Clinical Biomechanics最新文献

{"title":"Influence of hip and lumbar extensor strength on lumbar moments during a squat lift: An evaluation of persons with and without low back pain","authors":"Christopher S. Patterson ,&nbsp;Skulpan Asavasopon ,&nbsp;Lida Gharibvand ,&nbsp;Christopher M. Powers","doi":"10.1016/j.clinbiomech.2025.106444","DOIUrl":"10.1016/j.clinbiomech.2025.106444","url":null,"abstract":"<div><h3>Background</h3><div>Individuals with low back pain have been reported to exhibit weakness of the hip and lumbar extensor muscle groups. It is possible that persons with low back pain may perform a squat lift in a manner to accommodate diminished muscular capacity. The objective of the study was to evaluate the influence of hip and lumbar extensor strength on lumbar moments in persons with and without low back pain.</div></div><div><h3>Methods</h3><div>Fifty individuals (25 with low back pain and 25 without low back pain) between the ages of 18–50 years participated. Strength of the lumbar and hip extensors was measured using a motor-driven dynamometer. Lumbar and hip extensor moments were quantified during the performance of a squat lift.</div></div><div><h3>Findings</h3><div>On average lumbar extensor and hip extensor moments during the squat lift were significantly lower in those with low back pain. In addition, lumbar extensor and hip extensor strength were significantly lower in those with low back pain compared to healthy individuals. In persons with low back pain, significant positive associations were found between lumbar extensor strength and lumbar extensor moments (<em>r</em> = 0.40, <em>p</em> = 0.05) and hip extensor strength and lumbar extensor moments (<em>r</em> = 0.48, <em>p</em> = 0.02). Similar relationships were found in the healthy group.</div></div><div><h3>Interpretation</h3><div>Individuals with low back pain performed the squat lift task in a manner that resulted in reduced lumbar moments. Lower lumbar extensor moments were associated with lower hip and lumbar strength, suggesting that muscular capacity may influence an individual's lifting strategy.</div></div>","PeriodicalId":50992,"journal":{"name":"Clinical Biomechanics","volume":"122 ","pages":"Article 106444"},"PeriodicalIF":1.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143081052","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":"Functional knee bracing provides protection to the anterior cruciate ligament in response to rotatory loads","authors":"Sene K. Polamalu ,&nbsp;Ehab M. Nazzal ,&nbsp;Emre Anil Ozbek ,&nbsp;Gian Andrea Lucidi ,&nbsp;Luke T. Mattar ,&nbsp;Andrew L. Sprague ,&nbsp;Volker Musahl ,&nbsp;Richard E. Debski","doi":"10.1016/j.clinbiomech.2024.106405","DOIUrl":"10.1016/j.clinbiomech.2024.106405","url":null,"abstract":"<div><h3>Background</h3><div>The aim of the study was to quantify the effect of functional knee bracing on native knee kinematics and the in-situ force in the ACL in response to external loading.</div></div><div><h3>Methods</h3><div>A robotic testing system was used to apply three external loads from full extension to 60° of flexion to eight fresh frozen human cadaveric knees: 1) a 134 N anterior load, 2) a combined 5-Nm internal rotation +5-Nm valgus torque, and 3) a combined 5-Nm external rotation +5-Nm valgus torque. For native and braced states, kinematics were recorded and the in-situ force in the ACL was determined.</div></div><div><h3>Findings</h3><div>In response to the combined internal + valgus torque, ideal bracing significantly reduced internal rotation at each flexion angle and valgus rotation at 60° of flexion and reduced the in-situ force in the ACL at full extension and 30° of flexion. In response to the combined external + valgus torque, ideal bracing significantly reduced external rotation at each flexion angle and the in-situ force in the ACL at full extension. Ideal bracing had no effect on kinematics in the other degrees of freedom or on the in-situ force in the ACL in response to a 134 N anterior load.</div></div><div><h3>Interpretation</h3><div>Ideal knee bracing provided a protective effect on the ACL in response to a combined 5-Nm internal rotation +5-Nm valgus torque but had minimal impact in response to anterior loading and valgus torque. Therefore, ideal functional knee bracing may improve rotatory stability and provide protection to the ACL.</div></div>","PeriodicalId":50992,"journal":{"name":"Clinical Biomechanics","volume":"122 ","pages":"Article 106405"},"PeriodicalIF":1.