Clinical Biomechanics最新文献

{"title":"Examination of knee extensor and valgus moment arms of the patellar tendon in older individuals with and without knee osteoarthritis","authors":"Masashi Taniguchi ,&nbsp;Akihiro Asayama ,&nbsp;Masahide Yagi ,&nbsp;Yoshihiro Fukumoto ,&nbsp;Tetsuya Hirono ,&nbsp;Momoko Yamagata ,&nbsp;Ryusuke Nakai ,&nbsp;Masashi Kobayashi ,&nbsp;Noriaki Ichihashi","doi":"10.1016/j.clinbiomech.2024.106212","DOIUrl":"10.1016/j.clinbiomech.2024.106212","url":null,"abstract":"<div><h3>Background</h3><p>Joint moment arm is a major element that determines joint torque. This study aimed to investigate factors associated with knee extensor and valgus moment arms of the patellar tendon in older individuals with and without knee osteoarthritis.</p></div><div><h3>Methods</h3><p>Thirty-six participants with knee osteoarthritis (mean age, 78.1 ± 6.0 years) and 43 healthy controls (mean age, 73.0 ± 6.3 years) were analyzed. Magnetic resonance images (MRI) from the knee joint and thigh were acquired using a 3.0 T MRI scanner. The three-dimensional moment arm was defined as the distance between the contact point of the tibiofemoral joint and the patellar tendon line. The three-dimensional moment arm was decomposed into sagittal and coronal components, which were calculated as knee extensor and valgus moment arms, respectively. Quadriceps muscle volume, epicondylar width, bisect offset, Insall–Salvati ratio, and Kellgren–Lawrence grade were assessed. Multiple regression analyses were performed in the healthy control and knee osteoarthritis groups, with knee extensor and valgus moment arms as dependent variables.</p></div><div><h3>Findings</h3><p>Knee extensor moment arm was significantly associated with epicondylar width and the Insall–Salvati ratio in the healthy control group and with Kellgren–Lawrence grade, epicondylar width, and quadriceps muscle volume in the knee osteoarthritis group. Valgus knee moment arm was significantly associated with bisect offset in both the groups.</p></div><div><h3>Interpretation</h3><p>Knee size, osteoarthritis severity, and quadriceps muscle volume affect the knee extensor moment arm in knee osteoarthritis, whereas lateral patellar displacement affects the valgus knee moment arms in older individuals with and without knee osteoarthritis.</p></div>","PeriodicalId":50992,"journal":{"name":"Clinical Biomechanics","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139919273","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}

{"title":"Assessment of gait mechanics and muscle strength in hypermobile Ehlers Danlos Syndrome","authors":"Lindsey N. Ball ,&nbsp;Mariana V. Jacobs ,&nbsp;Christopher J. McLouth ,&nbsp;Jody Clasey ,&nbsp;Clair Francomano ,&nbsp;Mary B. Sheppard ,&nbsp;Michael A. Samaan","doi":"10.1016/j.clinbiomech.2024.106210","DOIUrl":"10.1016/j.clinbiomech.2024.106210","url":null,"abstract":"<div><h3>Background</h3><p>Hypermobile Ehlers Danlos Syndrome, a heritable connective tissue disorder, is associated with muscle dysfunction, joint subluxations and pain. The impact of hypermobile Ehlers Danlos Syndrome on musculoskeletal mechanics is understudied. Therefore, the aim of this study was to assess the effects of hypermobile Ehlers Danlos Syndrome on lower extremity gait mechanics and muscle strength.</p></div><div><h3>Methods</h3><p>Eleven people with hypermobile Ehlers Danlos Syndrome and 11 asymptomatic controls underwent a 3D gait analysis and isometric hip and knee muscle strength assessment. Joint subluxations were self-reported by the hypermobile Ehlers Danlos syndrome group. Independent <em>t</em>-tests and Mann Whitney <em>U</em> tests were used to analyze joint mechanics, muscle strength, and patient report outcomes (<em>p</em> &lt; 0.05).</p></div><div><h3>Findings</h3><p>Both groups exhibited similar walking speeds as well as similar hip, knee, and ankle joint kinematics. The hypermobile Ehlers Danlos Syndrome group walked with a lower peak hip extensor moment (hypermobile Ehlers Danlos Syndrome: -0.52 ± 0.28 Nmˑkg⁻¹, Control: -0.83 ± 0.26 Nmˑkg⁻¹, <em>p</em> = 0.01) yet similar knee and ankle joint moments. The hypermobile Ehlers Danlos Syndrome group exhibited a 40% deficit in peak hip extensor strength (hypermobile Ehlers Danlos Syndrome:1.07 ± 0.53 Nmˑkg⁻¹, Control: 1.77 ± 0.79 Nmˑkg⁻¹, <em>p</em> = 0.04). Approximately 73%, 55% and 45% of the hypermobile Ehlers Danlos Syndrome cohort self-reported hip, knee/patella and ankle joint subluxations, respectively, at least once a week.</p></div><div><h3>Interpretation</h3><p>Patients with hypermobile Ehlers Danlos Syndrome ambulated with altered hip extensor moments and exhibit hip extensor weakness. Future work should investigate the underlying mechanisms of hip extensor weakness and corresponding effects on joint health in people with hypermobile Ehlers Danlos Syndrome.</p></div>","PeriodicalId":50992,"journal":{"name":"Clinical Biomechanics","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139984452","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}

