The analysis of three dimensional alignment of lower extremity before and after interlocking wedge osteotomy for osteoarthritis of the knee joint.

1984 ◽  
Vol 32 (4) ◽  
pp. 1058-1060
Author(s):  
R. Nakai ◽  
S. Zingushi ◽  
K. Ogata ◽  
S. Himeno ◽  
H. Tsumura
Keyword(s):  
Knee Joint ◽  
Lower Extremity ◽  
Three Dimensional ◽  
Wedge Osteotomy ◽  
Osteoarthritis Of The Knee ◽  
Before And After

scholarly journals The effect of low frequency pulsing electromagnetic field in treatment of patients with knee joint osteoarthritis

2012 ◽  
Vol 59 (3) ◽  
pp. 81-83 ◽  
Author(s):  
Aleksandar Pavlovic ◽  
Ljubomir Djurasic
Keyword(s):  
Electromagnetic Field ◽  
Knee Joint ◽  
Pain Sensitivity ◽  
Low Frequency ◽  
Objective Evaluation ◽  
Controlled Clinical Trial ◽  
Osteoarthritis Of The Knee ◽  
Therapeutic Exercise ◽  
Randomized Controlled ◽  
Before And After

Pulsing electromagnetic field represents effective procedure in treating of diverse diseases and pathologic conditions, especially in rheumatology, orthopaedics and traumatology. The goal of this research is the objective evaluation of the treapeutic effect of low frequency pulsing electromagnetic field (LFEMF), in comparison with the effect of the other physical procedure: interfererence currents (IFC) and the medicamentous therapy, in treating of patients with knee joint osteoarthritis. This study was made as experimental, randomized, controlled clinical trial, opened type. The examination included 60 patients (40 females and 20 males) with osteoarthritis of the knee joint. All patients were divided in three groups. The first group of 20 persons, composed of patients treated with medicamentous therapy (Diklofenak of 100 mg, 2 tablets per day). The second group consisted of 20 patients treated by LFPEMF and the third group consisted of 20 patients treated by IFC. All procedures were implemented during 10 days All of patients had also the same duration therapeutic exercise. As observing parameter was used: Lattinen test for the evaluation of the pain sensitivity, before and after therapy. For the statistical analysis of the aquired data, was used Student?s t-test. After therapy the pain was considerably reduced in each group, but this effect was the most significant in the II group of the examinees, treated by LFPEMF (p< 0.001), than the effects in other groups of patients: I group (p< 0.05) and III group (p< 0.01). According to the results of this study it can be concluded that LFPEMF is very effective therapeutic procedure in treatment of patients with knee joint osteoarthritis.

scholarly journals Coronal and axial alignment relationship in Caucasian patients with osteoarthritis of the knee

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Vicente J. León-Muñoz ◽  
Silvio Manca ◽  
Mirian López-López ◽  
Francisco Martínez-Martínez ◽  
Fernando Santonja-Medina
Keyword(s):  
Total Knee Arthroplasty ◽  
Lower Extremity ◽  
Knee Arthroplasty ◽  
External Rotation ◽  
Twist Angle ◽  
Three Dimensional ◽  
Osteoarthritis Of The Knee ◽  
Tibial Torsion ◽  
Coronal Alignment ◽  
Total Knee

AbstractIndividualized pre-operative assessment of the patterns of the lower extremity anatomy and deformities in patients undergoing total knee arthroplasty seems essential for a successful surgery. In the present study, we investigated the relationship among the coronal alignment and the rotational profile of the lower extremities in the Caucasian population with end-stage knee osteoarthritis. We conducted a prospective study of 385 knees that underwent a pre-operative three-dimensional computed tomography-based model. The lower extremity alignment was determined (mechanical tibiofemoral or hip-knee-ankle angle, supplementary angle of the femoral lateral distal angle, and proximal medial tibial angle). For each case, the femoral distal rotation (condylar twist angle), the femoral proximal version, and the tibial torsion were determined. As the coronal alignment changed from varus to valgus, the femoral external rotation increased (r = 0.217; p < 0.0005). As the coronal alignment changed from varus to valgus, the external tibial torsion increased (r = 0.248; p < 0.0005). No correlation was found between the global coronal alignment and the femoral version. The present study demonstrates a linear relationship between the coronal alignment and the rotational geometry of the distal femur. This correlation also occurs with the tibial torsion. Perhaps outcomes of total knee arthroplasty surgery might be improved by addressing these deformities as well.

