Clinical Biomechanics最新文献_第2页

Soft tissue elasticity in total knee arthroplasty: An in vivo quantitative analysis 全膝关节置换术中的软组织弹性：活体定量分析

IF 1.4 3区医学

Clinical Biomechanics Pub Date : 2024-09-12 DOI: 10.1016/j.clinbiomech.2024.106335

{"title":"Soft tissue elasticity in total knee arthroplasty: An in vivo quantitative analysis","authors":"","doi":"10.1016/j.clinbiomech.2024.106335","DOIUrl":"10.1016/j.clinbiomech.2024.106335","url":null,"abstract":"<div><h3>Background</h3><p>Soft tissue balance is essential for total knee arthroplasty success. The elastic properties of soft tissues affect knee-joint stability and flexibility. This study proposed a novel methodology for in vivo quantitative analysis of soft tissue elasticity during total knee arthroplasty. In this study, we aimed to (1) establish a mathematical model to depict medial and lateral soft tissue elasticity, (2) report the individual differences and interindividual commonalities in soft tissue elasticity.</p></div><div><h3>Methods</h3><p>A specifically designed knee tensor was used to evaluate soft tissue elasticity by dynamically applying sequential tensions to medial and lateral compartments while measuring knee joint gaps in both compartments. Measurements were performed on ten knees of six cadavers. Bivariate polynomial regression was used for analysis, and the equivalent elastic coefficient (N/mm) was calculated.</p></div><div><h3>Findings</h3><p>Soft-tissue elasticity showed high individual differences. The equivalent elastic coefficient was larger in the medial compartment than in the lateral compartment, and the equivalent elastic coefficient of the lateral compartment gradually decreased while the medial equivalent elastic coefficient remained constant when the knee was flexed. The lateral gaps increased from 0.1 to 3.9 mm, and the medial gaps increased from 0 to 1.5 mm when the tension increased from 60 to 90 N. The shapes and distributions of the silkworm-like lattices in elasticity and balance evaluations are clinically relevant to knee balance.</p></div><div><h3>Interpretation</h3><p>Soft-tissue balance in total knee arthroplasty is significantly affected by soft-tissue elasticity. An intraoperative quantitative analysis of elasticity helps to tail an individualized balancing target for total knee arthroplasty.</p></div>","PeriodicalId":50992,"journal":{"name":"Clinical Biomechanics","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0268003324001670/pdfft?md5=eb84ba8dd784009d9018a9abd1b1f25e&pid=1-s2.0-S0268003324001670-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142239528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Does the timing of anterior cruciate ligament reconstruction surgery affect flexion contracture formation in rats? 前交叉韧带重建手术的时间会影响大鼠屈曲挛缩的形成吗？

IF 1.4 3区医学

Clinical Biomechanics Pub Date : 2024-09-11 DOI: 10.1016/j.clinbiomech.2024.106345

{"title":"Does the timing of anterior cruciate ligament reconstruction surgery affect flexion contracture formation in rats?","authors":"","doi":"10.1016/j.clinbiomech.2024.106345","DOIUrl":"10.1016/j.clinbiomech.2024.106345","url":null,"abstract":"<div><h3>Background</h3><p>Anterior cruciate ligament injuries are commonly treated with ligament reconstruction surgery, but post-operative joint contracture is a major complication. The optimal timing for anterior cruciate ligament reconstruction remains controversial, with some clinical studies suggesting that early surgery may increase the risk of joint contractures, while others have found no such association. To clarify this, we investigated the effects of the timing of reconstruction surgery on contracture formation using a rat model.</p></div><div><h3>Methods</h3><p>Anterior cruciate ligament-transected rats were divided into groups based on the timing of reconstruction: immediate, early, and delayed (1, 14, and 28 days after transection, respectively). Some anterior cruciate ligament-transected rats did not receive reconstruction surgery. Untreated rats served as controls. At 56 days after ligament transection, we assessed knee extension range of motion before (including both myogenic and arthrogenic factors) and after myotomy (arthrogenic factor only), as well as fibrotic changes in the joint capsule.</p></div><div><h3>Finding</h3><p>Anterior cruciate ligament transection alone significantly decreased range of motion before myotomy, but not after myotomy. In all reconstructed groups, both range of motions before and after myotomy were significantly reduced compared to the control, indicating the induction of arthrogenic contracture by reconstruction surgery. Fibrotic changes in the joint capsule were observed in all reconstructed groups, contributing to arthrogenic contracture formation. However, the timing of reconstruction had no effect on range of motions and fibrotic changes in the joint capsule.</p></div><div><h3>Interpretation</h3><p>Our findings may help guide clinical decision-making regarding the timing of anterior cruciate ligament reconstruction surgery.</p></div>","PeriodicalId":50992,"journal":{"name":"Clinical Biomechanics","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142168698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Kinematic patterns in performing trunk flexion tasks influenced by various mechanical optimization targets: A simulation study 执行躯干屈伸任务时受各种机械优化目标影响的运动模式：模拟研究

