A Study of the Lower Limbs Movement of Elderly Adults by Vibratory Somatosensory Stimulation Applied to the Ankle Tendon

2011 ◽  
Vol 145 ◽  
pp. 390-394
Author(s):  
Ha Ju So ◽  
Ki Young Kwak ◽  
Seong Hyun Kim ◽  
Dong Wook Kim
Keyword(s):  
Knee Joint ◽  
Ankle Joint ◽  
Motion Analysis ◽  
Hip Joint ◽  
Lower Limbs ◽  
Somatosensory Stimulation ◽  
Motion Data ◽  
Somatosensory Stimulus ◽  
Joint Contribution ◽  
Staircase Walking

Normal walking on staircases is a very important ordinary activity. It is a complicated motion that requires a big muscular strength and moment, and a big joint exercise scope. Due to such characteristics, staircase walking may be an obstacle to those with weakened lower limb muscle strength, and actually, fall injury accidents occur. Existing studies focus on dynamic changes in staircase walking. However, this study aimed to analyze staircase-walking characteristics evidenced when applying vibratory somatosensory stimulus to the ankle joint in a bid to reduce the risk of fall injuries associated with staircase walking. Five elderly male subjects, who had no disease related to the musculoskeletal system, participated in experiments. Experiments were held in a motion analysis laboratory equipped with 3-D motion analysis systems, force platforms, etc. In order to gather motion data, subjects wore markers and vibratory stimulation devices designed to apply somatosensory stimulus to ankle joints, and climbed down a staircase with the height adjusted appropriately. Using motion data gathered from staircase-walking, the ankle joint, knee joint and hip joint angles were obtained, and thus each joint's contribution to the motion was calculated. In the case of vibratory somatosensory stimuli being applied to the Achilles's tendon, the ankle joint contributed more to the motion of climbing down a staircase than the knee joint and the hip joint did. On the other hand, in the case of vibratory somatosensory stimulus being applied to the anterior tibialis, the ankle joint contribution was lowered, and to make up for it, the knee joint and the hip joint contribution increased. This outcome revealed that the effect of the vibratory somatosensory stimulation applied to the ankle joint can appear in not only the ankle joint, but also in the whole lower limbs due to chain reaction.

C211 Motion Analysis of natural knee joint and natural hip joint in Golf Swing

2014 ◽  
Vol 2014.25 (0) ◽  
pp. 147-148
Author(s):  
Hidehiko HIGAKI ◽  
Yifeng WANG ◽  
Satoru IKEBE ◽  
Yoshitaka SHIRAISHI ◽  
Takeshi SHIMOTO ◽  
...  
Keyword(s):  
Knee Joint ◽  
Motion Analysis ◽  
Hip Joint ◽  
Golf Swing

Kinematical Analysis of Dismount of Double Salto Backwards Stretched with 2/1 Twists

2013 ◽  
Vol 312 ◽  
pp. 210-214
Author(s):  
Ji He Zhou
Keyword(s):  
Knee Joint ◽  
Hip Joint ◽  
Joint Angle ◽  
Lower Limbs ◽  
Horizontal Distance ◽  
Flight Phase ◽  
Knee Joint Angle ◽  
Kinematical Analysis ◽  
Kinematics Parameters ◽  
Improve Stability

The aim of this study was to revealed the top-notch gymnast Kai Zous dismount of double salto backwards stretched with 2/1 twist. The findings showed that (1) at flight phase, (a) kinematics parameters had slightly different at off-bar moment in 2011 and 2012, (b) flight posture fitted with gymnastic rules, (2) at landing phase, (a) the lower limbs of Kai Zou didnt stretch, it was unfavorable for the following buffering, (b) his hip joint angle was smaller and knee joint angle was larger after landing in 2012, and these were favorable for the finish of buffering element, it will increase the horizontal distance of C.G. and improve stability of landing, (c) mean hip joint angle was 117.9o at landing, the buffering time was 0.215s.