scholarly journals Three-Dimensional Lower Extremity Joint Loading in a Carved Ski and Snowboard Turn: A Pilot Study

2014 ◽  
Vol 2014 ◽  
pp. 1-13 ◽  
Author(s):  
Miriam Klous ◽  
Erich Müller ◽  
Hermann Schwameder
Keyword(s):  
Knee Joint ◽  
Lower Extremity ◽  
Kinetic Data ◽  
Three Dimensional ◽  
Longitudinal Axis ◽  
Joint Loading ◽  
Inverse Dynamic ◽  
Kinematic Data ◽  
Joint Forces ◽  
Anterior Posterior

A large number of injuries to the lower extremity occur in skiing and snowboarding. Due to the difficulty of collecting 3D kinematic and kinetic data with high accuracy, a possible relationship between injury statistic and joint loading has not been studied. Therefore, the purpose of the current study was to compare ankle and knee joint loading at the steering leg between carved ski and snowboard turns. Kinetic data were collected using mobile force plates mounted under the toe and heel part of the binding on skies or snowboard (KISTLER). Kinematic data were collected with five synchronized, panning, tilting, and zooming cameras. An extended version of the Yeadon model was applied to calculate inertial properties of the segments. Ankle and knee joint forces and moments were calculated using inverse dynamic analysis. Results showed higher forces along the longitudinal axis in skiing and similar forces for skiing and snowboarding in anterior-posterior and mediolateral direction. Joint moments were consistently greater during a snowboard turn, but more fluctuations were observed in skiing. Hence, when comparing joint loading between carved ski and snowboard turns, one should differentiate between forces and moments, including the direction of forces and moments and the turn phase.

scholarly journals Biomechanical Characteristics on the Lower Extremity of Three Typical Yoga Manoeuvres

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Elizabeth Whissell ◽  
Lin Wang ◽  
Pan Li ◽  
Jing Xian Li ◽  
Zhen Wei
Keyword(s):  
Knee Joint ◽  
Lower Extremity ◽  
Hip Joint ◽  
Sagittal Plane ◽  
Knee Injuries ◽  
Three Dimensional ◽  
Knee Extensor ◽  
Frontal Plane ◽  
Significant Difference ◽  
Angular Impulse

This study was aimed at exploring the biomechanical characteristics of the lower extremity amongst three typical yoga manoeuvres. A total of thirteen experienced female yoga practitioners were recruited in the current study; they were all certified with the Yoga Alliance. A three-dimensional motion capture system with 10 cameras combined with four synchronised force plates was used to collect kinematics of the lower extremity and ground reactive force whilst the participants performed the crescent lunge pose, warrior II pose, and triangle pose. One-way repeated ANOVA was used in exploring the differences amongst the three yoga movements, and the significance was set to alpha < 0.05 . The triangle pose performed the largest range of motion (ROM) of the hip ( 90.5 ° ± 22.9 ° ), knee ( 68.8 ° ± 23.1 ° ), and ankle ( 46.4 ° ± 11.3 ° ) in the sagittal plane and the hip ( 54.8 ° ± 6.5 ° ), knee ( 42.4 ° ± 12.8 ° ), and ankle ( 4.8 ° ± 1.7 ° ) in the frontal plane amongst the three manoeuvres ( P < 0.05 ). No significant difference was found for the hip and ankle joint moment amongst the three manoeuvres ( P > 0.05 ). Knee joint travelled into 9.5° of extension and slight adduction of 1.94° whilst expressing the largest knee joint adduction moments ( 0.30 ± 0.22   Nm / kg ) in the triangle pose. The distribution of the angular impulse of the lower limb joints indicated that the hip joint contributed significantly the most in the sagittal and frontal planes of the three yoga manoeuvres ( P < 0.05 ), ranging from 51.67% to 70.56%. Results indicated that triangle pose may be superior to the other two manoeuvres, which improved hip joint ROM, strength, and dynamic stability. However, knee injuries such as osteoarthritis (OA) should be considered because of the large knee extensor angle and adductor moments.