{"title":"Mechanics of dynamic compression plate application in fracture fixation","authors":"Hwabok Wee ,&nbsp;Jacob Staub ,&nbsp;Zachary Koroneos ,&nbsp;Allen Kunselman ,&nbsp;J. Spence Reid ,&nbsp;Gregory S. Lewis","doi":"10.1016/j.clinbiomech.2024.106209","DOIUrl":"10.1016/j.clinbiomech.2024.106209","url":null,"abstract":"<div><h3>Background</h3><p>Dynamic compression plating is a fundamental type of bone fracture fixation used to generate interfragmentary compression. The goal of this study was to investigate the mechanics of the surgical application of these plates, specifically how plate prebend, screw location, fracture gap, and applied torque influence the resulting compressive pressures.</p></div><div><h3>Methods</h3><p>Synthetic bones with transverse fractures were fixed with locking compression plates. One side of the fracture was fixed with locking screws. On the other side of the fracture, a nonlocking screw was inserted eccentrically to induce interfragmentary compression. A pressure mapping sensor within the fracture gap was used to record the resulting pressure distribution. Plate prebends of 0 mm, 1.5 mm, and 3 mm were tested. Three locations of the eccentric screw, four levels of screw torque, and two initial fracture gap conditions also were tested.</p></div><div><h3>Findings</h3><p>With increasing plate prebend, fracture compression pressures shifted significantly toward the far cortex; however, compression force decreased (<em>P</em> &lt; 0.05). The 1.5 mm prebend plate resulted in the greatest contact area. Increasing screw torque generally resulted in greater fracture compression force. The introduction of a 1 mm fracture gap at the far cortex prior to dynamic compression resulted in little or no fracture compression.</p></div><div><h3>Interpretation</h3><p>The model showed that increasing plate prebend results in an increasing shift of fracture compression pressures toward the far cortex; however, this is accompanied by decreases in compressive force. Initial fracture gaps at the far cortex can result in little or no compression.</p></div>","PeriodicalId":50992,"journal":{"name":"Clinical Biomechanics","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139919006","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}

{"title":"The impact of whole-body vibration training and proprioceptive neuromuscular facilitation on biomechanical characteristics of lower extremity during cutting movement in individuals with functional ankle instability: A parallel-group study","authors":"Huimeng Chen ,&nbsp;Wenxia Hu ,&nbsp;Yuduo Liu ,&nbsp;Jia Na ,&nbsp;Qiujie Li ,&nbsp;Xianglin Wan","doi":"10.1016/j.clinbiomech.2024.106208","DOIUrl":"10.1016/j.clinbiomech.2024.106208","url":null,"abstract":"<div><h3>Background</h3><p>We compared the effects of whole-body vibration training and proprioceptive neuromuscular facilitation on the biomechanical characteristics of the lower limbs in functional ankle instability patients during cutting movement to ascertain the superior rehabilitation method.</p></div><div><h3>Methods</h3><p>Twenty-two male College students with unilateral functional ankle instability volunteered for this study and were randomly divided into whole-body vibration training group and proprioceptive neuromuscular facilitation group. Kinematics data and ground reaction forces were collected using infrared motion capture system and 3-D force plates synchronously during cutting. Repeated measures two-way ANOVA was performed to analyze the data.</p></div><div><h3>Findings</h3><p>Both training methods reduced the maximum hip abduction angle (<em>p</em> = 0.010, effect size: proprioceptive neuromuscular facilitation = 0.69; whole-body vibration training = 0.20), maximum knee flexion angle (<em>p</em> = 0.008, effect size: proprioceptive neuromuscular facilitation = 0.39, whole-body vibration training = 1.26) and angular velocity (<em>p</em> = 0.014, effect size: proprioceptive neuromuscular facilitation = 0.62, whole-body vibration training = 0.55), maximum ankle inversion angular velocity (<em>p</em> = 0.020, effect size: proprioceptive neuromuscular facilitation = 0.52, whole-body vibration training = 0.81), and knee flexion angle at the time of maximum vertical ground reaction forces (<em>p</em> = 0.018, effect size: proprioceptive neuromuscular facilitation = 0.27, whole-body vibration training = 0.76), and increased the maximum ankle dorsiflexion moment (<em>p</em> = 0.049, effect size: proprioceptive neuromuscular facilitation = −0.52, whole-body vibration training = −0.22). Whole-body vibration training reduced the maximum ground reaction forces value in the mediolateral directions (<em>p</em> = 0.010, effect size = 0.82) during cutting movement.</p></div><div><h3>Interpretation</h3><p>These findings suggested that the two types of training might increase neuromuscular conduction function around the ankle. After these two types of training, functional ankle instability patients showed a similar risk of injury to the lateral ankle ligaments during cutting.</p></div>","PeriodicalId":50992,"journal":{"name":"Clinical Biomechanics","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139831750","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}