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142796538","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":"Upper body gait deviations in children with Duchenne muscular dystrophy","authors":"Jacqueline Romkes ,&nbsp;Katrin Bracht-Schweizer ,&nbsp;Michèle Widmer ,&nbsp;Morgan Sangeux ,&nbsp;Elke Viehweger","doi":"10.1016/j.clinbiomech.2024.106402","DOIUrl":"10.1016/j.clinbiomech.2024.106402","url":null,"abstract":"<div><h3>Background</h3><div>Duchenne muscular dystrophy is primarily a disease of progressive muscle degeneration affecting the whole body. It is important to preserve the patients' walking ability as long as possible. Inconclusive information on Duchenne muscular dystrophy gait pattern is available for the lower body and missing for the upper body. This study aimed to objectively investigate upper body gait deviations in a group of patients with Duchenne muscular dystrophy compared to typically developing peers.</div></div><div><h3>Methods</h3><div>Kinematic data of twelve boys with Duchenne muscular dystrophy that underwent three-dimensional full-body gait analysis were investigated retrospectively. Data were compared to sixteen healthy children of same age at similar walking speed. Statistical tests included the student independent <em>t</em>-test (with Holm-Bonferroni correction), Hedges'g for effect size, and statistical non-parametric mapping two-sample t-test (with Bonferroni correction).</div></div><div><h3>Findings</h3><div>Duchenne muscular dystrophy compared to the healthy group: In the sagittal plane, the thorax segment was more posteriorly tilted. In addition, the relative angle between pelvis and thorax segment showed more backwards lean with increased shoulder extension. In the frontal plane, the patients walked with increased shoulder abduction and took wider strides. In the transverse plane, thorax rotation was not different between groups. Thorax range of motion was increased in all three planes.</div></div><div><h3>Interpretation</h3><div>Including the upper body gait kinematics, especially of the trunk, adds valuable objective information on the understanding of the Duchenne muscular dystrophy gait pattern. Our findings contribute to improved understanding of full-body gait compensations in this patient group.</div></div>","PeriodicalId":50992,"journal":{"name":"Clinical Biomechanics","volume":"122 ","pages":"Article 106402"},"PeriodicalIF":1.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142792290","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":"Freezing of gait shapes the postural control of individuals with Parkinson's disease: Effect of visual information and medication states","authors":"Lucas H.C.C. Santos ,&nbsp;Paulo B. de Freitas ,&nbsp;Sandra M.S.F. Freitas","doi":"10.1016/j.clinbiomech.2024.106415","DOIUrl":"10.1016/j.clinbiomech.2024.106415","url":null,"abstract":"<div><h3>Background</h3><div>Several measures of the center of pressure have been used to describe magnitude and structure of the postural sway in individuals with Parkinson's disease (PD). This study aimed to examine whether both the magnitude and structure of the center of pressure trajectory can differentiate PD individuals with and without freezing of gait in both <em>On-</em> and <em>Off-</em>medication states and with eyes open and closed.</div></div><div><h3>Methods</h3><div>Twenty-four individuals with PD (14 without and 10 with freezing of gait) were tested. Participants stood as still as possible on a force plate for 30 s with eyes open and closed and <em>On</em>- and <em>Off</em>-medication. Analyses of variance were used to test the effect of group, medication state, and visual information on the magnitude (area) and structure (shape measured by the ratio between axes length and orientation) of the center of pressure ellipses.</div></div><div><h3>Findings</h3><div>The center of pressure ellipses were less elongated in <em>On</em>-medication state and for PD with freezing of gait than without freezing of gait. Moreover, the magnitude of the ellipses was larger for PD with freezing than without freezing of gait only in the <em>On-</em>medication state. The orientation of the ellipses was more diagonal for individuals with freezing, in the <em>On</em>-medication state, and with the eyes closed when compared to individuals with PD without freezing under the same conditions.</div></div><div><h3>Interpretation</h3><div>Magnitude and structure of the postural sway differed between PD individuals with and without freezing of gait, depending on the medication state and the availability of the visual information.</div></div>","PeriodicalId":50992,"journal":{"name":"Clinical Biomechanics","volume":"122 ","pages":"Article 106415"},"PeriodicalIF":1.