IF 1.4 3区医学

Clinical Biomechanics Pub Date : 2024-09-10 DOI: 10.1016/j.clinbiomech.2024.106344

{"title":"Kinematic patterns in performing trunk flexion tasks influenced by various mechanical optimization targets: A simulation study","authors":"","doi":"10.1016/j.clinbiomech.2024.106344","DOIUrl":"10.1016/j.clinbiomech.2024.106344","url":null,"abstract":"<div><h3>Background</h3><p>Low back pain is the most prevalent and disabling condition worldwide, with a high recurrence rate in the general adult population.</p></div><div><h3>Methods</h3><p>A set of open-sourced trunk musculoskeletal models was used to investigate trunk flexion kinematics under different motor control strategies, including minimizing shearing or compressive loads at the L4/L5 or L5/S1 level.</p></div><div><h3>Findings</h3><p>A control strategy that minimizes the load on the lower lumbar intervertebral disc can result in two kinematic patterns—the “restricted lumbar spine” and the “overflexed lumbar spine”—in performing the trunk flexion task. The “restricted” pattern can reduce the overall load on the lower lumbar levels, whereas the “overflexed” pattern can reduce the shearing force only at the L4/L5 level and increase the compressive and shearing forces at the L5/S1 level and the compressive force at the L4/L5 level.</p></div><div><h3>Interpretation</h3><p>This study investigated the relationships between specific trunk kinematics in patients with low back pain and lumbar intervertebral loading via musculoskeletal modelling and simulation. The results provide insight into individualized treatment for patients with low back pain.</p></div>","PeriodicalId":50992,"journal":{"name":"Clinical Biomechanics","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0268003324001761/pdfft?md5=1ff4bb117ff11b0e90e7f3b6a4df37b1&pid=1-s2.0-S0268003324001761-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142164373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The open Latarjet procedure does not affect scapulohumeral rhythm three months postoperatively 开放式 Latarjet 手术术后三个月不影响肩胛肱骨节律

IF 1.4 3区医学

Clinical Biomechanics Pub Date : 2024-09-07 DOI: 10.1016/j.clinbiomech.2024.106337

{"title":"The open Latarjet procedure does not affect scapulohumeral rhythm three months postoperatively","authors":"","doi":"10.1016/j.clinbiomech.2024.106337","DOIUrl":"10.1016/j.clinbiomech.2024.106337","url":null,"abstract":"<div><h3>Background</h3><p>Although it is considered a sensitive indicator of shoulder disabilities, the scapulohumeral rhythm has not been investigated after anterior glenohumeral stabilization with open Latarjet procedure. This study aimed to assess the short-term influence of glenohumeral stabilization on scapulohumeral rhythm in patients who underwent open Latarjet procedure compared to asymptomatic individuals.</p></div><div><h3>Methods</h3><p>A group of male patients who underwent anterior glenohumeral stabilization by open Latarjet procedure and a healthy group were enrolled in this study. An electromagnetic device was used to record scapulothoracic and glenohumeral joint kinematics during dynamic arm elevation and depression in the scapular plane before and three months after surgery. Then, the three-dimensional dynamic scapulohumeral rhythm was computed bilaterally. SPM ANOVAs were used for statistical analysis.</p></div><div><h3>Findings</h3><p>Twenty-two participants per group were included. The scapulohumeral rhythm of the two groups increased from 1.88 [mean] ± 0.79 [standard deviation] to 2.83 ± 1.52 during the ascending phase, while a decrease followed by a slight increase in the scapulohumeral rhythm were observed during the descending phase. The scapulohumeral rhythm did not significantly differ between the operated and non-operated sides or before and after surgery. When pooling the sides for each group, no significant differences were observed between the groups.</p></div><div><h3>Interpretation</h3><p>The scapulohumeral rhythm in patients who underwent the Latarjet procedure is not modified three months after surgery and is similar to the scapulohumeral rhythm of asymptomatic individuals. These findings suggest that in addition to restoring glenohumeral stability, the open Latarjet procedure preserves shoulder joint coordination three months postoperatively.</p></div>","PeriodicalId":50992,"journal":{"name":"Clinical Biomechanics","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142173327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Biomechanical validation of a tibial critical-size defect model in minipigs 迷你猪胫骨临界尺寸缺损模型的生物力学验证

