scholarly journals Design and Evaluation of a New Type of Knee Orthosis to Align the Mediolateral Angle of the Knee Joint with Osteoarthritis

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Amir Esrafilian ◽  
Mohammad Taghi Karimi ◽  
Arezoo Eshraghi
Keyword(s):  
Knee Joint ◽  
Effective Treatment ◽  
Normal Subjects ◽  
Motion Analysis System ◽  
Knee Oa ◽  
Gait Parameters ◽  
Distal Migration ◽  
New Type ◽  
Analysis System ◽  
Knee Orthosis

Background. Osteoarthritis (OA) is a disease which influences the performance of the knee joint. Moreover, the force and moments applied on the joint increase in contrast to normal subjects. Various types of knee orthoses have been designed to solve the mentioned problems. However, there are other problems in terms of distal migration during walking and the alignment of the orthosis which cannot be changed following the use of brace. Therefore, the main aim of the research was to design an orthosis to solve the aforementioned problems.Method. A new type of knee orthosis was designed with a modular structure. Two patients with knee OA participated in this research project. The force applied on the foot, moment transmitted through the knee joint, and spatiotemporal gait parameters were measured by use of a motion analysis system.Results. The results of the research showed that the adduction moment applied on the knee joint decreased while subjects walked with the new knee orthosis (P-value < 0.05).Conclusion. The new design of the knee brace can be used as an effective treatment to decrease the loads applied on the knee joint and to improve the alignment whilst walking.

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.

Determination of Gait Parameters from the Wearable Motion Analysis System eSHOE

2013 ◽  
Author(s):  
H. Jagos ◽  
S. Reich ◽  
F. Rattay ◽  
L. Mehnen ◽  
K. Pils ◽  
...  
Keyword(s):  
Motion Analysis ◽  
Motion Analysis System ◽  
Gait Parameters ◽  
Analysis System

In vitro analysis of varus-valgus laxity of the knee joint: Comparison of clinical evaluation with measurements using a reference motion analysis system

IRBM ◽  
2010 ◽  
Vol 31 (5-6) ◽  
pp. 302-308 ◽  
Author(s):  
R. Testa ◽  
J. Chouteau ◽  
R. Philippot ◽  
L. Cheze ◽  
M. Fessy ◽  
...  
Keyword(s):  
Knee Joint ◽  
Motion Analysis ◽  
Clinical Evaluation ◽  
Motion Analysis System ◽  
Reference Motion ◽  
Analysis System ◽  
Vitro Analysis ◽  
In Vitro Analysis

scholarly journals Biomechanical Characteristics of the Knee Joint during Gait in Obese versus Normal Subjects

2022 ◽  
Vol 19 (2) ◽  
pp. 989
Author(s):  
Fadi Al Khatib ◽  
Afif Gouissem ◽  
Raouf Mbarki ◽  
Malek Adouni
Keyword(s):  
Knee Joint ◽  
Mechanical Load ◽  
Disease Process ◽  
Element Model ◽  
Normal Subjects ◽  
Normal Weight ◽  
Medial Gastrocnemius ◽  
Knee Oa ◽  
Lower Extremity Muscle ◽  
Muscle Groups

Knee osteoarthritis (OA) is a growing source of pain and disability. Obesity is the most important avoidable risk factor underlying knee OA. The processes by which obesity impacts osteoarthritis are of tremendous interest to osteoarthritis researchers and physicians, where the joint mechanical load is one of the pathways generally thought to cause or intensify the disease process. In the current work, we developed a hybrid framework that simultaneously incorporates a detailed finite element model of the knee joint within a musculoskeletal model to compute lower extremity muscle forces and knee joint stresses in normal-weight (N) and obese (OB) subjects during the stance phase gait. This model accounts for the synergy between the active musculature and passive structures. In comparing OB subjects and normal ones, forces significantly increased in all muscle groups at most instances of stance. Mainly, much higher activation was computed with lateral hamstrings and medial gastrocnemius. Cartilage contact average pressure was mostly supported by the medial plateau and increased by 22%, with a larger portion of the load transmitted via menisci. This medial compartment experienced larger relative movement and cartilage stresses in the normal subjects and continued to do so with a higher level in the obese subjects. Finally, the developed bioengineering frame and the examined parameters during this investigation might be useful clinically in evaluating the initiation and propagation of knee OA.

