orthopaedic Surgery, National Taiwan University Hospital, Taipei, Taiwan, R.O.C
| | - Jyh-Horng Wang
- Department of Orthopaedic Surgery, School of Medicine, National Taiwan University, Taipei, Taiwan, R.O.C
- Department of Orthopaedic Surgery, National Taiwan University Hospital, Taipei, Taiwan, R.O.C
| | - Ken N. Kuo
- Department of Orthopaedic Surgery, National Taiwan University Hospital, Taipei, Taiwan, R.O.C
| | - Ting-Ming Wang
- Department of Orthopaedic Surgery, School of Medicine, National Taiwan University, Taipei, Taiwan, R.O.C
- Department of Orthopaedic Surgery, National Taiwan University Hospital, Taipei, Taiwan, R.O.C
- * E-mail:
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Wu KW, Lu TW, Lee WC, Ho YT, Huang TC, Wang JH, Wang TM. Altered balance control in thoracic adolescent idiopathic scoliosis during obstructed gait. PLoS One 2020; 15:e0228752. [PMID: 32027721 PMCID: PMC7004377 DOI: 10.1371/journal.pone.0228752] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 01/22/2020] [Indexed: 11/30/2022] Open
Abstract
Adolescent idiopathic scoliosis (AIS) is the most common spinal deformity during adolescence, leading to altered postural control with compromised stability. To identify the effects of AIS on whole-body balance control during obstacle-crossing, 14 adolescents with Lenke 1 thoracic AIS and 14 healthy controls were compared in terms of the inclination angle (IA) of the body’s center of mass (COM) relative to the center of pressure (COP), the rate of change of IA (RCIA) and the jerk index of IA. Between-side comparisons were also performed for the AIS group. The patients showed less smooth COM-COP motion in the sagittal plane with significantly increased anterior RCIA and IA jerk index during crossing with either the concave side (p = 0.001) or the convex side (p = 0.001) leading when compared to healthy controls. In the frontal plane, the patients showed close-to-zero RCIA (p = 0.002) while crossing with the leading limb, with an increased IA magnitude (p = 0.039) only while crossing with the concave-side limb leading. The patients with Lenke 1 thoracic AIS were found to cross obstacles with altered, compromised COM-COP control in both sagittal and frontal planes when compared to healthy controls. The results suggest that the thoracic spinal deformity in Lenke 1 AIS affects the whole-body balance control during obstacle-crossing, which should be monitored for signs of increased risk of loss of balance in the management of such patient groups.
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Affiliation(s)
- Kuan-Wen Wu
- Department of Biomedical Engineering, National Taiwan University, Taiwan, ROC
- Department of Orthopaedic Surgery, School of Medicine, National Taiwan University, Taiwan, ROC
- Department of Orthopaedic Surgery, National Taiwan University Hospital, Taiwan, ROC
| | - Tung-Wu Lu
- Department of Biomedical Engineering, National Taiwan University, Taiwan, ROC
- Department of Orthopaedic Surgery, School of Medicine, National Taiwan University, Taiwan, ROC
| | - Wei-Chun Lee
- Department of Biomedical Engineering, National Taiwan University, Taiwan, ROC
- Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, Taiwan, ROC
| | - Ya-Ting Ho
- Department of Biomedical Engineering, National Taiwan University, Taiwan, ROC
- Department of Orthopaedic Surgery, National Taiwan University Hospital, Taiwan, ROC
| | - Ting-Chun Huang
- Department of Orthopaedic Surgery, Chu-Tung Branch, National Taiwan University Hospital, Taiwan, ROC
| | - Jyh-Horng Wang
- Department of Orthopaedic Surgery, School of Medicine, National Taiwan University, Taiwan, ROC
- Department of Orthopaedic Surgery, National Taiwan University Hospital, Taiwan, ROC
| | - Ting-Ming Wang
- Department of Orthopaedic Surgery, School of Medicine, National Taiwan University, Taiwan, ROC
- Department of Orthopaedic Surgery, National Taiwan University Hospital, Taiwan, ROC
- * E-mail:
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Piątek E, Kuczyński M, Ostrowska B. Postural control in girls with adolescent idiopathic scoliosis while wearing a Chêneau brace or performing active self-correction: a pilot study. PeerJ 2019; 7:e7513. [PMID: 31528504 PMCID: PMC6717654 DOI: 10.7717/peerj.7513] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Accepted: 07/18/2019] [Indexed: 01/11/2023] Open
Abstract
Background It is known that adolescent idiopathic scoliosis (AIS) is often accompanied by balance deficits. This reciprocal relationship must be taken into account when prescribing new therapeutic modalities because these may differently affect postural control, interacting with therapy and influencing its results. Objective The purpose was to compare postural control in girls with AIS while wearing the Chêneau brace (BRA) or performing active self-correction (ASC) with their postural control in a quiet comfortable stance. Methods Nine subjects were evaluated on a force plate in three series of two 20-s quiet standing trials with eyes open or closed; three blocks were randomly arranged: normal quiet stance (QST), quiet stance with BRA, and quiet stance with ASC. On the basis of centre-of-pressure (COP) recordings, the spatial and temporal COP parameters were computed. Results and Discussion Performing ASC was associated with a significant backward excursion of the COP mean position with eyes open and closed (ES = 0.56 and 0.65, respectively; p < 0.05). This excursion was accompanied by an increase in the COP fractal dimension (ES = 1.05 and 0.98; p < 0.05) and frequency (ES = 0.78; p = 0.10 and ES = 1.14; p < 0.05) in the mediolateral (ML) plane. Finally, both therapeutic modalities decreased COP sample entropy with eyes closed in the anteroposterior (AP) plane. Wearing BRA resulted in ES = 1.45 (p < 0.05) while performing ASC in ES = 0.76 (p = 0.13). Conclusion The observed changes in the fractal dimension (complexity) and frequency caused by ASC account for better adaptability of patients to environmental demands and for their adequate resources of available postural strategies in the ML plane. These changes in sway structure were accompanied by a significant (around 25 mm) backward excursion of the mean COP position. However, this improvement was achieved at the cost of lower automaticity, i.e. higher attentional involvement in postural control in the AP plane. Wearing BRA may have an undesirable effect on some aspects of body balance.
