Acta of bioengineering and biomechanics最新文献

IF 1 4区医学

Acta of bioengineering and biomechanics Pub Date : 2023-01-01

Kayla Sisneros, Pratibha Maurya, Evan Johnson, Benton Ford, T Y Palmer

{"title":"Age-related differences in vertical jump height and handgrip strength measurements.","authors":"Kayla Sisneros, Pratibha Maurya, Evan Johnson, Benton Ford, T Y Palmer","doi":"","DOIUrl":"","url":null,"abstract":"Purpose: This study aimed to examine the effects of age on vertical jump height and handgrip strength measurements in women. A secondary aim was to investigate the correlations between vertical jump height and handgrip strength.Methods: Twenty young (21.5 ± 2.8 years) and twenty older (67.0 ± 5.5 years) healthy women participated in this study. Handgrip contractions were used to assess strength measurements of peak force and rate of force development at different time intervals. Vertical jumps were performed on a jump mat. The jump mat measured vertical jump height based on flight time.Results: The older women had lower vertical jump height (P < 0.001) and handgrip peak force (P = 0.028) and rate of force development values (P = 0.003-0.016) than the younger women. A larger difference was observed between the groups for vertical jump height (41%) than handgrip peak force and rate of force development (12-17%). Of all the strength measurements, handgrip rate of force development at 200 ms in the young (r = 0.502, P = 0.024) and older (r = 0.446, P = 0.049) women exhibited the strongest correlation with vertical jump height.Conclusions: This investigation showed significantly lower vertical jump height and handgrip peak force and rate of force development values in older compared to younger women. Interestingly, the difference between age groups was larger for jump height than handgrip peak force and rate of force development. This suggests that vertical jump performance may be more severely affected by age than handgrip strength characteristics.","PeriodicalId":6897,"journal":{"name":"Acta of bioengineering and biomechanics","volume":"25 1","pages":"19-26"},"PeriodicalIF":1.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139680458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamic-passive correction of hallux valgus and associated static foot deformities. 动态-被动矫正足外翻及相关的足部静态畸形。

IF 1 4区医学

Acta of bioengineering and biomechanics Pub Date : 2023-01-01

Jacek Dygut, Joanna Strąk, Jerzy Detyna, Monika Piwowar

{"title":"Dynamic-passive correction of hallux valgus and associated static foot deformities.","authors":"Jacek Dygut, Joanna Strąk, Jerzy Detyna, Monika Piwowar","doi":"","DOIUrl":"","url":null,"abstract":"Purpose: The aim of this paper was the application of a new dynamic-passive method of treatment in correction of hallux valgus and coexisting static deformities of the foot (transverse-plane and plano-valgus foot).Methods: The study involved 50 patients; 26 with full big toe correction after the passive correction grip (group I) and 24 with big toe correction requiring additional passive abduction (group II). The patients regularly performed exercises using the designed device according to the planned schedule. The progress of the correction was assessed by a medical examination and additional tests.Results: The cross-sectional area [cm2 ] of the abductor hallucis muscle in three-time points among I and II groups of patients with the hallux valgus was measured based on MRI images. The STIR examination showed, among others, the abductor hallucis muscle edema after exercises with the DPc device were carried out. It evidences that exercises with the new device activate the muscle. Alignment of the big toes of both feet in groups I and II were obtained with a statistically significant result ( p < 0.05). The percentage progression of correction for HV and I/II IM was calculated.Conclusions: Based on the new correction approach the alignment of the big toe phalanges and the remaining toes was obtained. The passive setup of the tendons with their distal inserts at the level of the big toe phalanges to the correct path of their course with the withdrawal of articular subluxations was obtained. Simultaneously, the big toe's passive correction was dynamically consolidated through a specially selected set of exercises.","PeriodicalId":6897,"journal":{"name":"Acta of bioengineering and biomechanics","volume":"25 1","pages":"65-77"},"PeriodicalIF":1.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139680495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of volleyball players' force generation during jump spike from the perspective of electromyographic characteristics. 从肌电图特征角度分析排球运动员在跳起扣球时的发力。