Analysis on Motion Trauma for Human’s Running by Motion Capture

2013 ◽  
Vol 311 ◽  
pp. 232-237
Author(s):  
Jian Wei Li ◽  
Xiao Wen Li ◽  
Hua Lei Wu
Keyword(s):  
Knee Joint ◽  
Ankle Joint ◽  
Motion Capture ◽  
Limb Movements ◽  
Motion Data

Running is a kind of high-repetitive limb movements, which can possibly suffer knee-joint and ankle joint badly. In this paper, the author uses advanced instrument of motion capture to gain the gait data of human’s running motion，then create the curve of motion data tracing the knee-joint and ankle joint guided by the theory of biomechanics and kinesiology. Last we get the cause about the suffering of meniscus and ligament of knee-joint and ankle joint during the process of human’s running motion. The result of research can apply to biomechanics of human and the design of exerciser.

scholarly journals Pre-Surgery Planning of Lower Limbs Major Joints Arthroplasty

2019 ◽  
Vol 7 (17) ◽  
pp. 2838-2843 ◽  
Author(s):  
Alexey Vladimirovich Lychagin ◽  
Vadim Gennadievich Cherepanov ◽  
Pavel Igorevich Petrov ◽  
Ivan Antonovich Vyazankin ◽  
Galina Eduardovna Brkich
Keyword(s):  
Knee Joint ◽  
Hip Joint ◽  
Computer Tomography ◽  
Axial Load ◽  
Lower Limbs ◽  
Congenital Deformity ◽  
Hip Joints ◽  
Surgery Planning ◽  
X Ray ◽  
Total Knee

BACKGROUND: Knee and hip joints endoprosthetics are the main surgical method of arthrosis treatment. The epidemiological incidence rate of the disease is growing steadily every year, affecting younger and younger people. Despite the proven tactics of joint endoprosthetics, an important issue is quality planning of surgery. AIM: The aim of this research is to develop a device and a method that would contribute to solving the existing challenges of pre-surgery planning of hip endoprosthetics in patients with related pathologies, which have caused compensatory deformation, and making long vertebrarium-pelvis-lower limbs scout images with the patient lying on his back with an axial load in a computer tomography. METHODS: Analog X-ray photographs of the pelvis made on film, digital DICOM images, and special planning programs are used for planning. However, according to numerous studies, the disease of the hip joint is not an independently isolated pathology. In most cases, this pathology is accompanied by changes in the lumbar spine. Often, patients prepared for endoprosthetics have a congenital deformity of tarsus or hip segment, which, during the knee, joint endoprosthetics surgery causes difficulties with the installation of an intramedullary guide. RESULTS: The results after total knee arthroplasty according to the method modified at the Department showed a reduction of the WOMAC index slightly more than twice down to 37.26 ± 7.92. The number of revision surgeries after endoprosthetics decreased from 5 (5.7%) to 1 (1.1%) for the hip joint, and from 7 (4.3%) to 2 (1.3%) for the knee joint, respectively. CONCLUSION: To form a proper guide entry point, it is necessary to assess the segment at the stage of surgery planning and examination of patients, which can be done using the proposed method. To remove the complications during the pre-surgery planning of hip joint endoprosthetics in patients with related pathologies, a device and methods have been developed for obtaining long topograms of the vertebrarium-pelvis-lower limbs complex with the patient lying on his back with the axial load in computer tomography.

scholarly journals Parameters of the In-Run Position of Juniors’ Body at the Beginning of Take-Off

2017 ◽  
Vol 17 (4) ◽  
pp. 177-183
Author(s):  
Andriy Kazmiruk ◽  
Volodymyr Banakh ◽  
Andriy Vlasov ◽  
Anatolij Lopatiev ◽  
Oleksandr Tovstonoh ◽  
...  
Keyword(s):  
Knee Joint ◽  
Ankle Joint ◽  
Inclination Angle ◽  
Hip Joint ◽  
Body Position ◽  
The Body ◽  
Straight Line Passing ◽  
Jump Length ◽  
Line Passing ◽  
Body Joints