scholarly journals Biomechanical Correlation Between Trunk and Foot Kinematics During Golf Swing Movement Before and After Fatigue

2021 ◽  
Author(s):  
Satoshi Hakukawa ◽  
Kengo Harato ◽  
Erika Morita ◽  
Kohei Nishizawa ◽  
Shu Kobayashi ◽  
...  
Keyword(s):  
Lower Extremity ◽  
Three Dimensional ◽  
Kinematic Chain ◽  
Golf Swing ◽  
Trunk Muscles ◽  
Whole Body ◽  
Muscle Training ◽  
Foot Kinematics ◽  
Before And After ◽  
Swing Movement

Abstract BackgroundKinematic chain of whole body is important during golf swing. Moreover, it was suggested that kinematics of golf swing was affected by fatigue. The purpose of the present study was to investigate the golf swing before and after fatigue of trunk muscles, and to assess the effect of the fatigue on kinematics of trunk as well as lower extremity. A total of 11 healthy adults participated in the current study. Golf swing motion in each subject was measured with a 7-iron on a grass plate using motion capture system. Three-dimensional kinematics of trunk and lower extremity on the lead side were evaluated.ResultsSagittal trunk instability was observed after fatigue. Regarding the kinematic chain, range of motion of trunk rotation (r = -0.76, p < 0.01) and knee rotation (r = 0.82, p < 0.01) were significantly correlated with the hindfoot rotation before the fatigue task. However, after the fatigue task, the hindfoot rotation was significantly correlated only with the knee rotation (r = 0.76, p <0.01). ConclusionsAs fatigue of trunk muscles will alter swing movement and kinematic chain, trunk muscle training can be one of key strategies to maintain swing performance. Trial registrationOur study was registered to UMIN (No. 000037037, date; 01/07/2019).

scholarly journals Design and analysis of a lower extremity exoskeleton with the humanoid knee joint

2020 ◽  
Vol 1633 ◽  
pp. 012052
Author(s):  
Tingting Li ◽  
Jian Li ◽  
Zhonghua Han ◽  
Jiechao Yang ◽  
Qiang Li
Keyword(s):  
Knee Joint ◽  
Lower Extremity

scholarly journals Evaluation and Validation of a Joint Stress Test to Induce Activity-Related Knee Joint Discomfort — a Prospective Case-Control Study

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Christiane Schön ◽  
Claudia Reule ◽  
Katharina Knaub ◽  
Antje Micka ◽  
Manfred Wilhelm ◽  
...  
Keyword(s):  
Knee Joint ◽  
Healthy Subjects ◽  
Stress Test ◽  
Osteoarthritis Of The Knee ◽  
Time Interval ◽  
Short Time Interval ◽  
Joint Stress ◽  
Joint Health ◽  
The Impact ◽  
Health Function

Abstract Background The assessment of improvement or maintenance of joint health in healthy subjects is a great challenge. The aim of the study was the evaluation of a joint stress test to assess joint discomfort in subjects with activity-related knee joint discomfort (ArJD). Results Forty-five subjects were recruited to perform the single-leg-step-down (SLSD) test (15 subjects per group). Subjects with ArJD of the knee (age 22–62 years) were compared to healthy subjects (age 24–59 years) with no knee joint discomfort during daily life sporting activity and to subjects with mild-to-moderate osteoarthritis of the knee joint (OA, Kellgren score 2–3, age 42–64 years). The subjects performed the SLSD test with two different protocols: (I) standardization for knee joint discomfort; (II) standardization for load on the knee joint. In addition, range of motion (ROM), reach test, acute pain at rest and after a single-leg squat and knee injury, and osteoarthritis outcome score (KOOS) were assessed. In OA and ArJD subjects, knee joint discomfort could be reproducibly induced in a short time interval of less than 10 min (200 steps). In healthy subjects, no pain was recorded. A clear differentiation between study groups was observed with the SLSD test (maximal step number) as well as KOOS questionnaire, ROM, and reach test. In addition, a moderate to good intra-class correlation was shown for the investigated outcomes. Conclusions These results suggest the SLSD test is a reliable tool for the assessment of knee joint health function in ArJD and OA subjects to study the improvements in their activities. Further, this model can be used as a stress model in intervention studies to study the impact of stress on knee joint health function.

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