Development of a Wearable Motion Analysis System for Evaluation and Rehabilitation of Mild Traumatic Brain Injury (mTBI)

2012 ◽  
Author(s):  
Stephanie L. Carey ◽  
Kevin Hufford ◽  
Amanda Martori ◽  
Mario Simoes ◽  
Francy Sinatra ◽  
...  
Keyword(s):  
Motion Analysis ◽  
Brain Injuries ◽  
Training Session ◽  
Motion Analysis System ◽  
Laboratory Setting ◽  
Inertial Measurement ◽  
Gait Parameters ◽  
Measurement Units ◽  
Analysis System ◽  
Set Up

Mild traumatic brain injuries (mTBI) stem from a number of causes such as illnesses, strokes, accidents or battlefield traumas. These injuries can cause issues with everyday tasks, such as gait, and are linked with vestibular dysfunction [1]. Current technology that measures gait parameters often requires time consuming set up and post processing and is limited to the laboratory setting. The purpose of this study was to develop a wearable motion analysis system (WMAS) using five commercially available inertial measurement units (IMU) working in unison to record and output four gait parameters in a clinically relevant way. The WMAS has the potential to be used to 1) help diagnose mTBI or other neurocognitive disorders; 2) provide feedback to a clinician during a training session; 3) collect gait parameter data outside of the laboratory setting to determine rehabilitation progress; 4) provide quantitative outcome measures for rehabilitation efficacy.

Comparison of the efficacy of laterally wedged insoles and bespoke unloader knee orthoses in treating medial compartment knee osteoarthritis

2012 ◽  
Vol 37 (1) ◽  
pp. 50-57 ◽  
Author(s):  
Mokhtar Arazpour ◽  
Monireh Ahmadi Bani ◽  
Maryam Maleki ◽  
Farhad Tabatabai Ghomshe ◽  
Reza Vahab Kashani ◽  
...  
Keyword(s):  
Knee Osteoarthritis ◽  
Range Of Motion ◽  
Visual Analog Scale Score ◽  
Step Length ◽  
Medial Compartment ◽  
Analog Scale ◽  
Knee Oa ◽  
Gait Parameters ◽  
Quasi Experimental ◽  
Knee Orthosis

Background: Patients suffering from medial compartment knee osteoarthritis (OA) may be treated with unloader knee orthoses or laterally wedged insoles. Objectives: The aim of this study was to identify and compare the effects of them on the gait parameters and pain in these patients. Study Design: Quasi-experimental. Methods: Volunteer subjects with medial compartment knee OA ( n = 24, mean age 59.29 ± 2.23 years) were randomly assigned to two separate groups and evaluated when wearing an unloader knee orthosis or insoles incorporating a 6° lateral wedge. Testing was performed at baseline and after six weeks of each orthosis use. A visual analog scale score was used to assess pain and gait analysis was utilized to determine gait parameters. Results: Both orthoses improved all parameters compared to the baseline condition ( p = 0.000). However, no significant differences in pain ( p = 0.649), adduction moment ( p = 0.205), speed of walking ( p = 0. 056) or step length ( p = 0.687) were demonstrated between them. The knee range of motion ( p = 0.000) were significantly different between the two interventions. Conclusion: Both orthoses reduced knee pain. Maximum knee range of motion was increased by both interventions although it was 3 degrees less when wearing the knee orthosis. Clinical relevance Both orthoses reduce pain and improve gait anomalies in medial compartment knee OA. Our results suggest a laterally wedged insole can be an alternative conservative approach to unloader knee orthosis for treating symptoms of medial compartment knee OA.