{"title":"Kinematic analysis in post-stroke patients with moderate to severe upper limb paresis and non-disabled controls","authors":"Xinyun Huang ,&nbsp;Ouping Liao ,&nbsp;Shuyun Jiang ,&nbsp;Jing Li ,&nbsp;Xiaopeng Ma","doi":"10.1016/j.clinbiomech.2024.106206","DOIUrl":"10.1016/j.clinbiomech.2024.106206","url":null,"abstract":"<div><h3>Background</h3><p>Kinematic analysis has been recommended to quantify the upper limb motor function after stroke. However, previous studies have rarely reported the kinematic data of the post-stroke patients with moderate to severe upper limb paresis due to the poor accomplishment of the complex tasks.</p></div><div><h3>Methods</h3><p>27 post-stroke individuals and 20 non-disabled people participated in the study. The trunk and upper limb movements during the Hand-to-mouth task were captured by the motion capture system and upper extremity kinematic analysis software automatically. The subgroup analysis within stroke group were conducted layering by the Fugl-Meyer Assessment for Upper Extremity scores (severe: 16–31; moderate: 32–50).</p></div><div><h3>Findings</h3><p>The paretic upper limbs in the stroke group tended to use more trunk and shoulder compensatory strategies to offset the impact of spasticity and weakness compared with non-disabled controls. The less-affected limbs in the stroke group also showed abnormal kinematic data. There were significant differences between the kinematic metrics of severe and moderate subgroups.</p></div><div><h3>Interpretation</h3><p>The Hand-to-mouth task is a good and feasible option for kinematic analysis of these patients. It is essential to layer the severity of the paresis and put more emphasis on trunk movements in the future kinematic studies.</p></div>","PeriodicalId":50992,"journal":{"name":"Clinical Biomechanics","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S026800332400038X/pdfft?md5=78d77f1e09cb644c4a9f444723903c6a&pid=1-s2.0-S026800332400038X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139829337","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}

{"title":"Age-related modifications of muscle synergies during daily-living tasks: A scoping review","authors":"Cloé Dussault-Picard ,&nbsp;Sara Havashinezhadian ,&nbsp;Nicolas A. Turpin ,&nbsp;Florent Moissenet ,&nbsp;Katia Turcot ,&nbsp;Yosra Cherni","doi":"10.1016/j.clinbiomech.2024.106207","DOIUrl":"https://doi.org/10.1016/j.clinbiomech.2024.106207","url":null,"abstract":"<div><h3>Background</h3><p>Aging is associated with changes in neuromuscular control that can lead to difficulties in performing daily living tasks. Muscle synergy analysis allows the assessment of neuromuscular control strategies and functional deficits. However, the age-related changes of muscle synergies during functional tasks are scattered throughout the literature. This review aimed to synthesize the existing literature on muscle synergies in elderly people during daily-living tasks and examine how they differ from those exhibited by young adults.</p></div><div><h3>Methods</h3><p>The Medline, CINAHL and Web of Science databases were searched. Studies were included if they focused on muscle synergies in elderly people during walking, sit-to-stand or stair ascent, and if muscle synergies were obtained by a matrix factorization algorithm.</p></div><div><h3>Findings</h3><p>Seventeen studies were included after the screening process. The muscle synergies of 295 elderly people and 182 young adults were reported, including 5 to 16 muscles per leg, or leg and trunk. Results suggest that: 1) elderly people and young adults retain similar muscle synergies' number, 2) elderly people have higher muscles weighting during walking, and 3) an increased inter and intra-subject temporal activation variability during specific tasks (i.e., walking and stair ascent, respectively) was reported in elderly people compared to young adults.</p></div><div><h3>Interpretation</h3><p>This review gives a comprehensive understanding of age-related changes in neuromuscular control during daily living tasks. Our findings suggested that although the number of synergies remains similar, metrics such as spatial and temporal structures of synergies are more suitable to identify neuromuscular control deficits between young adults and elderly people.</p></div>","PeriodicalId":50992,"journal":{"name":"Clinical Biomechanics","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0268003324000391/pdfft?md5=93be014a8a029a9708aacb9e7af47f7a&pid=1-s2.0-S0268003324000391-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139749056","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}

