Development and Evaluation of the Measurement System for the Human Shoulder Joint Based on the 6 DOF Kinematic Modelling

Shimomura, Yoshihiro; Iwanaga, Koichi; Harada, Hiroyuki; Katsuura, Tetsuo

doi:10.2114/jpa.19.43

Cited by 3 publications

(2 citation statements)

References 13 publications

(27 reference statements)

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“…The hardware manufacturer reports a root mean square accuracy of 0.5° for orientation and 1.8 mm for position for the sensors used. Error in scapular measurements with this system have been reported by others to be 2-3 mm with good repeatability within testing sessions (Meskers et al, 1999; Shimomura et al, 2000; Thigpen et al, 2005). …”

Section: Methodsmentioning

confidence: 52%

Scapula and humeral movement patterns and their relationship with pain: a preliminary investigation

Hardwick

Lang

2011

International Journal of Therapy and Rehabilitation

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Purpose-Altered movement patterns may contribute to this shoulder pain following stroke. The purpose of this study was to examine scapular and humeral movement patterns in people with hemiparetic shoulder pain (HSP), and to explore the relationships between pain and these movement patterns.Methods-Kinematic data from nine participants with HSP and twelve matched controls were collected as they performed scapular plane shoulder elevation. Correlation analyses were used to examine relationships between participants' ratings of pain and kinematic data.Results-The HSP group had decreased humeral external rotation compared to the control group. Despite a trend toward decreased scapular upward rotation, there was considerable variation in scapular upward rotation movement patterns across the participants with HSP. Scapular tilt was not different between groups. There was an inverse relationship between pain and scapular upward rotation, indicating that those with more pain had less scapular upward rotation.Conclusions-People with HSP demonstrated scapular and humeral movement patterns that differed from controls, where some of the altered movement patterns were related to reported pain levels. Rehabilitation management of people with HSP may be improved by careful assessment of scapulohumeral movement patterns and treatments aimed at normalizing these patterns.

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Section: Methodsmentioning

confidence: 52%

Scapula and humeral movement patterns and their relationship with pain: a preliminary investigation

Hardwick

Lang

2011

International Journal of Therapy and Rehabilitation

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“…Since in our study there are many variables, we used a polynomial regression function to calculate and establish proposal estimation models. Moreover, this type of regression function has also been used in previous studies for musculo-skeletal modeling in human upper limb muscles (Pigeon et al, 1996;Shimomura et al, 2000;Wang et al, 1998). The polynomial regression (which was developed by calculating the coefficients of all terms) can be determined using the following expression:…”

Section: Model Descriptionmentioning

confidence: 99%

Muscular Performance Modeling of the Upper Limb in Static Postures

Mamaghani

Shimomura

Iwanaga

et al. 2003

J. Physiol. Anthropol.

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The purpose of the present paper is to describe and evaluate the polynomial models for predicting the muscular work capacity of the upper limb during sustained holding tasks. This research was concerned with the relationship between indicators of performance, i.e., specific posture or specific level of maximum voluntary contraction (MVC), and then modeling the functional data based on experimental results to estimate factors that may have an effect on task performance. To this end, we designed an experiment using 10 subjects in which each subject performed sustained isometric shoulder and elbow flexion endurance exercise under 27 conditions [3 shoulder angles (SA)x3 elbow angles (EA)x3 levels of %MVC]. Throughout all experiments, subjective perception of effort was assessed using the Borg scale, every 60, 30, and 10 s during the 20%, 40%, and 60% MVC tests, respectively. Proposal models were represented by three approaches: model A: estimation of endurance time (ET), with input variables such as SA, EA, and %MVC; model B: estimation of recommendation time (RT, the time during which the operator was able to maintain a position under the desired condition), with input variables such as SA, EA, %MVC, and required rate on the Borg scale; and model C: estimation of limit strength or %MVC, with input variables such as SA, EA, request limit time for work (LT), and required rate on the Borg scale. Statistical analysis indicated that the three proposal estimation models based on polynomial regression functions showed high significance (p<0.0001). The proposal models suggested and recommended the possibility of finding the best positions entailing the reduction and minimization of total muscular strain from manual material handling tasks in different work situations, with the consequent increase in work efficiency.

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Reproducibility of a 3-dimensional gyroscope in measuring shoulder anteflexion and abduction

Penning

Guldemond

Bie

et al. 2012

BMC Musculoskelet Disord

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BackgroundFew studies have investigated the use of a 3-dimensional gyroscope for measuring the range of motion (ROM) in the impaired shoulder. Reproducibility of digital inclinometer and visual estimation is poor. This study aims to investigate the reproducibility of a tri axial gyroscope in measurement of anteflexion, abduction and related rotations in the impaired shoulder.MethodsFifty-eight patients with either subacromial impingement (27) or osteoarthritis of the shoulder (31) participated. Active anteflexion, abduction and related rotations were measured with a tri axial gyroscope according to a test retest protocol. Severity of shoulder impairment and patient perceived pain were assessed by the Disability of Arm Shoulder and Hand score (DASH) and the Visual Analogue Scale (VAS). VAS scores were recorded before and after testing.ResultsIn two out of three hospitals patients with osteoarthritis (n = 31) were measured, in the third hospital patients with subacromial impingement (n = 27).There were significant differences among hospitals for the VAS and DASH scores measured before and after testing. The mean differences between the test and retest means for anteflexion were −6 degrees (affected side), 9 (contralateral side) and for abduction 15 degrees (affected side) and 10 degrees (contralateral side).Bland & Altman plots showed that the confidence intervals for the mean differences fall within −6 up to 15 degrees, individual test - retest differences could exceed these limits.A simulation according to ‘Generalizability Theory’ produces very good coefficients for anteflexion and related rotation as a comprehensive measure of reproducibility. Optimal reproducibility is achieved with 2 repetitions for anteflexion.ConclusionsMeasurements were influenced by patient perceived pain. Differences in VAS and DASH might be explained by different underlying pathology. These differences in shoulder pathology however did not alter the reproducibility of testing. The use of a tri axial gyroscope is a simple non invasive and reproducible method for the recording of shoulder anteflexion and abduction. Movements have to be repeated twice for reproducible results.

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Development and Evaluation of the Measurement System for the Human Shoulder Joint Based on the 6 DOF Kinematic Modelling

Cited by 3 publications

References 13 publications

Scapula and humeral movement patterns and their relationship with pain: a preliminary investigation

Scapula and humeral movement patterns and their relationship with pain: a preliminary investigation

Muscular Performance Modeling of the Upper Limb in Static Postures

Reproducibility of a 3-dimensional gyroscope in measuring shoulder anteflexion and abduction

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