The objective is to determine the differences in the technique of the in-run position execution at the beginning of take-off by junior ski-jumpers of different qualification (sports training).Materials and methods. The participants in the study were 22 junior ski-jumpers aged 14-16 (a group of junior ski-jumpers) performing during the Ukrainian Ski-Jumping Championship (October 9, 2010, Vorokhta, Ukraine). The correlation analysis thereof established the relations between the jump length and the angular parameters: in the ankle joint, knee joint, hip joint, and pelvis joint, which condition the positional relationship of the body joints and the position of the ski-jumper at the beginningof take-off. Results. The study established the correlation relations between the jump length and the angular parameters that condition the horizontal positioning of the body. The correlation coefficient for the jump length at the inclination angle of the segment of the straigt line passing through the axes of the ankle and shoulder joints to the direction of the skier’s movement is r=–0.563 (p = 0.006), and that at the inclination angle of the segment of the straight line passing through the general center of body weight and the axis of the ankle joint to the direction of the skier’s movement is r= –0.355 (p = 0.105).Conclusions. A position of lowly groupping at the beginning of the take-off allows to improve the sporting result. The study established the correlation between the jump length and the angle, particularly in the ankle joint, to be r= –0.2244 (p = 0.274), in the knee joint — r= –0.165 (p = 0.464), in the hip joint —r= –0.127 (p = 0.574). It determined the statistically reliable differences in the parameters of the body position at the beginning of the take-off on the jump ramp (p <0.05). 

scholarly journals The contributions of ankle, knee and hip joint work to individual leg work change during uphill and downhill walking over a range of speeds

2018 ◽  
Vol 5 (8) ◽  
pp. 180550 ◽  
Author(s):  
Jana R. Montgomery ◽  
Alena M. Grabowski
Keyword(s):  
Knee Joint ◽  
Ankle Joint ◽  
Hip Joint ◽  
Sagittal Plane ◽  
Assistive Devices ◽  
Joint Work ◽  
Negative Work ◽  
Plane Joint ◽  
All Speeds ◽  
Positive Work

The muscles surrounding the ankle, knee and hip joints provide 42, 16 and 42%, respectively, of the total leg positive power required to walk on level ground at various speeds. However, each joint's contribution to leg work when walking up/downhill at a range of speeds is not known. Determining each biological joint's contribution to leg work over a range of speeds and slopes can inform the design of biomimetic assistive devices (i.e. prostheses). Twenty healthy adults walked 1.00, 1.25 and 1.50 m s −1 on 0°, ±3°, ±6° and ±9° while we collected kinematic and kinetic data. We calculated sagittal plane joint work and individual leg work over the entire stance phase. The ratio of ankle joint to total individual leg positive work (summed ankle, knee and hip joint work) did not change (0.42) with speed or slope, but the ratio of ankle joint to individual leg negative work was 0.38 at −9°, 0.42 at 0° and 0.27 at +9° across all speeds. The ratio of ankle joint to total individual leg negative work was 0.41 at 1.00 m s −1 and 0.32 at 1.50 m s −1 across all slopes. The ratio of knee joint to total individual positive leg work (0.22) did not change with speed or slope. The ratio of knee joint to total individual leg negative work was 0.39 at 1.00 m s −1 and 0.45 at 1.50 m s −1 across all slopes. The ratio of hip joint to total individual leg positive work did not change with speed but was 0.34 at −9°, 0.33 at 0° and 0.37 at +9° across all speeds. The ratio of hip joint to total individual leg negative work was 0.21 at 1.00 m s −1 , and 0.24 at 1.50 m s −1 across all slopes and 0.17 at −9°, 0.19 at 0° and 0.29 at +9° across all speeds. The ankle significantly contributes to walking on slopes and this contribution changes during sloped compared with level-ground walking, thus assistive devices that provide biomimetic ankle function must adapt to accommodate walking at different speeds and slopes; whereas assistive biomimetic devices for the knee only need to adapt at different speeds.

scholarly journals New plastic joints for plastic orthoses

1982 ◽  
Vol 6 (1) ◽  
pp. 21-23 ◽  
Author(s):  
H. Watanabe ◽  
T. Kutsuna ◽  
H. Morinaga ◽  
T. Okabe
Keyword(s):  
Knee Joint ◽  
Ankle Joint ◽  
Hip Joint ◽  
Elbow Joint ◽  
The Other ◽  
Joint Material

Plastic joints for orthoses have more advantages than metal joints. They are lightweight, noiseless comfortable to use, rust proof, corrosion free, and radiolucent. Two types of plastic joints were developed by the authors, one for the ankle joint and the other for the knee joint, elbow joint or hip joint. Polypropylene was chosen as the joint material because of its appropriate flexibility and toughness.