{"title":"Turning speed as a more responsive metric of age-related decline in mobility: A comparative study with gait speed","authors":"Angela R. Weston ,&nbsp;Keith R. Lohse ,&nbsp;Andrew Kittelson ,&nbsp;Laurie A. King ,&nbsp;Patty Carlson-Kuhta ,&nbsp;Leland E. Dibble ,&nbsp;Martina Mancini","doi":"10.1016/j.clinbiomech.2024.106196","DOIUrl":"https://doi.org/10.1016/j.clinbiomech.2024.106196","url":null,"abstract":"<div><h3>Background</h3><p>Navigating your environment requires both straight-line gait as well as turning. Gait speed normative values are well established and utilized in determining a person's functional status, however, it has limitations. This study sought to examine whether turning speed declines with age and how it compared to gait speed age-related decline.</p></div><div><h3>Methods</h3><p>A secondary analysis was performed on 275 community dwelling adults between the ages of 18–88 that performed a timed walking test with an inertial measurement unit on their lumbar spine. Turning speed and walking speed were extracted for each participant. A series of mixed models were compared, and Akaike's Information Criterion was used to determine the best fit model between age and turning speed and age and gait speed.</p></div><div><h3>Findings</h3><p>Turning speed and gait speed normative values were reported for each age decade. A linear model with a random intercept of “Condition” was used to assess the relationship between age and turning speed. The results indicated a significant negative relationship between age and turning speed (B = -0.66, <em>p</em> &lt; 0.001). A spline-fit model determined a significant negative relationship between age and gait speed after the age of 65 (B = -0.0097, <em>p</em> = 0.002). The effect of age on gait speed before age 65 was not significant.</p></div><div><h3>Interpretation</h3><p>Turning speed significantly declines with age in a linear fashion while gait speed begins to decline after age 65. Turning speed may be more responsive to age than gait speed. More research is needed to determine if the decline in turning speed with age is associated with a decline in function.</p></div>","PeriodicalId":50992,"journal":{"name":"Clinical Biomechanics","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139726348","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}

{"title":"Effects of surface profile on porcine dural mechanical properties","authors":"Atsutaka Tamura ,&nbsp;Chikano Sakaue","doi":"10.1016/j.clinbiomech.2024.106189","DOIUrl":"10.1016/j.clinbiomech.2024.106189","url":null,"abstract":"<div><h3>Background</h3><p><span>Cerebrospinal fluid leakage through the </span>spinal meninges<span><span> is difficult to diagnose and treat. Moreover, its underlying mechanism remains unknown. Considering that the dura mater is structurally the strongest and outermost membrane among the three-layered </span>meninges, we hypothesized that a dural mechanical tear would trigger spontaneous cerebrospinal fluid leakage, especially when a traumatic loading event is involved. Thus, accurate biomechanical properties of the dura mater are indispensable for improving computational models, which aid in predicting blunt impact injuries and creating artificial substitutes for transplantation and surgical training.</span></p></div><div><h3>Method</h3><p>We characterized the surface profile of the spinal dura and its mechanical properties (Young's moduli) with a distinction of its inherent anatomical sites (<em>i.e.</em><span>, the cervical and lumbar regions as well as the dorsal and ventral sides of the spinal cord).</span></p></div><div><h3>Findings</h3><p>Although the obtained Young's moduli exhibited no considerable difference between the aforementioned anatomical sites, our results suggested that the wrinkles structurally formed along the longitudinal direction would relieve stress concentration on the dural surface under <em>in vivo</em> and supraphysiological conditions, enabling mechanical protection of the dural tissue from a blunt impact force that was externally applied to the spine.</p></div><div><h3>Interpretation</h3><p>This study provides fundamental data that can be used for accurately predicting cerebrospinal fluid leakage due to blunt impact trauma.</p></div>","PeriodicalId":50992,"journal":{"name":"Clinical Biomechanics","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139587333","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}