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142866160","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":"Innovative equipment for lower limb muscle strength measurement: Design and application in sarcopenia screening","authors":"Qing Xiao ,&nbsp;Jie Jiang ,&nbsp;Yixiao Chen ,&nbsp;Shulang Han ,&nbsp;Yu Chen ,&nbsp;Fei Yan ,&nbsp;Jirong Yue","doi":"10.1016/j.clinbiomech.2024.106418","DOIUrl":"10.1016/j.clinbiomech.2024.106418","url":null,"abstract":"<div><h3>Background</h3><div>Grip Strength has been established as a practical and efficient method for screening and diagnosing sarcopenia. It is recognized that with advancing age, there is a more significant decline in lower limb muscle mass compared to the upper limb. However, due to the inherent complexity of assessing lower limb muscle strength compared to measuring Grip Strength, these assessments have not been universally adopted for sarcopenia screening.</div></div><div><h3>Methods</h3><div>We measured the Forefoot Strength, Heel Strength, Knee Extension Strength, and Hip Extension Strength in 98 participants using portable equipment designed for lower limb muscle strength assessment. We compared the efficacy of using lower limb muscle strength cutoff values with grip strength for the screening of sarcopenia.</div></div><div><h3>Findings</h3><div>The optimal cutoff values for screening sarcopenia in males using Knee Extension Strength and Hip Extension Strength were 140.1 N and 121.7 N, respectively, while for females they were 91.6 N and 90.4 N, respectively. In binary logistic regression models adjusted for age and body weight, Knee Extension Strength and Hip Extension Strength were found to be associated with sarcopenia in both males and females. Moreover, the efficacy of sarcopenia screening using Knee Extension Strength or Hip Extension Strength cutoff values was superior to that of grip strength alone, and the combination of Knee Extension Strength and Hip Extension Strength cutoff values yielded the best results for sarcopenia screening.</div></div><div><h3>Interpretation</h3><div>Measurements of Knee Extension Strength and Hip Extension Strength may potentially serve as a promising method for sarcopenia screening.</div></div>","PeriodicalId":50992,"journal":{"name":"Clinical Biomechanics","volume":"122 ","pages":"Article 106418"},"PeriodicalIF":1.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142911101","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":"Differential gait features across Parkinson's disease clinical subtypes","authors":"Sidney T. Baudendistel ,&nbsp;Kerri S. Rawson ,&nbsp;Christina N. Lessov-Schlaggar ,&nbsp;Baijayanta Maiti ,&nbsp;Paul T. Kotzbauer ,&nbsp;Joel S. Perlmutter ,&nbsp;Gammon M. Earhart ,&nbsp;Meghan C. Campbell","doi":"10.1016/j.clinbiomech.2025.106445","DOIUrl":"10.1016/j.clinbiomech.2025.106445","url":null,"abstract":"<div><h3>Background</h3><div>Clinical subtypes in Parkinson's disease including non-motor manifestations may be more beneficial than subtypes based upon motor manifestations alone. Inclusion of gait metrics may help identity targets for rehabilitation and potentially predict development of non-motor symptoms for individuals with Parkinson's disease. This study aims to characterize gait differences across established multi-domain subtypes.</div></div><div><h3>Methods</h3><div>“Motor Only”, “Psychiatric &amp; Motor” and “Cognitive &amp; Motor” clinical subtypes were established through motor, cognitive, and psychiatric assessment. Walking was assessed in the “OFF” medication state. Multivariate analysis of variance identified differences in gait domains across clinical subtypes.</div></div><div><h3>Findings</h3><div>The “Motor Only” subtype exhibited the fastest velocity, longest step length, and least timing variability (swing, step, stance), compared to “Psychiatric &amp; Motor” and “Cognitive &amp; Motor” subtypes. Stance time differed across subtypes; “Psychiatric &amp; Motor” subtype had the longest stance time, followed by “Cognitive &amp; Motor”, then “Motor only”. The “Psychiatric &amp; Motor” group had different asymmetry from the “Cognitive &amp; Motor” subtype, as “Psychiatric &amp; Motor” walked with longer steps on their less-affected side while the “Cognitive &amp; Motor” subtype displayed the opposite pattern. No differences were observed for swing time, step velocity variability, step length variability, width measures, or other asymmetry measures.</div></div><div><h3>Interpretation</h3><div>Cognitive and Psychiatric subtypes displayed worse gait performance than the “Motor only” group. Stance time and step length asymmetry were different between Psychiatric and Cognitive subtypes, indicating gait deficits may be related to distinct aspects of non-motor manifestations. Gait signatures may help clinicians distinguish between non-motor subtypes, guiding personalized treatment.</div></div>","PeriodicalId":50992,"journal":{"name":"Clinical Biomechanics","volume":"122 ","pages":"Article 106445"},"PeriodicalIF":1.