IF 1.4 3区医学

Clinical Biomechanics Pub Date : 2024-09-07 DOI: 10.1016/j.clinbiomech.2024.106336

{"title":"Biomechanical validation of a tibial critical-size defect model in minipigs","authors":"","doi":"10.1016/j.clinbiomech.2024.106336","DOIUrl":"10.1016/j.clinbiomech.2024.106336","url":null,"abstract":"<div><h3>Background</h3><p>Autologous cancellous bone grafting still represents the gold standard for the therapy of non-healing bone defects. However, donor site morbidity and the restricted availability of autologous bone grafts have initiated scientists to look for promising alternatives to heal even large defects. The present study aimed to evaluate the biomechanical potential and failure properties of a previously developed metaphyseal critical-size defect model of the proximal tibia in minipigs for future comparisons of bone substitute materials.</p></div><div><h3>Methods</h3><p>Fresh-frozen minipig tibiae were divided into two groups, with half undergoing the creation of critical-size defects. Specimens were subjected to biomechanical fatigue tests and load-to-failure tests. CT scans post-test verified bone damage. Statistical analysis compared the properties of defected and intact specimens.</p></div><div><h3>Findings</h3><p>In this model, it was demonstrated that under uniaxial cyclic compression within the loading axis, the intact tibiae specimens (8708 ± 202 N) provided a significant (<em>p</em> = 0.014) higher compressive force to failure than the tibiae with the defect (6566 ± 1653 N).</p></div><div><h3>Interpretation</h3><p>Thus, the used minipig model is suitable for comparing bone substitute materials regarding their biomechanical forces and bone regeneration capacity.</p></div>","PeriodicalId":50992,"journal":{"name":"Clinical Biomechanics","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0268003324001682/pdfft?md5=98f165d615afa8e7a6dc451591d76c72&pid=1-s2.0-S0268003324001682-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142229881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design of the Elastic Modulus of porous lattice structures composed of cells with continuously variable cross section carrying structures 由横截面连续可变的单元组成的多孔网格结构的弹性模量设计

IF 1.4 3区医学

Clinical Biomechanics Pub Date : 2024-08-23 DOI: 10.1016/j.clinbiomech.2024.106330

{"title":"Design of the Elastic Modulus of porous lattice structures composed of cells with continuously variable cross section carrying structures","authors":"","doi":"10.1016/j.clinbiomech.2024.106330","DOIUrl":"10.1016/j.clinbiomech.2024.106330","url":null,"abstract":"<div><h3>Background</h3><p>Porous bone implants have a wide range of applications for their low elastic modulus and good connectivity. It is necessary to explore an elastic modulus control method that can significantly regulate the elastic modulus under the condition of maintaining a constant porosity.</p></div><div><h3>Methods</h3><p>For achieving continuously changing elastic modulus of porous lattice structure, the simple cubic lattice structures were selected as research object, and the distribution of cross-sectional sizes of its carrying structures were set as variable continuous curves. The prediction model for the elastic modulus was established based on the elasticity mechanics and the equal mass assumption. Then, the prediction model is enhanced through compression simulation of the unit cell structure. Finally, the accuracy of prediction model is validated by compression experiments.</p></div><div><h3>Findings</h3><p>The results indicate that the distribution of cross-sectional size of the carrying structures has a significant impact on the elastic modulus of unit cell structures under the constraint of equal mass. By adjusting the characteristic parameters of distribution curves, the elastic modulus can be changed within a large range.</p></div><div><h3>Interpretation</h3><p>Variable cross-section can effectively change the elastic modulus of porous structures while ensuring constant porosity. This method has important value in decoupling the influence of geometric parameters on the elastic modulus of porous structures.</p></div>","PeriodicalId":50992,"journal":{"name":"Clinical Biomechanics","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142076009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Changes in rotator movement during early gait acquisition in after total hip arthroplasty 全髋关节置换术后早期步态获得过程中转子运动的变化

IF 1.4 3区医学

Clinical Biomechanics Pub Date : 2024-08-22 DOI: 10.1016/j.clinbiomech.2024.106333