{"title":"Validating the measurement of passive Musculo-articular wrist stiffness without intentional or reactive contraction using axillary plexus block","authors":"Thibaut Libert ,&nbsp;Christine Detrembleur ,&nbsp;Francois Melebeck ,&nbsp;Anh Phong Nguyen","doi":"10.1016/j.clinbiomech.2024.106190","DOIUrl":"10.1016/j.clinbiomech.2024.106190","url":null,"abstract":"<div><h3>Background</h3><p>Passive stiffness describes how easily a joint may move passively. To accurately measure wrist stiffness, an electro-oscillation device was developed. The objectives were to 1) ensuring that the measurement are free from intentional or reflex contraction, 2) analyzing how forearm anatomy affects the passive stiffness of the wrist and 3) determining the clinical practical relevance of the device.</p></div><div><h3>Methods</h3><p>In this prospective study, the device generated low amplitude sinusoidal motions in flexion and extension on the wrist to quantify elastic and viscous passive stiffness in voluntary orthopaedic patients. The first series of measurements was carried out in the state of voluntary relaxation, the second series of measurements was carried out after an axillary plexus anesthetic block. A matched group of healthy subjects were use for control.</p></div><div><h3>Findings</h3><p>The Electromechanical Oscillation methods effectively enable the measurement of passive joint stiffness since the stiffness values obtained show no statistically significant difference pre-post the anesthesia. The stiffness values are comparable to those of healthy subjects. The effect of forearm passive structure, estimated by the perimeter of the forearm, influences the passive stiffness of the wrist, mainly the viscous component.</p></div><div><h3>Interpretation</h3><p>The use of sinusoidal oscillation was well accepted by the participants, demonstrating its usefulness and applicability in a clinical setting. This work serves as a foundation for future investigations of orthopaedic and/or neurological pathological conditions characterized by abnormal passive joint stiffness of the wrist. It paves the way for its use as a diagnostic, prognostic, and monitoring tool in these pathologies.</p></div>","PeriodicalId":50992,"journal":{"name":"Clinical Biomechanics","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139668745","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}

{"title":"Dynamic joint stiffness in individuals with femoroacetabular impingement syndrome pre- and post-hip arthroscopy","authors":"Madeline Grosklos ,&nbsp;Jennifer Perry ,&nbsp;Megan Elwood ,&nbsp;Kate Jochimsen ,&nbsp;Stephanie Di Stasi","doi":"10.1016/j.clinbiomech.2024.106187","DOIUrl":"10.1016/j.clinbiomech.2024.106187","url":null,"abstract":"<div><h3>Background</h3><p>Patients with hip-related pain often fail to return to their desired level of activity following hip arthroscopy. Lasting biomechanics alterations may be one potential explanation. Dynamic joint stiffness assesses the mechanistic controls of the lower limb during high impact movements, and thus, may provide valuable clinical targets to improving movement and optimizing return to activity after surgery.</p></div><div><h3>Methods</h3><p>Twenty-five participants (13 females) with hip-related pain underwent 3D motion capture during a drop jump task before surgery and six months post-operatively. Nineteen healthy controls (9 females) were collected for comparison. Sagittal plane dynamic joint stiffness was calculated during the initial landing phase. Baseline and 6-month dynamic joint stiffness data were compared 1) between males and females with hip-related pain and 2) between individuals with hip-related pain and controls using Wilcoxon Signed-Rank and Mann Whitney <em>U</em> tests. Sexes were analyzed separately.</p></div><div><h3>Findings</h3><p>From baseline to 6 months post-operatively, females with hip-related pain demonstrated decreased dynamic ankle stiffness (2.26 Nm/deg. [0.61] to 1.84 Nm/deg. [0.43]) (<em>p</em> = .005) and males with hip-related pain demonstrated increased dynamic hip stiffness (2.73 [0.90] to 3.88 [1.73]) (<em>p</em> = .013). There were no differences in dynamic stiffness at any joint between individuals with hip-related pain at either timepoint when compared to controls (<em>p</em> ≥ .099).</p></div><div><h3>Interpretation</h3><p>Females and males with hip-related pain may demonstrate unique changes in dynamic joint stiffness after surgery, indicating return to activity may follow different trajectories for each sex. Additional work should examine the relationship between hip joint stiffness and treatment outcomes and identify additional movement-related rehabilitation targets.</p></div>","PeriodicalId":50992,"journal":{"name":"Clinical Biomechanics","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0268003324000196/pdfft?md5=9088a4904db47fcfadddb73961bfc100&pid=1-s2.0-S0268003324000196-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139559815","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}