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143147563","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":"Patients with multiple sclerosis and low disability display cautious rotational behavior during gait initiation","authors":"C. Massot ,&nbsp;J. Bègue ,&nbsp;E. Simoneau-Buessinger ,&nbsp;C. Donze ,&nbsp;T. Caderby ,&nbsp;S. Leteneur","doi":"10.1016/j.clinbiomech.2025.106431","DOIUrl":"10.1016/j.clinbiomech.2025.106431","url":null,"abstract":"<div><h3>Background</h3><div>Multiple sclerosis induces locomotor impairments. The objective was to characterize the effects of Multiple Sclerosis on whole-body angular momentum control during gait initiation.</div></div><div><h3>Methods</h3><div>Fifteen patients with Multiple Sclerosis with Expanded Disability status scale of 2.5 and 16 healthy participants were instructed to perform gait initiation. Spatiotemporal parameters, whole-body angular momentum, net external moment about the body's center of mass and its components were calculated by using a 3D motion capture system and two force plates.</div></div><div><h3>Findings</h3><div>Patients with Multiple Sclerosis had a significantly smaller whole-body angular momentum range during the double support phase of gait initiation in the transversal plane (<em>p</em> = 0.011), and smaller net external moment at the transition between the initial double support phase and the execution phase in the sagittal plane (<em>p</em> = 0.013). In the transversal plane, patients with Multiple Sclerosis had a smaller net external moment during the double support phase (<em>p</em> = 0.024) and between the double support phase and the execution phase (<em>p</em> &lt; 0.001).</div></div><div><h3>Interpretation</h3><div>Despite preserved spatiotemporal parameters during gait initiation, patients with Multiple Sclerosis with low disability had reduced net external moments in the transversal and sagittal planes during the critical transitional period of this functional task, which appeared as a compensatory modality to preserve global postural stability. This finding highlights the cautious rotational behaviors in these planes to prevent the risk of falling and preserve dynamic stability. Whole-body angular momentum and net external moment are relevant parameters for functional and disease progression follow-up of the disease.</div></div>","PeriodicalId":50992,"journal":{"name":"Clinical Biomechanics","volume":"122 ","pages":"Article 106431"},"PeriodicalIF":1.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143030244","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":"Knee loading and joint pain during daily activities in people with knee osteoarthritis: A systematic review and meta-analysis","authors":"Yi Wan ,&nbsp;Polly McGuigan ,&nbsp;James Bilzon ,&nbsp;Logan Wade","doi":"10.1016/j.clinbiomech.2025.106433","DOIUrl":"10.1016/j.clinbiomech.2025.106433","url":null,"abstract":"<div><h3>Background</h3><div>Knee loading is associated with the severity and progression of knee osteoarthritis, while knee pain contributes to reduced functional ability and quality of life. In this systematic review, we quantified knee loading and knee pain during different daily activities in people with knee osteoarthritis and explored methodological reasons for differences between studies.</div></div><div><h3>Methods</h3><div>PubMed, Web of Science, Scopus, and manual searches were performed up to July 2024, to retrieve studies measuring knee loading and knee pain in walking, sit-to-stand and stair climbing of people with knee osteoarthritis. Descriptive data synthesis and meta-analysis were performed using a mixed-effect model.</div></div><div><h3>Findings</h3><div>183 studies were included. Walking led to the greatest knee loading, followed by stair climbing and finally sit-to-stand, although only sit-to-stand was significantly lower than the others (<em>p</em> &lt; 0.001). Stair ascent had the greatest knee pain, followed by walking, stair descent and then sit-to-stand. In addition, our results show a strong negative correlation between knee loading and pain during walking (<em>r</em> = −0.507).</div></div><div><h3>Interpretation</h3><div>The trend of knee loading across activities, while non-significant, is consistent with our previous experimental study. The differences compared to other studies are likely be due to the high heterogeneity in the tested population and differences in methodology. Additionally, there were a substantial number of studies only examining a single activity (primarily walking), which could bias the results. Therefore, future studies should detail participant characteristic and experiment design. In addition, inclusion of a control group is recommended to account for knee loading offsets when comparing results across studies.</div></div>","PeriodicalId":50992,"journal":{"name":"Clinical Biomechanics","volume":"122 ","pages":"Article 106433"},"PeriodicalIF":1.