{"title":"Changes in rotator movement during early gait acquisition in after total hip arthroplasty","authors":"","doi":"10.1016/j.clinbiomech.2024.106333","DOIUrl":"10.1016/j.clinbiomech.2024.106333","url":null,"abstract":"<div><h3>Background</h3><p>In walking in healthy adults, rotation of the hip joint affects stride length and shifts the center of gravity, but these are not seen in hip osteoarthritis which affects gait. In gait of total hip arthroplasty, there are few reports on changes in the horizontal plane. This study clarified the preoperative and early postoperative gait characteristics of patients undergoing total hip arthroplasty.</p></div><div><h3>Methods</h3><p>The analysis included 12 females who underwent initial total hip arthroplasty using a posterolateral approach. Gait was measured pre and postoperatively using a three-dimensional motion analysis device. Statistics were compared pre and postoperative range of motion, muscle strength, walking speed, stride length, gravity movement distance, trunk angle, hip joint angle, and joint moment.</p></div><div><h3>Findings</h3><p>The maximum hip abduction moment and trunk flexion angle to the surgical side were lower than in healthy subjects. The angle of internal rotation during the stance phase was significantly higher in the postoperative period. The distance of the center of gravity shift in the left and right directions was significantly decreased postoperatively.</p></div><div><h3>Interpretation</h3><p>Gait disturbance was seen preoperatively and remained after surgery. Walking after total hip arthroplasty provides the hip joint rotates inward which is closer to normal walking. However, no change was observed in the external rotation moment of the hip joint during walking. We suspect that the invasiveness of the posterolateral approach of total hip arthroplasty affects the muscles for external rotation of the hip joint. This can also cause in gait disturbances.</p></div>","PeriodicalId":50992,"journal":{"name":"Clinical Biomechanics","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142076010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Real-world gait and turning in individuals scheduled for total knee arthroplasty 计划接受全膝关节置换术者的实际步态和翻身情况。

IF 1.4 3区医学

Clinical Biomechanics Pub Date : 2024-08-22 DOI: 10.1016/j.clinbiomech.2024.106332

{"title":"Real-world gait and turning in individuals scheduled for total knee arthroplasty","authors":"","doi":"10.1016/j.clinbiomech.2024.106332","DOIUrl":"10.1016/j.clinbiomech.2024.106332","url":null,"abstract":"<div><h3>Background</h3><p>Improving mobility – specifically walking – is an important treatment goal of total knee arthroplasty. Objective indicators for mobility, however, are lacking in clinical evaluations. This study aimed to compare real-world gait and turning between individuals scheduled for total knee arthroplasty and healthy controls, using continuous monitoring with inertial measurement units.</p></div><div><h3>Methods</h3><p>Real-world gait and turning data were collected for 5–7 days in individuals scheduled for total knee arthroplasty (<em>n</em> = 34) and healthy controls (<em>n</em> = 32) using inertial measurement units on the feet and lower back. Gait and turning parameters were compared between groups using a linear regression model. Data was further analyzed by stratification of gait bouts based on bout length, and turns based on turning angle and turning direction.</p></div><div><h3>Findings</h3><p>Dominant real-world gait speed was 0.21 m/s lower in individuals scheduled for total knee arthroplasty compared to healthy controls. Stride time was 0.05 s higher in individuals scheduled for total knee arthroplasty. Step time asymmetry was not different between the groups. Regarding walking activity, individuals scheduled for total knee arthroplasty walked 72 strides/h less than healthy controls, and maximum bout length was 316 strides shorter. Irrespective of the size of the turn, turning velocity was lower in individuals scheduled for total knee arthroplasty.</p></div><div><h3>Interpretation</h3><p>Individuals scheduled for total knee arthroplasty showed specific walking and turning limitations in the real-world. Parameters derived from inertial measurement units reflected a rich profile of real-world mobility measures indicative of walking limitation of individuals scheduled for total knee arthroplasty, which may provide a relevant outcome dimension for future studies.</p></div>","PeriodicalId":50992,"journal":{"name":"Clinical Biomechanics","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0268003324001645/pdfft?md5=a219f2633b047e4098e51b0f7e3cd8d2&pid=1-s2.0-S0268003324001645-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142146747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessment of the pelvic and body interface pressure during different recumbent and semi-recumbent birthing positions 评估不同仰卧和半仰卧分娩姿势下的骨盆和身体界面压力

IF 1.4 3区医学

Clinical Biomechanics Pub Date : 2024-08-19 DOI: 10.1016/j.clinbiomech.2024.106328