IF 1 4区医学

Acta of bioengineering and biomechanics Pub Date : 2023-01-01

Z I Wang, Min Zhao

{"title":"Analysis of volleyball players' force generation during jump spike from the perspective of electromyographic characteristics.","authors":"Z I Wang, Min Zhao","doi":"","DOIUrl":"","url":null,"abstract":"Purpose: The aim of this study was to investigate the force characteristics of novice athletes and professional athletes in completing a cross spike at position four from the perspective of electromyographic characteristics.Methods: Ten novice and ten professional athletes were selected as subjects. The electromyographic characteristics of the athletes were obtained by the Noraxon Ultium electromyography (EMG) and compared.Results: In the first stage, i.e., the takeoff stage, the activation level of the rectus abdominis and external abdominal obliques was significantly higher in the professional group (p<0.05). During the second stage, i.e., the stage of flying to hit the ball, the professional group had a higher integrated electromyography (iEMG) value in the trapezius. Moreover, it showed significantly higher muscle contribution from the rectus abdominis (5.59 ± 1.58%), external abdominal obliques (3.67 ± 1.21%), and trapezius (10.12 ± 2.61%) compared to the novice group (p<0.05). In the third stage, i.e., the stage of landing and buffering, p<0.05 in the comparison of the iEMG values of trapezius and gluteus maximus between the two groups. Moreover, the professional group exhibited higher muscle activation levels in all muscles except for the gastrocnemius, compared to the novice group (p<0.05).Conclusions: Professional athletes display superior muscle coordination and more effective muscle force generation in the trunk and lower limbs during the execution of the jump spike action.","PeriodicalId":6897,"journal":{"name":"Acta of bioengineering and biomechanics","volume":"25 2","pages":"147-155"},"PeriodicalIF":1.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139680545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of pulse laser treatment at different process variables on mechanical behavior of carbon nanotubes electrophoretically deposited on titanium alloy. 不同工艺变量下的脉冲激光处理对电泳沉积在钛合金上的碳纳米管力学行为的影响

IF 1 4区医学

Acta of bioengineering and biomechanics Pub Date : 2023-01-01

Beata Majkowska-Marzec, Kacper Staszewski, Joanna Sypniewska

{"title":"Effect of pulse laser treatment at different process variables on mechanical behavior of carbon nanotubes electrophoretically deposited on titanium alloy.","authors":"Beata Majkowska-Marzec, Kacper Staszewski, Joanna Sypniewska","doi":"","DOIUrl":"","url":null,"abstract":"Purpose: Titanium and its alloys are widely used as biomaterials for long-term implants, but they are usually surface-modified due to their weak bioactivity and wear resistance. Laser processing was used to modify the surface layer, and elemental carbon was a component of the deposited coatings. This research aims to use a combination of both methods based on preliminary electrophoretic deposition of multi-wall carbon nanotubes (MWNCTs) followed by pulse laser treatment. Carbon nanotubes were chosen due to their mechanical and chemical stability as well as their tubular shape, resulting in enhanced mechanical properties of laser-modified layers.Methods: The pulse laser power and laser scanning speed were defined as variable process parameters. The microstructure, roughness Ra, nanohardness H, Young's modulus E, and indent depth values were measured, and the H/E, H 3/E2, and relative changes of all these values in comparison to MWCNTs-coated and non-coated surfaces, were calculated.Results: The obtained results show that the best mechanical properties of MWCNTs-coated and laser-treated specimens are obtained at a laser power of 900 W and laser feed of 6 mm/s. The observed relations can be explained considering processes occurring on the surface such as deposition of carbon nanotubes, melting and re-crystallization of the surface layer, formation and possible partial decomposition of titanium carbides, and associated changes in local chemical composition, phase composition, and a level of residual stresses beneath the surface.Conclusions: The developed process can substitute the time and money-consuming carbonization of titanium and its alloys.","PeriodicalId":6897,"journal":{"name":"Acta of bioengineering and biomechanics","volume":"25 2","pages":"157-168"},"PeriodicalIF":1.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139680550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Quantitative evaluation f stereoscopic augmented reality visualization using an optical see-through head-mounted display. 使用光学透视头戴式显示器对立体增强现实可视化进行定量评估。

IF 1 4区医学

Acta of bioengineering and biomechanics Pub Date : 2023-01-01

Magdalena Żuk, Marcin Majak, Izabela Szczur, Michał Popek, Ewelina Świątek-Najwer

