Muscle-tendon units provide limited contributions to the passive stiffness of the index finger metacarpophalangeal joint

Kuo, Pei-Hsin; Deshpande, Ashish D.

doi:10.1016/j.jbiomech.2012.07.034

Cited by 42 publications

(31 citation statements)

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“…The concept that the degree of joint laxity of any one individual is generalized throughout the body and that the majority of the stiffness of the metacarpophalangeal joints of the hand is a result of the capsule ligament complex and not the muscle-tendon units supports this view [30], as well as reported high correlations between finger joint laxity and general joint mobility measures [27,31,32]. In parallel, a constitutional connective tissue weakness in the pelvic region is suggested as a cause in women presenting with genitourinary prolapse and urinary incontinence [33,34].…”

Section: Discussionmentioning

confidence: 99%

Finger joint laxity, number of previous pregnancies and pregnancy induced back pain in a cohort study

Lindgren

Kristiansson

2014

BMC Pregnancy Childbirth

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BackgroundGeneral joint hypermobility is estimated to affect about 10% of the population and is a prerequisite of heritable connective tissue disorders where fragile connective tissue is a prominent feature. Pregnancy induced back pain is common whereas about 10% of women still have disabling pain several years after childbirth. The pathogenesis of the pain condition is uncertain, although several risk factors are suggested including general joint hypermobility. In the present study, the possible association of peripheral joint mobility in early pregnancy on the incidence of back pain with onset during pregnancy and persisting after childbirth was explored.MethodsA cohort of 200 pregnant women recruited from antenatal health care clinics was assessed by questionnaire and clinical examination, including measurement of passive abduction of the left fourth finger, throughout pregnancy and at 13 weeks postpartum. Comparisons were made between women with and without back pain. Statistical tests used were χ2-test, t-test, Spearman correlation and multiple logistic regression.ResultsIn the cohort, the mean passive abduction angle of the left fourth finger increased from 40.1° in early pregnancy to 41.8° at the postpartum appointment. At the postpartum appointment, women in the back pain group had a significantly larger mean passive abduction angle of the left fourth finger of 4.4°, twice as many previous pregnancies and deliveries, and more than twice as frequent back pain in previous pregnancy, as compared with women with no persistent back pain. A similar pattern was displayed in late pregnancy. In a multiple regression analysis, the passive abduction angle of the left fourth finger in early pregnancy and the number of previous pregnancies were positively, significantly and independently associated to the incidence of back pain in late pregnancy and postpartum.ConclusionsFinger joint laxity as a reflection of constitutional weakness of connective tissue and number of previous pregnancies were associated with the development of back pain induced in pregnancy and persisting after childbirth. These factors may provide a foundation for development of targeted prevention strategies, but this have to be confirmed in future research including measurement of general joint laxity.

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Section: Discussionmentioning

confidence: 99%

Finger joint laxity, number of previous pregnancies and pregnancy induced back pain in a cohort study

Lindgren

Kristiansson

2014

BMC Pregnancy Childbirth

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“…PMAS is often differentiated from active musculoarticular stiffness that is generated by contractile structures of the muscles and reflex pathways (Detrembleur and Plaghki, 2000). For its part, PMAS is due to the rheological properties of non-contractile elements such as muscle-tendon units, aponeurosis, and capsuloligamentous complex (Leger and Milner, 2000;Kuo and Deshpande, 2012). Furthermore, Riemann and Schmitz described that PMAS included the contribution from all the tissues located around and within the joint, such as muscle-tendon units, skin, subcutaneous tissues, facias, ligaments, joint capsule, and cartilage (Riemann and Schmitz, 2012).…”

Section: Introductionmentioning

confidence: 99%

Effect of Age and Body Size on the Wrist's Viscoelasticity in Healthy Participants From 3 to 90 Years Old and Reliability Assessment

Nguyen

Herman

Mahaudens

et al. 2020

Front. Sports Act. Living

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Excessive or insufficient levels of passive musculoarticular stiffness (PMAS) can lead to joint impairment or instability. Quantifying the PMAS may provide a better understanding of neurological or musculoskeletal disorders. The aims of the present study were multiple: first, to assess the reliability of quantifying PMAS and to collect normative data on the wrist in healthy participants, and second, to assess the effect of age and body size on PMAS. For this purpose, a total of 458 participants from 3 to 90 years old were analyzed with an electromechanical oscillation device (EOD). Passive sinusoidal movements were induced in a flexion/extension pattern in the participants' wrists, enabling an objective measurement of elastic stiffness (EL) and viscous stiffness (VI). Both the dominant and non-dominant wrists were assessed. Two-way repeated-measures ANOVA revealed a sex differentiation from puberty (12-18 years old) and an increase of EL and VI from childhood to adulthood and a decrease of stiffness at old age. EL and VI values were associated with body size characteristics and age. After body size normalization, EL was no longer influenced by the variables measured. On the other hand, VI remained moderately influenced by age and body size. The current study was able to provide normative data of PMAS in the wrist of healthy participants.

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“…However, since the finger moves through a large range of motion in our simulation, it is unfitting to directly compare the induced joint reaction forces. This is because the finger joint reaction forces are also significantly affected by the finger pose due to the considerable forces required to stretch the passive structures at the joints and to overcome the effects of damping and system inertia [34,35].…”

Section: Discussionmentioning

confidence: 99%

“…1 Virtual prototyping framework illustrating the virtual design and control of an index finger exoskeleton using biomechanical, morphological, and controller performance measures preliminary prototype of the device. A linear passive rotational stiffness and damping element was added to the three index finger joints to represent the passive contributions from ligaments and other structures [34,35]. Also, linear spring elements (k 1 -k 4 in Fig.…”

Section: Initialmentioning

confidence: 99%

A Simulation Framework for Virtual Prototyping of Robotic Exoskeletons

Agarwal

Neptune

Deshpande

2016

Journal of Biomechanical Engineering

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A number of robotic exoskeletons are being developed to provide rehabilitation interventions for those with movement disabilities. We present a systematic framework that allows for virtual prototyping (i.e., design, control, and experimentation (i.e. design, control, and experimentation) of robotic exoskeletons. The framework merges computational musculoskeletal analyses with simulation-based design techniques which allows for exoskeleton design and control algorithm optimization. We introduce biomechanical, morphological, and controller measures to optimize the exoskeleton performance. A major advantage of the framework is that it provides a platform for carrying out hypothesis-driven virtual experiments to quantify device performance and rehabilitation progress. To illustrate the efficacy of the framework, we present a case study wherein the design and analysis of an index finger exoskeleton is carried out using the proposed framework.

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Muscle-tendon units provide limited contributions to the passive stiffness of the index finger metacarpophalangeal joint

Cited by 42 publications

References 41 publications

Finger joint laxity, number of previous pregnancies and pregnancy induced back pain in a cohort study

Finger joint laxity, number of previous pregnancies and pregnancy induced back pain in a cohort study

Effect of Age and Body Size on the Wrist's Viscoelasticity in Healthy Participants From 3 to 90 Years Old and Reliability Assessment

A Simulation Framework for Virtual Prototyping of Robotic Exoskeletons

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