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Affiliation(s)
- Elżbieta Piątek
- Faculty of Physiotherapy, University School of Physical Education in Wroclaw, Wrocław, Poland
| | - Michał Kuczyński
- Faculty of Physical Education and Physiotherapy, Opole University of Technology, Opole, Poland
| | - Bożena Ostrowska
- Faculty of Physiotherapy, University School of Physical Education in Wroclaw, Wrocław, Poland
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Kruger KM, Garman CMR, Krzak JJ, Graf A, Hassani S, Tarima S, Sturm PF, Hammerberg KW, Gupta P, Harris GF. Effects of Spinal Fusion for Idiopathic Scoliosis on Lower Body Kinematics During Gait. Spine Deform 2019; 6:441-447. [PMID: 29886917 DOI: 10.1016/j.jspd.2017.12.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 12/11/2017] [Accepted: 12/15/2017] [Indexed: 11/19/2022]
Abstract
STUDY DESIGN Prospective. OBJECTIVES The purpose of this study was to compare gait among patients with scoliosis undergoing posterior spinal fusion and instrumentation (PSFI) to typically developing subjects and determine if the location of the lowest instrumented vertebra impacted results. SUMMARY OF BACKGROUND DATA PSFI is the standard of care for correcting spine deformities, allowing the preservation of body equilibrium while maintaining as many mobile spinal segments as possible. The effect of surgery on joint motion distal to the spine must also be considered. Very few studies have addressed the effect of PSFI on activities such as walking and even fewer address how surgical choice of the lowest instrumented vertebra (LIV) influences possible motion reduction. METHODS Individuals with scoliosis undergoing PSFI (n = 38) completed gait analysis preoperatively and at postoperative years 1 and 2 along with a control group (n = 24). Comparisons were made with the control group at each time point and between patients fused at L2 and above (L2+) versus L3 and below (L3-). RESULTS The kinematic results of the AIS group showed some differences when compared to the Control Group, most notably decreased range of motion (ROM) in pelvic tilt and trunk lateral bending. When comparing the LIV groups, only minor differences were observed, and the results showed decreased coronal trunk and pelvis ROM at the one-year visit and decreased hip rotation ROM at the two-year visit in the L3- group. CONCLUSIONS Patients with AIS showed decreased ROM preoperatively with further decreases postoperatively. These changes remained relatively consistent following the two-year visit, indicating that most kinematic changes occurred in the first year following surgery. Limited functional differences between the two LIV groups may be due to the lack of full ROM used during normal gait, and future work could address tasks that use greater ROM. LEVEL OF EVIDENCE Level II.
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Affiliation(s)
- Karen M Kruger
- Orthopaedic & Rehabilitation Engineering Center, Marquette University, 1250 W Wisconsin Ave, Milwaukee, WI 53233, USA.