THE USE OF MOTION ANALYSIS SYSTEM AND ORTHOSIS IN PATIENTS WITH NEURO-MUSCULOSKELETAL DISORDERS

2014 ◽  
Vol 14 (02) ◽  
pp. 1450028 ◽  
Author(s):  
MOHAMMAD TAGHI KARIMI ◽  
JAVID MOSTAMAND ◽  
FRANCIS FATOYE
Keyword(s):  
Knee Joint ◽  
Musculoskeletal Disorders ◽  
Motion Analysis ◽  
Hip Joint ◽  
Motion Analysis System ◽  
Flat Foot ◽  
Gait Parameters ◽  
Significant Difference ◽  
Joint Monitoring ◽  
Analysis System

Background: Neuro-musculoskeletal disorders are a major source of physical disability involving more than one joint. Monitoring all joints during walking is achieved by using motion analysis system. There is limited evidence to show the suitability of motion analysis system to monitor neuro-musculoskeletal disorders. This research investigated the feasibility of this system to represent in patients with neuro-musculoskeletal disorders during walking. Method: Five groups of normal subjects with: knee osteoarthritis; avascular necrosis of hip joint; spinal cord injury and flat foot were recruited into this study. Kinetic and kinematic parameters were obtained by the use of motion analysis (Qualysis with seven cameras) and a Kistler force platform. The differences between gait parameters of normal and subjects with these disorders were examined using the independent t-tests. Paired t-test analysis was also used to determine the difference between walking with and without orthosis. Significant value was set at p ≤ 0.05. Results: There was a significant difference between the moment applied on the knee joint, the integral area between center of pressure (COP) and center of knee joint (COJ) graphs of normal and osteoarthritis (OA) subjects (p < 0.05). The area between COP and COJ of the ankle joint significantly differed between normal and flat foot subjects (p < 0.05). However, the force transmitted through the hip joint in subjects with Perthes did not differ significantly while walking with and without orthosis. In paraplegic subjects, the force applied on the limb and the mean values of gait parameters varied while walking with different orthoses which showed the feasibility of the system to monitor the performance of subjects with SCI disorder. Conclusion: The findings of the present study imply that the use of motion analysis is feasibility for assessing and monitoring neuro-musculoskeletal disorders. However, different parameters should be selected for various neuro-musculoskeletal disorders.

scholarly journals Design and Experimental Research of Knee Joint Prosthesis Based on Gait Acquisition Technology

Biomimetics ◽  
2021 ◽  
Vol 6 (2) ◽  
pp. 28
Author(s):  
Yonghong Zhang ◽  
Erliang Wang ◽  
Miao Wang ◽  
Sizhe Liu ◽  
Wenjie Ge
Keyword(s):  
Knee Joint ◽  
Lower Limbs ◽  
Movement Trajectory ◽  
Human Knee ◽  
Motion Data ◽  
Human Knee Joint ◽  
Lower Limb Prosthesis ◽  
Knee Joint Motion ◽  
Normal Human ◽  
Instantaneous Center

Whether the lower limb prosthesis can better meet the needs of amputees, the biomimetic performance of the knee joint is particularly important. In this paper, Nokov(metric) optical 3D motion capture system was used to collect motion data of normal human lower limbs, and the motion instantaneous center of multi-gait knee joint was obtained. Taking the error of knee joint motion instantaneous center line as the objective function, a set of six-bar mechanism prosthetic knee joint was designed based on a genetic algorithm. The experimental results show that the movement trajectory of the instantaneous center of the knee joint is basically similar to that of the human knee joint, so it can help amputees complete a variety of gaits and has good biomimetic performance. Gait acquisition technology can provide important data for prosthetic designers and it will be widely used in prosthetic design and other fields.

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