ACTA OF BIOENGINEERING AND BIOMECHANICS 是一个平台，允许在具有技术和医学背景的研究人员之间展示调查结果、交流想法和经验。在 ACTA OF BIOENGINEERING AND BIOMECHANICS 上发表的论文可能涵盖生物力学的广泛主题，包括但不限于TO：组织生物力学，骨科生物力学，生物材料，运动生物力学。

The Acta of Bioengineering and Biomechanics is a platform designed to facilitate the presentation of research findings, exchange of ideas, and sharing of experiences among researchers with technical and medical backgrounds. Papers published in the Acta of Bioengineering and Biomechanics may cover a wide range of topics in biomechanics, including but not limited to tissue biomechanics, orthopedic biomechanics, biomaterials, and sports biomechanics.

《Acta of Bioengineering and Biomechanics》是一个平台，旨在促进具有技术和医学背景的研究人员之间的调查结果展示、思想交流和经验分享。在《Acta of Bioengineering and Biomechanics》上发表的论文涵盖生物力学的广泛主题，包括但不限于组织生物力学、骨科生物力学、生物材料和运动生物力学等领域。

Acta of Bioengineering and Biomechanics

Purpose This study aimed to assess knee joint function in post-stroke patients using wireless motion sensors and functional tests. This type of evaluation may be important for improving gait quality. Methods The study included 25 post-stroke patients (age 53.5 ± 8.4 years) and 25 healthy controls (age 51.1 ± 7.7 years). Knee function was assessed using passive range of motion (PROM), active range of motion (AROM) at any speed, maximum speed AROM (FROM), and joint position sense (JPS). Orthyo® motion sensors and a mobile app were used for measurements. The following functional tests have been used: Five Times Sit-to-Stand Test (FTSST) and Timed Up and Go Test (TUG). Results Before rehabilitation, the average values of PROM (p=0.006), AROM (p=0.005), FROM average (p &lt; 0.001) and maximal velocity (p &lt; 0.001), JPS 30º (p = 0.002), JPS 60º (p = 0.002) and JPS 80º (p &lt; 0.001) were significantly worse in the paretic limb than in healthy people. The applied rehabilitation contributed to improving the PROM and AROM and the average and maximum speed of rapid movement in the knee joint. Proprioception (JPS) also improved. Only the average (p &lt; 0.001) and maximum speed (p &lt; 0.001) in the FROM test in the knee joint of the paretic limb after rehabilitation significantly differed from the values in healthy people. The patients' performance (functional tests) improved after rehabilitation (TUG (&lt; 0.001) and FTSST (&lt; 0.001)), but it did not reach the level of healthy people. Conclusions The function of the knee joint in the paretic limb is significantly impaired and requires inclusion in the therapy plan in the early period after stroke.

Agnieszka Wareńczak-Pawlicka

Ewa Lucka

Mateusz Lucki

Przemysław Lisiński

Importance of the assessment of knee joint function after a stroke

卒中后膝关节功能评估的重要性

Purpose From a current perspective, recent studies have shown the influence of changes in body weight on the distribution of plantar pressure and foot pain, emphasizing the importance of understanding these relationships. There is currently a lack of research integrating body composition, plantar pressure distribution and gender comparison to elucidate the complex interaction between these variables. Therefore, the main objective of this investigation is to evaluate body composition through BIA (bioimpedance) and the distribution of plantar pressure in the subjects' feet through pressure platform analysis with a specific focus on comparisons between the sexes and the associations between these variables. Methods The study employed an observational cross-sectional design. A total of 77 participants (n=77) aged between 18 and 91 years were assessed, the majority of whom were female (n=53, 68.83%), while 24 participants (n=24, 31.17%) were male. The average age of the participants was 60.717 years for males and 54.33 years for females. Baropodometry and bioimpedance tests were carried out. Results Significant differences with a medium effect were recorded only for the three indicators, while the rest of the values showed a large effect. Significant negative correlations were found between age and height (p &lt; 0.05) and positive correlations between age and other factors such as BMI, fat mass, lean mass, and various foot-related metrics. Conclusions The results of this study showed that plantar pressure characteristics differ according to gender and are related to body composition and pain level.

Svitlana Dikhtyarenko

Pedro Forte

Dulce Esteves

Correlation between body composition variables and plantar pressure and pain level

身体成分变量与足底压力及疼痛水平的相关性

Purpose The porcine eye serves as a valuable surrogate for studying human ocular anatomy and physiology because of its close resemblance. This study focuses on the influence of material properties, specifically Young’s modulus and Poisson’s ratio, on the crystalline lens overshooting amplitude during rapid eye rotation. Methods The Finite Element Method (FEM) is employed to explore various material property scenarios, and sensitivity analysis is conducted to assess their impact on the mechanical displacement of the crystalline lens apex. The measurements were made of three output parameters: maximum displacement, time of maximum displacement appearance , and stabilization time. Results The results highlight the significance of fine-tuning of the zonule’s material properties, particularly Young’s modulus, in achieving a reliable model. They suggest that fine-tuning of these parameters can lead to a highly reliable model, enabling in-depth research in the opto-dynamic simulations. Conclusions Having a complete examination of crystalline lens displacement in ex vivo porcine eye models and detailing crucial factors for accurate modeling will open the path for future studies especially in conditions affected by dynamic aspects of the crystalline lens or in in vivo research.