| | - Christina M R Garman
- Orthopaedic & Rehabilitation Engineering Center, Marquette University, 1250 W Wisconsin Ave, Milwaukee, WI 53233, USA
| | - Joseph J Krzak
- Orthopaedic & Rehabilitation Engineering Center, Marquette University, 1250 W Wisconsin Ave, Milwaukee, WI 53233, USA; Motion Analysis Laboratory, Shriners Hospitals for Children, 2211 N Oak Park Ave, Chicago, IL 60707, USA; College of Health Sciences, Midwestern University, 555 31st, Downers Grove, IL 60515, USA
| | - Adam Graf
- Orthopaedic & Rehabilitation Engineering Center, Marquette University, 1250 W Wisconsin Ave, Milwaukee, WI 53233, USA; Motion Analysis Laboratory, Shriners Hospitals for Children, 2211 N Oak Park Ave, Chicago, IL 60707, USA
| | - Sahar Hassani
- Motion Analysis Laboratory, Shriners Hospitals for Children, 2211 N Oak Park Ave, Chicago, IL 60707, USA
| | - Sergey Tarima
- Division of Biostatistics, Medical College of Wisconsin, 8701 W. Watertown Plank Rd, Milwaukee, WI 53226, USA
| | - Peter F Sturm
- Division of Orthopaedic Surgery, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave, Cincinnati, OH 45229, USA
| | - Kim W Hammerberg
- Motion Analysis Laboratory, Shriners Hospitals for Children, 2211 N Oak Park Ave, Chicago, IL 60707, USA
| | - Purnendu Gupta
- Motion Analysis Laboratory, Shriners Hospitals for Children, 2211 N Oak Park Ave, Chicago, IL 60707, USA
| | - Gerald F Harris
- Orthopaedic & Rehabilitation Engineering Center, Marquette University, 1250 W Wisconsin Ave, Milwaukee, WI 53233, USA; Motion Analysis Laboratory, Shriners Hospitals for Children, 2211 N Oak Park Ave, Chicago, IL 60707, USA
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Dufvenberg M, Adeyemi F, Rajendran I, Öberg B, Abbott A. Does postural stability differ between adolescents with idiopathic scoliosis and typically developed? A systematic literature review and meta-analysis. SCOLIOSIS AND SPINAL DISORDERS 2018; 13:19. [PMID: 30186976 PMCID: PMC6120087 DOI: 10.1186/s13013-018-0163-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Accepted: 07/11/2018] [Indexed: 01/01/2023]
Abstract
BACKGROUND Postural stability deficits have been proposed to influence the onset and progression of adolescent idiopathic scoliosis (AIS). This study aimed to systematically identify, critically evaluate and meta-analyse studies assessing postural stability during unperturbed stance with posturography in AIS compared to typically developed adolescents. METHODS Studies from four electronic databases (PubMed, Scopus, CINAHL, PEDro) were searched and case-control methodological quality assessed using a risk-of-bias assessment tool and a posturography methodological quality checklist. Pooled data regarding centre of pressure (COP) parameters such as sway area, Mediolateral (ML) and Anteroposterior (AP) position and range were compared for AIS and typically developed adolescents using Cohen's d effect size (ES) and homogeneity estimates. RESULTS Eighteen studies for quality analysis and 9 of these for meta-analysis were identified from 971 records. Risk-of-bias assessment identified 6 high, 10 moderate and 2 low risk-of-bias studies. The posturography methodological quality checklist identified 4 low, 7 moderate and 7 high-quality studies. Meta-analysis was performed for sway area whereas ML and AP are presented in three different meta-analyses due to divergent measurement units used in the studies: ML position 1 (MLP1), ML position 2 (MLP2) and ML range (MLR); AP position 1 (APP1), AP position 2 (APP2) and AP range (APR). Cohen's d showed a medium ES difference in sway area 0.65, 95% CI (0.49-0.63), whereas ML showed no (MLP1, MLP2) and large (MLR) ES differences; MLP1 0.15, 95% CI (0.08-0.22); MLP2 0.14, 95% CI (0.08-0.19); and MLR 0.94, 95% CI (0.83-1.04). Cohen's d for AP showed small ES (APP1) and large ES difference (APP2 and APR); APP1 0.43, 95% CI (0.31-0.54); APP2 0.85, 95% CI (0.72-0.97); and APR 0.98, 95% CI (0.87-1.09). Cochran's Q and Higgins I2 showed homogeneity between studies. CONCLUSIONS There is moderate quality evidence for decreased postural stability in AIS measured as COP parameters sway area, ML and AP range with a positional shift posteriorly in the sagittal plane. The findings support studying postural stability in early stage AIS and also prospectively identify cause and effect of the curvature as well as effectiveness of postural control interventions in the prevention of scoliosis progression.
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Affiliation(s)
- Marlene Dufvenberg
- Department of Medical and Health Sciences, Division of Physiotherapy, Linkoping University, 581 83 Linkoping, Sweden
| | - Fisayo Adeyemi
- Department of Clinical and Rehabilitation Services, Faculty of Health Science and Medicine, Bond Institute of Health and Sport, Bond University, 2 Promethean Way, Robina, QLD 4226 Australia
| | - Isabelle Rajendran
- Department of Clinical and Rehabilitation Services, Faculty of Health Science and Medicine, Bond Institute of Health and Sport, Bond University, 2 Promethean Way, Robina, QLD 4226 Australia
| | - Birgitta Öberg
- Department of Medical and Health Sciences, Division of Physiotherapy, Linkoping University, 581 83 Linkoping, Sweden
| | - Allan Abbott
- Department of Medical and Health Sciences, Division of Physiotherapy, Linkoping University, 581 83 Linkoping, Sweden
- Department of Clinical and Rehabilitation Services, Faculty of Health Science and Medicine, Bond Institute of Health and Sport, Bond University, 2 Promethean Way, Robina, QLD 4226 Australia
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