Knee Angle Analysis Using a Wearable Motion Analysis System for Detection and Rehabilitation of Mild Traumatic Brain Injury

2013 ◽  
Author(s):  
Amanda L. Martori ◽  
Stephanie L. Carey ◽  
Derek J. Lura ◽  
Rajiv V. Dubey
Keyword(s):  
Motion Analysis ◽  
Brain Injuries ◽  
Wearable Sensors ◽  
Motion Analysis System ◽  
Laboratory Setting ◽  
Gait Parameters ◽  
Optical Motion ◽  
Football Field ◽  
Analysis System ◽  
Optical Motion Capture

Mild traumatic brain injuries (mTBI) are common in soldiers and athletes, and can affect many areas of a person’s daily life including gait [1]. Current methods of measuring gait parameters involve expensive optical motion capture systems, time intensive setup, wires, complicated filtering techniques, and a laboratory setting. A wearable and wireless motion analysis system would allow gait analysis to be performed outside of a laboratory setting during activities of daily living, in a clinical setting or on a football field. The purpose of this study was to develop and verify an algorithm to calculate knee flexion during slow gait, particularly during terminal stance and pre-swing phases, using wireless wearable sensors.

scholarly journals Agreement Between the Spatiotemporal Gait Parameters of Healthy Adults From the OptoGait System and a Traditional Three-Dimensional Motion Capture System

2018 ◽  
Vol 141 (1) ◽  
Author(s):  
Aoife Healy ◽  
Kimberley Linyard-Tough ◽  
Nachiappan Chockalingam
Keyword(s):  
Motion Analysis ◽  
Motion Capture ◽  
Intraclass Correlation ◽  
Three Dimensional ◽  
Healthy Adults ◽  
Systematic Bias ◽  
Motion Analysis System ◽  
Motion Capture System ◽  
Gait Parameters ◽  
Analysis System

While previous research has assessed the validity of the OptoGait system to the GAITRite walkway and an instrumented treadmill, no research to date has assessed this system against a traditional three-dimensional motion analysis system. Additionally, previous research has shown that the OptoGait system shows systematic bias when compared to other systems due to the configuration of the system's hardware. This study examined the agreement between the spatiotemporal gait parameters calculated from the OptoGait system and a three-dimensional motion capture (14 camera Vicon motion capture system and 2 AMTI force plates) in healthy adults. Additionally, a range of filter settings for the OptoGait were examined to determine if it was possible to eliminate any systematic bias between the OptoGait and the three-dimensional motion analysis system. Agreement between the systems was examined using 95% limits of agreement by Bland and Altman and the intraclass correlation coefficient. A repeated measure ANOVA was used to detect any systematic differences between the systems. Findings confirm the validity of the OptoGait system for the evaluation of spatiotemporal gait parameters in healthy adults. Furthermore, recommendations on filter settings which eliminate the systematic bias between the OptoGait and the three-dimensional motion analysis system are provided.

scholarly journals Orthosis Effects on the Gait of a Child with Infantile Tibia Vara

2015 ◽  
Vol 2015 ◽  
pp. 1-6
Author(s):  
Serap Alsancak ◽  
Senem Guner
Keyword(s):  
Knee Joint ◽  
Frontal Plane ◽  
Male Infant ◽  
Full Time ◽  
Tibia Vara ◽  
Remarkable Change ◽  
Ankle Foot Orthosis ◽  
Gait Characteristics ◽  
Gait Parameters ◽  
Analysis System

Infantile tibia vara (ITV) is an acquired form of tibial deformity associated with tibial varus and internal torsion. As there is currently insufficient data available on the effects of orthotics on gait parameters, this study aimed to document the influence of orthosis on walking. A male infant with bilateral tibia vara used orthoses for five months. Gait evaluations were performed pre- and posttreatment for both legs. The kinematic parameters were collected by using a motion analysis system. The orthotic design principle was used to correct the femur and tibia. Posttreatment gait parameters were improved compared to pretreatment parameters. After 5 months, there was remarkable change in the stance-phase degrees of frontal plane hip joint abduction and knee joint varus. We found that orthoses were an effective treatment for the infantile tibia vara gait characteristics in this patient. Full-time use of single, upright knee-ankle-foot orthosis with a drop lock knee joint and application of corrective forces at five points along the full length of the limb were effective.

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