Milad Salimibani

Ali Dahaghin

Agnieszka Boszczyk

Jorge Grasa

Damian Siedlecki

Assessment of Material Properties in Key Components of the Porcine Crystalline Lens During Overshooting

猪晶状体关键组分在过度调节过程中材料特性的评估

Purpose The widespread use of heavy backpacks among adolescents raises concerns about the impact on musculoskeletal health. This study aims to investigate the effects of different backpack loads on shoulder strap tension during walking and running, using a spring-loaded shock-absorbing backpack. Methods Fifteen healthy male adolescents participated in the study. Each carried a backpack with loads of 3.5 kg, 7 kg, and 10.5 kg while walking at 2 m/s and running at 4 m/s. Shoulder strap tension was measured using custom-made tension sensors, and kinematic data were collected with a 3D motion capture system. Statistical Parametric Mapping (SPM) was applied to analyze tension variations across different gait phases. Results Shoulder strap tension increased significantly with heavier loads during both walking and running (p &lt; 0.001). The tension varied throughout the gait cycle, with distinct patterns observed between walking and running. During walking, tension peaked at mid-stance, while in running, tension decreased during the absorption phase and increased sharply during propulsion. Significant differences between 7 kg and 10.5 kg loads were noted at specific gait intervals (p &lt; 0.05). Conclusions Backpack load significantly influences shoulder strap tension, with variations closely linked to gait phases. These findings highlight the importance of ergonomic backpack design, particularly for reducing shoulder strain in adolescents.

None Yunqi Tang

None Jiachen Fan

None Meilian Lyu

None Tao Zhou

None Xie Wu

None Kezhun Cao

None Shutao Wei

Effect of Backpack Loads on Shoulder Strap Tension in Male Adolescents: A Biomechanical Study

男性青少年背包负重对肩带张力的影响：一项生物力学研究

Purpose In recent years, low back pain has emerged as a significant global health issue, largely attributed to the prevalence of lumbar disc degeneration (LDD). This increases high demand on implant manufacturing due to the uniqueness of each patient’s anthropometry. Which creates a surge in the implant design and its performance study. This work employed finite element analysis to evaluate the efficacy of Interbody cage fusion in combination with different biostructures and biomaterials. Methods The Lumbar Model was created by incorporating a surgical implant cage that featured three different lattice architectures using Boolean operations. We constructed four models, one model that was not altered and three models that underwent surgical procedures. The surgical models consist of three types of lattice implants are Double Diamond (DD), Double Diamond Centre Support (DDCS), Double Diamond Side Support (DDSS). Results The results indicate that the Double Diamond (DD) lattice-structured polyether ether ketone (PEEK) material implant experiences the most deformation, measuring 0.67 mm, when subjected to axial rotation motion. An analysis indicates the implant made with the DDCS lattice structure and Ti-6Al-4V material is subjected to the least stress – it stood at 75.47 MPa as the smallest stress level recorded. Conclusions The result of endplate von mises stress shows the PEEK material with DDCS lattice structured implant have low stress. Ti-6Al-4V and Stainless steel having high stress of 20 MPa on endplates. Comparatively Ti-6Al-4V having very good response with literature data. These results are providing insights towards the selection of implant in future medical treatment.

None Athikesavan D.

None Masilamany Santha Alphin

None Meganathan S.

Finite Element Analysis of Double Diamond Lattice Structured Lumbar Interbody Fusion Cage with Different Biomaterials

不同生物材料双菱形晶格结构腰椎椎间融合器的有限元分析

Abbreviation	Acta Bioeng Biomech
Journal Impact	0.98
Quartiles(Global)	ENGINEERING, BIOMEDICAL(Q4)

ISSN	1509-409X, 2450-6303
h-index	33

Publication Information	Publisher: Sciendo，Publishing cycle: Semiannual，Journal Type: journal，Open Access Journals: No
Basic data	Year of publication: 2005，Proportion of original research papers: 100.00%，Self Citation Rate:0.00%， Gold OA Rate: 74.68%
Average recruitment ratio	网友分享经验：容易

Acta of Bioengineering and Biomechanics

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Importance of the assessment of knee joint function after a stroke

Correlation between body composition variables and plantar pressure and pain level

Assessment of Material Properties in Key Components of the Porcine Crystalline Lens During Overshooting

Effect of Backpack Loads on Shoulder Strap Tension in Male Adolescents: A Biomechanical Study

Finite Element Analysis of Double Diamond Lattice Structured Lumbar Interbody Fusion Cage with Different Biomaterials

Importance of the assessment of knee joint function after a stroke

Correlation between body composition variables and plantar pressure and pain level

Assessment of Material Properties in Key Components of the Porcine Crystalline Lens During Overshooting

Effect of Backpack Loads on Shoulder Strap Tension in Male Adolescents: A Biomechanical Study

Finite Element Analysis of Double Diamond Lattice Structured Lumbar Interbody Fusion Cage with Different Biomaterials