{"title":"Assessment of the pelvic and body interface pressure during different recumbent and semi-recumbent birthing positions","authors":"","doi":"10.1016/j.clinbiomech.2024.106328","DOIUrl":"10.1016/j.clinbiomech.2024.106328","url":null,"abstract":"<div><h3>Background</h3><p>Childbirth, a multifaceted physiological event, undergoes dynamic changes influenced significantly by the chosen birthing position, impacting comfort and maternal and neonatal outcomes among other factors. This study aimed to investigate the bed-body interface pressure across five commonly adopted birthing positions, particularly focusing on their influence on pelvic expansion biomechanics during labour.</p></div><div><h3>Methods</h3><p>Twenty healthy participants, aged between 18 and 49 years, were evaluated. Interface pressure across multiple regions of interest, including the head, shoulder, pelvis, and full body, were meticulously assessed under different combinations of leg and back positioning.</p></div><div><h3>Findings</h3><p>Significant variations in interface pressure were observed based on chosen positions. Post hoc pairwise comparisons showed different pressure distributions for all regions of interest, with the combination of legs in stirrups and a flat back resulting in the lowest average pressure in the pelvic region. During the closed glottis pushing task, this combination exhibited lower peak pressure and peak pressure index in the pelvic region compared to other positions.</p></div><div><h3>Interpretation</h3><p>While upright positions are conventionally preferred, the study underscores the nuanced implications of recumbent and semi-recumbent positions. Although using stirrups with a flat back exerts less pressure, lying flat can impede blood flow and exacerbate pain, while stirrups might lead to discomfort and potential complications. Given these complexities, healthcare providers must consider multiple factors to determine optimal birthing positions. The interplay between birthing positions and obstetric outcomes awaits further exploration and refinement, marking an exciting frontier in maternal care.</p></div>","PeriodicalId":50992,"journal":{"name":"Clinical Biomechanics","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0268003324001608/pdfft?md5=1b60cde6c2f8ce8ef2afc96cc0d17aa8&pid=1-s2.0-S0268003324001608-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142076011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Knee muscle strength and steadiness for individuals with anterior cruciate ligament reconstruction and knee osteoarthritis 前交叉韧带重建和膝关节骨性关节炎患者的膝关节肌肉力量和稳定性。

IF 1.4 3区医学

Clinical Biomechanics Pub Date : 2024-08-18 DOI: 10.1016/j.clinbiomech.2024.106331

{"title":"Knee muscle strength and steadiness for individuals with anterior cruciate ligament reconstruction and knee osteoarthritis","authors":"","doi":"10.1016/j.clinbiomech.2024.106331","DOIUrl":"10.1016/j.clinbiomech.2024.106331","url":null,"abstract":"<div><h3>Background</h3><p>Strength and neuromuscular decrements following knee musculoskeletal injury may accelerate knee osteoarthritis development. This study assessed isometric knee extensor and flexor strength and steadiness between individuals with knee injury, i.e., ligament reconstruction, and knee osteoarthritis to healthy age-matched controls.</p></div><div><h3>Methods</h3><p>Four cohorts (1: knee injury and 2: age-matched controls, and 3: radiographic knee osteoarthritis and 4: age-matched controls) were recruited. Participants performed maximal voluntary isometric knee extensor and flexor contractions. Then, strength (e.g., peak and rate of torque development) and steadiness (e.g., peak power, mean, and median frequency) were derived from each raw torque-time curve and associated power spectral density. A Kruskal-Wallis H test and Spearman's rho correlation analysis assessed cohort differences and association between knee extensor and flexor strength and steadiness.</p></div><div><h3>Findings</h3><p>The young adult control and knee injury cohorts exhibited greater knee extensor and flexor strength than the older, knee osteoarthritis cohort (<em>p</em> < 0.043). The knee injury cohort, despite being as strong as their healthy counterparts, were significantly less steady with a 92% increase in peak power frequency (<em>p</em> = 0.046). The osteoarthritis cohort exhibited 157% less total power compared to the knee injury and young control cohorts (<em>p</em> < 0.019). Knee extensor and flexor peak torque, rate of torque development, and mean torque exhibit a significant, positive relation with total power (<em>p</em> < 0.018).</p></div><div><h3>Interpretation</h3><p>Individuals with knee injury and disease may exhibit weaker or less steady knee musculature, predisposing them to degenerative joint disease. Clinicians may need to restore knee extensor and flexor steadiness to facilitate better joint neuromuscular control.</p></div>","PeriodicalId":50992,"journal":{"name":"Clinical Biomechanics","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142037693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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