{"title":"Quantitative evaluation f stereoscopic augmented reality visualization using an optical see-through head-mounted display.","authors":"Magdalena Żuk, Marcin Majak, Izabela Szczur, Michał Popek, Ewelina Świątek-Najwer","doi":"","DOIUrl":"","url":null,"abstract":"Purpose: The authors of the current study aimed to propose a calibration method for accurate augmented reality visualisation using an optical see-through head-mounted display, and to qualitatively evaluate visualisation accuracy for the application in computer assisted surgery.Methods: An adaptation of stereo single-point active alignment method was proposed as the calibration procedure together with verification. Three tests were performed: display of points in 3D space, on the plane and on the surface of a skull phantom on inexperience users (5 participants) and experienced users (17 participants).Results: The highest accuracy of visualization was obtained for skull phantom visualisation for an inexperienced user (3.00 mm, std 0.75 mm), while the lowest accuracy was obtained in a 3D visualisation test for an inexperienced user (22.95 mm, std 18.04 mm). The largest error was related to the depth component and amounted to 18.49 mm, std 18.10 mm for an inexperienced user.Conclusions: It is possible to achieve relatively high visualisation accuracy (less than 5 mm for visualisation in space) for selected users but providing it for the group of inexperienced users seems to remain a major challenge. The accuracy of point indication can be substantially and statistically significantly increased by visualising objects on surfaces. The proposed methods and obtained results can serve as a basis for further implementation of augmented reality visualisation on an optical see-through head-mounted display in applications requiring high-quality augmented reality guidance of manual tasks.","PeriodicalId":6897,"journal":{"name":"Acta of bioengineering and biomechanics","volume":"25 1","pages":"173-182"},"PeriodicalIF":1.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139680500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Relationship of lumbar-hip kinematics during trunk flexion and sex, body mass index, and self-reported energy expenditure: a cross-sectional analysis. 躯干屈曲时腰部-臀部运动学与性别、体重指数和自我报告的能量消耗的关系：横断面分析。

IF 1 4区医学

Acta of bioengineering and biomechanics Pub Date : 2023-01-01

Magdalena Zawadka, Jakub Smołka, Maria Skublewska-Paszkowska, Edyta Łukasik, Grzegorz Zieliński, Piotr Gawda

{"title":"Relationship of lumbar-hip kinematics during trunk flexion and sex, body mass index, and self-reported energy expenditure: a cross-sectional analysis.","authors":"Magdalena Zawadka, Jakub Smołka, Maria Skublewska-Paszkowska, Edyta Łukasik, Grzegorz Zieliński, Piotr Gawda","doi":"","DOIUrl":"","url":null,"abstract":"Purpose: Physical activity (PA) is a well-known, simple and effective preventive and therapeutic intervention for low back pain (LBP). In spite of the growing interest in active lifestyles and its benefits, more needs to be known about the relationship between energy expenditure, body mass and lumbar-pelvic kinematics during the forward bending movement in a group of young asymptomatic people who met PA guidelines. Young people can be identified as a future risk group of civilisation diseases and lumbar-hip kinematics can be considered as a predictor of LBP occurrence. The aim of this study was to identify the association of gender, self-reported energy expenditure, body mass index, and lumbar-hip kinematics in young people.Methods: Sixty-four students at pre-employment stage participated in the study. They declared moderate-to-high PA and activity-induced energy expenditure (AEE) was self-reported. Kinematic data of the lumbar spine, pelvis and hip were collected during forward bending using a 3D motion capture system.Results: Sex was found to be associated with pelvis (β = -0.38 p = 0.002) and lumbar mobility (β = 0.49, p < 0.001) during forward bending and BMI was related only to lumbar mobility (β = -0.41, p = 0.001). Recreation AEE significantly predicted hip flexion mobility (β = 0.38, p = 0.002).Conclusions: This study showed that among a sample of physically active young people, BMI, self-reported AEE and sex can partially predict lumbar-hip kinematics during trunk flexion. Recreational PA can be regarded as improving hip mobility and thus making forward bending more effective and less prone to injury.","PeriodicalId":6897,"journal":{"name":"Acta of bioengineering and biomechanics","volume":"25 1","pages":"55-64"},"PeriodicalIF":1.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139680502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental research of energy absorbing structures within helmet samples made with the additive manufacturing method - preliminary study. 用增材制造法制造的头盔样品内部吸能结构的实验研究--初步研究。

