Joint kinematics and spatial–temporal parameters of gait measured by an ultrasound-based system

Kiss, Rita M.; Kocsis, László; Knoll, Zsolt

doi:10.1016/j.medengphy.2004.04.002

Cited by 63 publications

(48 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…As reference system, a Zebris CMS-HS ultrasound-based motion measurement system was used [14]. This system The subject is in standing position.…”

Section: Angles Estimationmentioning

confidence: 99%

Outcome evaluation in shoulder surgery using 3D kinematics sensors

Coley¹,

Jolles²,

Farron³

et al. 2007

Gait & Posture

View full text Add to dashboard Cite

A new method of scoring systems for the functional assessment of the shoulder is presented. 3D accelerometers and gyroscopes attached on the humerus were used to differentiate a healthy from a painful shoulder. The method was first tested on 10 healthy volunteer subjects with no shoulder pathology. The system was then tested on 10 patients with unilateral shoulder pathology (rotator cuff disease, osteoarthritis) before and after surgery (3, 6 months). In order to evaluate the system, nine tests based on the Simple Shoulder Test (SST) were performed on each shoulder for each patient. Three scores were defined: the P score was based on the angular velocities and accelerations of the humerus; the RAV score was based only on the angular velocities of the humerus; the M score was based on the sum of all moments of the humerus. Our kinematic scores indicated significant differences between baseline and follow-up ( p < 0.05) and differentiated between patients with varying severity of the same condition. We demonstrated a reliable technique of evaluating shoulder pathology and the results of surgery. #

show abstract

“…As reference system, a Zebris CMS-HS ultrasound-based motion measurement system was used [14]. This system The subject is in standing position.…”

Section: Angles Estimationmentioning

confidence: 99%

Outcome evaluation in shoulder surgery using 3D kinematics sensors

Coley¹,

Jolles²,

Farron³

et al. 2007

Gait & Posture

View full text Add to dashboard Cite

show abstract

“…The spatial coordinates of the markers were measured using a ZEBRIS CMS10 (Zebris, Medizintechnik GmbH, Germany) computer-controlled, ultrasoundbased motion analysis system (Figure 1d.). 8,11 The measuring methods have been detailed in Kiss et al 10 The ultrasound-based measuring head was located to the side of the object at 30 degrees (Figure 2.), and the measuring frequency was 100 Hz. The accuracy of the measuring system is less than 1 mm.…”

Section: Methodsmentioning

confidence: 99%

“…The average values of successfully completed trials were taken as the value for each measuring position; a minimum of two successfully completed trials were required for each measuring position. [8][9]10,12 The oscillating PosturoMed device with the participant on it is a damped system. The differential equation of the damped system is as follows (Figure 4.).…”

Section: Methodsmentioning

confidence: 99%

Effect of kayaking on balancing ability after sudden changes in direction

Németh¹,

Kiss²,

Aradi³

2013

Biomech Hung

View full text Add to dashboard Cite

IntroductionDifferent sports influence the balancing ability variously. The aim of this study to examine the effect of kayaking on dynamical balancing ability after sudden changes in direction. MethodsThe investigation included 5 race-kayakists and 5 leisure-time sportsmen. Dynamical balancing ability have analyzed by the ultrasound-based sudden perturbation test (provocation test). A rigid platform have moved from its central position and fixed by a fastening unit. The rigid platform connected to a rigid frame by 4 or 8 steel springs of identical strength. The platform swings back into its original, resting position, stimulating sudden disturbances after releasing the fastening unit. The participant must balance and re-equilibrate as the plate moves. The motions of the rigid plate were recorded by an ultrasound-based system. From this motion the Lehr's damping ratio can be calculated and it characterizes the balancing ability of the investigated person. ResultsFor the kayakist group, the average values of the Lehr's damping ratio determined were significantly bigger while standing on one limb and on both limbs compared to the parameters for the control group. DiscussionA high level of complex coordination is required to regain equilibrium after a sudden change in direction. Sports activities can develop this ability. This investigation demonstrate that not only the traditional methods (a sudden stoppage from running, sudden setting in motion, jumping or changing in direction) but motion in a continuously moving media (in aqueous media) can also develop the balancing ability. During kayaking the media always changes; moreover, it often surges so persistent balancing is essential. The results draw attention to the fact that dynamic balancing ability can be developed by other than traditional methods.

show abstract

“…The new, simplified gait analysis was validated by clinical gait analysis, consisting of the ARMMODEL measuring method with a ZEBRIS ultrasound-based measuring system [7].…”

Section: Methods Of Verificationmentioning

confidence: 99%

“…The evaluation of gait parameters during walking is helpful in assessing abnormal gait, in quantifying improvements resulting from intervention, or in predicting subsequent events such as ageing or falls. Since ultrasound-based measuring and recording techniques were developed, gait analysis has been frequently used in almost all fields of human locomotion [7,9]. An ultrasoundbased measuring system is used for functional performance assessment after treatment or surgery [2,3,10,11].…”

Section: Introductionmentioning

confidence: 99%

Verification of simplified gait analysis

Kiss¹,

Kocsis²

2009

Per. Pol. Civil Eng.

Self Cite

View full text Add to dashboard Cite

In this study we describe a simplified gait analysis system for the estimation of spatial-temporal parameters and kinetic parameters during walking on an instrumented treadmill. This method proposes to compute the values of temporal (length of double support phase, length of stance phase, time of step, time of stride) and few spatial parameters (step length, stride length, cadence) from the graph of time vs. ground reaction force at a constant gait speed. The method was verified by a clinical gait analysis method using a ZEBRIS ultrasound-based measuring system with ARMMODEL software, and the measurement error rate of the method was determined by statistical calculations. The maximum relative value of the average difference of temporal parameters is 0.79 % in cycle time and that of spatial parameters is 0.66%. On the basis of statistical analysis, it can be established that the measurement method is reproducible. This system is simple, inexpensive and does not provoke any discomfort to subjects. It can be carried on for long periods of time during a treadmill walk, thus providing new longitudinal information such as the stride-to-stride variability of gait. Several clinical applications can be proposed such as outcome evaluation after different orthopaedical, rheumatological, neurological diseases, and monitoring of the rehabilitation process.

show abstract

Joint kinematics and spatial–temporal parameters of gait measured by an ultrasound-based system

Cited by 63 publications

References 6 publications

Outcome evaluation in shoulder surgery using 3D kinematics sensors

Outcome evaluation in shoulder surgery using 3D kinematics sensors

Effect of kayaking on balancing ability after sudden changes in direction

Verification of simplified gait analysis

Contact Info

Product

Resources

About