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143015786","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":"Mechanical function of the annulus fibrosus is preserved following quasi-static compression resulting in endplate fracture","authors":"John G. McMorran ,&nbsp;Andra Neptune ,&nbsp;Diane E. Gregory","doi":"10.1016/j.clinbiomech.2024.106425","DOIUrl":"10.1016/j.clinbiomech.2024.106425","url":null,"abstract":"<div><h3>Background</h3><div>Vertebral fractures in young populations are associated with intervertebral disc disorders later in life. However, damage to the annulus fibrosus has been observed in rapidly loaded spines even without the subsequent occurrence of a fracture. Therefore, it may not be the fracture event that compromises the disc, but rather the manner in which the disc is loaded. The purpose of this study was to quantify the mechanical properties of the annulus fibrosus following quasi-static compressive loading of the motion segment either to sub-fracture or fracture-inducing magnitude.</div></div><div><h3>Methods</h3><div>Porcine cervical motion segments were axial compressed at 0.1 mm/s, either until endplate fracture occurred (‘fracture group’), or until segments reached 75 % of average fracture stress as determined from the fracture group (‘sub-fracture group’). An unloaded control group was also included. Post-loading, three samples of the annulus were excised. The first was mounted in a 180^o peel test configuration in order to quantify lamellar adhesion. The other two samples were excised from the superficial and midspan region of the annulus and were exposed to uniaxial tension to 50 % strain.</div></div><div><h3>Findings</h3><div>Lamellar adhesion and tensile annulus mechanics did not differ between the fracture and sub-fracture group, nor between the unloaded controls.</div></div><div><h3>Interpretation</h3><div>Given the lack of differences in annular mechanical properties across the three conditions, it was concluded that under very slow, quasi-static compressive loading conditions, the annulus appeared undamaged even in the group that sustained a fracture; this is likely because a significant viscoelastic response was not generated in the disc under these slow loading conditions.</div></div>","PeriodicalId":50992,"journal":{"name":"Clinical Biomechanics","volume":"122 ","pages":"Article 106425"},"PeriodicalIF":1.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142900223","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":"Difference between the thumb motions in carpal tunnel syndrome and trapeziometacarpal osteoarthritis","authors":"Kentaro Tsuji ,&nbsp;Akira Kodama ,&nbsp;Hiroshi Kurumadani ,&nbsp;Teruyasu Tanaka ,&nbsp;Masaru Munemori ,&nbsp;Yuichi Sumida ,&nbsp;Toru Sunagawa ,&nbsp;Hiroshi Takahashi ,&nbsp;Nobuo Adachi","doi":"10.1016/j.clinbiomech.2025.106447","DOIUrl":"10.1016/j.clinbiomech.2025.106447","url":null,"abstract":"<div><h3>Background</h3><div>This study quantified thumb movement in patients with trapeziometacarpal osteoarthritis and carpal tunnel syndrome and examined the characteristics of each disorder using three-dimensional motion analysis.</div></div><div><h3>Methods</h3><div>Twenty-three hands of 23 patients with trapeziometacarpal osteoarthritis, 88 hands of 73 patients with idiopathic carpal tunnel syndrome, and 29 hands of 20 healthy volunteers were included in this study; three-dimensional thumb kinematics were measured during the circumduction task using a retroreflective surface-based marker method.</div></div><div><h3>Findings</h3><div>Trajectory of thumb tip reduced in both patient groups compared to healthy controls, with carpal tunnel syndrome exhibiting the flattening shape. Trapeziometacarpal osteoarthritis patients had decreased range of motion in all directions at the trapeziometacarpal joint, while maintaining flexion-extension at the metacarpophalangeal and interphalangeal joints. Carpal tunnel syndrome patients showed reduced motion particularly in metacarpophalangeal and interphalangeal flexion-extension. Joint contribution analysis revealed decreased trapeziometacarpal involvement and increased compensatory metacarpophalangeal and interphalangeal movements in trapeziometacarpal osteoarthritis, while carpal tunnel syndrome showed impaired metacarpophalangeal abduction.</div></div><div><h3>Interpretation</h3><div>This study provides novel insights into the distinct kinematic characteristics of trapeziometacarpal osteoarthritis and carpal tunnel syndrome, offering potential for improved screening and assessment of thumb motor impairments in these conditions.</div><div>Evidence Level: Diagnostic LEVEL III.</div></div>","PeriodicalId":50992,"journal":{"name":"Clinical Biomechanics","volume":"123 ","pages":"Article 106447"},"PeriodicalIF":1.4,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143349027","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}