IF 1 4区医学

Acta of bioengineering and biomechanics Pub Date : 2023-01-01

Wojciech Toboła, Mateusz Papis, Dominik Jastrzębski, Rafał Perz

{"title":"Experimental research of energy absorbing structures within helmet samples made with the additive manufacturing method - preliminary study.","authors":"Wojciech Toboła, Mateusz Papis, Dominik Jastrzębski, Rafał Perz","doi":"","DOIUrl":"","url":null,"abstract":"Purpose: This study aimed to develop an energy-absorbing structure for bicycle helmets to minimize head injuries caused by collisions. The research team explored three geometric structures produced through additive methods and compares their energy absorption properties with a standard bicycle helmet made of Expanded Polystyrene (EPS) foam.Methods: The study prepared samples of three geometric structures (a ball, a honeycomb and a conical shape) and a fragment of a bicycle helmet made of EPS foam with the same overall dimensions. Laboratory tests were conducted using a pneumatic hammer, piston compressor, anvil, triaxial accelerometer and data processing systems. Three crash tests were performed for each type of structure, and the anvil's maximum acceleration and stopping distance after the crash were analyzed.Results: The study found that the energy absorption properties of the Polylactic Acid (PLA) material printed with the incremental method were comparable or better than those of the EPS material used in helmets. The geometric structure of the energy-absorbing material played a crucial role in its effectiveness. The most promising results were obtained for the ball samples.Conclusions: The study concluded that further research on energy-absorbing structures made using the Fused Deposition Modeling (FDM) method could be useful in the production of bicycle helmets. The results show that the geometric structure of the energy-absorbing material is a crucial factor in its effectiveness. The findings suggest that the ballshaped structure made with PLA material printed using the incremental method could be a promising design for bicycle helmets to minimize head injuries caused by collisions.","PeriodicalId":6897,"journal":{"name":"Acta of bioengineering and biomechanics","volume":"25 1","pages":"127-136"},"PeriodicalIF":1.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139680497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The impact of fatigue on static balance in people with chronic ankle instability. 疲劳对慢性踝关节不稳患者静态平衡的影响。

IF 1 4区医学

Acta of bioengineering and biomechanics Pub Date : 2023-01-01

Małgorzata Kowalczyk, Aleksandra Truszczyńska-Baszak

{"title":"The impact of fatigue on static balance in people with chronic ankle instability.","authors":"Małgorzata Kowalczyk, Aleksandra Truszczyńska-Baszak","doi":"","DOIUrl":"","url":null,"abstract":"Purpose: The aim of the study was to assess static postural stability under fatigue in subjects with chronic ankle instability - \"copers\" in comparison with healthy controls.Methods: We conducted a prospective study on a group of 60 young, physically active subjects, divided into 3 groups: I - 14 subjects with unilateral ankle instability, II - 15 subjects with bilateral ankle instability, III - 31 healthy subjects, without ankle instability. The fatigue trial was based on modified Short-Term Fatigue Protocol. Static stabilography was performed with the use of HUR platform.Results: showed an increase in the value of COP trace length after fatigue test in study population I. The level of COP trace length Z before fatigue was significantly lower than after fatigue. Subjects from study population I had higher levels of COP trace length Z in comparison with the control group. The main effect for the group also proved to be significant. Study population I had higher levels of COP trace length Z in comparison with the control group. For the measurement after fatigue, there was significant difference only between the study population I and the control group.Conclusions: The incidence of structural ankle instability was not correlated with functional instability. Subjects with ankle instability, or \"copers\", had good functional levels, enabling them to perform sports activities. \"Copers\" had weakened proprioception in static stabilography tests. Short and intense fatigue protocol weakened the ability to maintain balance in static stabilography test with eyes closed.","PeriodicalId":6897,"journal":{"name":"Acta of bioengineering and biomechanics","volume":"25 1","pages":"151-160"},"PeriodicalIF":1.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139680504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The viscoelasticity, anisotropy and location-dependence of mechanical properties of rabbit iris investigated using uniaxial tensile tests. 利用单轴拉伸试验研究兔虹膜的粘弹性、各向异性和机械性能的位置依赖性。

IF 1 4区医学

Acta of bioengineering and biomechanics Pub Date : 2023-01-01

Tan Li, Xiao Qin, Zhicheng Liu, Haixia Zhang, Lin Li

{"title":"The viscoelasticity, anisotropy and location-dependence of mechanical properties of rabbit iris investigated using uniaxial tensile tests.","authors":"Tan Li, Xiao Qin, Zhicheng Liu, Haixia Zhang, Lin Li","doi":"","DOIUrl":"","url":null,"abstract":"Purpose: Abnormal iris mechanical properties have been considered to be an important cause of pupillary-block and angle-closure glaucoma. In this research, viscoelasticity, anisotropy and location-dependence of mechanical properties of rabbit iris were investigated using uniaxial tensile test.Methods: Iris strips were taken along three directions: inner-circumferential direction (ICD), outer-circumferential direction (OCD) and radial direction (RD), respectively. Quasi-static tensile tests and stress-relaxation tests were applied on the iris strips. Then, the stress-stretch data was fitted with third order Ogden model; the stress-relaxation data was fitted with the third order Prony series model. Through comparing the tangent modulus and relaxation limit of the strips from different directions and locations, the viscoelasticity, anisotropy and location-dependence of mechanical properties of rabbit iris were explored.Results: The tangent moduli of iris at the stretch of 1.05 along ICD, OCD, and RD were 3.2 ± 1.4 kPa, 4.2 ± 2.6 kPa, 1.5 ± 0.8 kPa, respectively. Iris strips in ICD and OCD were found to have almost the same stress-relaxation behavior, and both relaxed slower than iris strips in RD.Conclusions: The mechanical properties of the iris were typically nonlinear, viscoelastic, anisotropic and location-dependent. The stress growth rate of the circumferential direction iris strip is significantly lower than that of RD and the stress-relaxation rate is significantly higher than that of the RD. That is, the iris is more prone to deformation in RD and the stress-retention ability after deformation in RD is weak, which is consistent with the fact that the iris bombe more likely happens in RD in vivo. The results of this study may also help us to establish a more accurate finite element model to simulate the flow field of humor aqueous and find the key factor of pupillary-block.","PeriodicalId":6897,"journal":{"name":"Acta of bioengineering and biomechanics","volume":"25 2","pages":"85-92"},"PeriodicalIF":1.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139680586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamic-passive correction of hallux valgus and associated static foot deformities 拇外翻及相关静足畸形的动态被动矫正

4区医学

Acta of bioengineering and biomechanics Pub Date : 2023-01-01 DOI: 10.37190/abb-02200-2023-02

Jacek M. Dygut, Joanna Strąk, Jerzy Detyna, Monika W. Piwowar

{"title":"Dynamic-passive correction of hallux valgus and associated static foot deformities","authors":"Jacek M. Dygut, Joanna Strąk, Jerzy Detyna, Monika W. Piwowar","doi":"10.37190/abb-02200-2023-02","DOIUrl":"https://doi.org/10.37190/abb-02200-2023-02","url":null,"abstract":"Purpose The paper presents, the effects of hallux valgus correction and coexisting static deformities of the foot (transversely-plano and plano-valgus foot) obtained with a new dynamic-passive method of treatment. Methods The study involved 50 patients; 26 with full big toe correction after the passive correction grip (group I) and 24 with big toe correction requiring additional passive abduction (group II). The patients regularly performed exercises using the designed device according to the planned schedule. The progress of the correction was assessed by a medical examination and additional tests. Results Results: The cross-sectional area [cm2] of the abductor hallucis muscle in three-time points among I and II groups of patients with the Hallux Valgus was measured based on MRI images. The STIR examination showed among other the abductor hallucis muscle edema after exercises with the DPc device were carried out. It evidences that exercises with the new device activate the muscle. Alignment of the big toes of both feet in groups I and II were obtained with a statistically significant result (p<0.05). The percentage progression of correction for HV and I/II IM was calculated. Conclusions Based on the new correction approach the alignment of the big toe phalanges and the remaining toes was obtained. The passive setup of the tendons with their distal inserts at the level of the big toe phalanges to the correct path of their course with the withdrawal of articular subluxations was obtained. Simultaneously, the big toe's passive correction was dynamically consolidated through a specially selected set of exercises.","PeriodicalId":6897,"journal":{"name":"Acta of bioengineering and biomechanics","volume":"393 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136301463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0