scholarly journals Effectiveness of quadriceps muscle strengthening on knee joint stability and activities of daily living in patients with knee joint osteoarthritis

2020 ◽  
Vol 4 (1) ◽  
pp. 31
Author(s):  
C. V. Kumarahewa ◽  
H. A. Amaratunga
Keyword(s):  
Knee Joint ◽  
Activities Of Daily Living ◽  
Daily Living ◽  
Quadriceps Muscle ◽  
Joint Stability ◽  
Muscle Strengthening

Simulated Deep Flexion With Muscle Loading: Whole Leg Versus Knee Kinematics

2008 ◽  
Author(s):  
Amber N. Reeve ◽  
Chadd W. Clary ◽  
Amit M. Mane ◽  
Lorin P. Maletsky
Keyword(s):  
Knee Joint ◽  
Activities Of Daily Living ◽  
Knee Flexion ◽  
Daily Living ◽  
Knee Kinematics ◽  
Limited Range ◽  
Deep Flexion ◽  
Limited Range Of Motion ◽  
Muscle Loading

Many activities of daily living during work, exercise, religious worship, and hobbies require deep knee flexion. Activities such as rising from a low chair or getting into or out of a bath require between 100° and 160° of knee flexion [1]. Other activities such as kneeling or squatting to pick an item off the ground can be difficult with a limited range of motion. Beside deep knee flexion being important for daily living activities, it is essential in non-Western cultures that commonly sit in deep knee-bending positions. In vitro studies looking at knee function often focus solely on the knee joint, ignoring the effect of the muscle, ligament, and tendon constraints of the ankle, and simplifying or neglecting muscle loads. The effects of these assumptions on kinematics are unknown. The purpose of this study was to compare a squatting activity for: 1) whole leg versus knee specimens, and 2) different combinations of quadriceps and hamstrings loading.

scholarly journals Wear Testing of Moderate Activities of Daily Living Using In Vivo Measured Knee Joint Loading

PLoS ONE ◽  
2015 ◽  
Vol 10 (3) ◽  
pp. e0123155 ◽  
Author(s):  
Jörn Reinders ◽  
Robert Sonntag ◽  
Leo Vot ◽  
Christian Gibney ◽  
Moritz Nowack ◽  
...  
Keyword(s):  
Knee Joint ◽  
Activities Of Daily Living ◽  
Daily Living ◽  
Wear Testing ◽  
Joint Loading ◽  
Knee Joint Loading

scholarly journals Effects of Mild and Severe Knee Joint Pain on Various Activities of Daily Living in the Female Elderly

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Hiroki Sugiura ◽  
Shinichi Demura
Keyword(s):  
Standard Deviation ◽  
Knee Joint ◽  
Activities Of Daily Living ◽  
Knee Pain ◽  
Joint Pain ◽  
Daily Living ◽  
The Elderly

This study aimed to examine the differences in the ability to perform various activities of daily living (ADLs) among groups with various knee problems. The participants consisted of 328 elderly females (age 60–94; mean age 76.1 years; standard deviation 6.2). The subjects were classified into three groups: those without knee pain, those with mild knee pain, and those with severe knee pain. ADLs with markedly higher (>97%) and lower (<38%) achievement rates in the group without knee pain were not significantly different among the three groups. Achievement rates of 40%–97% for ADLs were significantly lower in the group with severe knee pain than in the group without knee pain. In addition, the groups with mild and severe knee pain demonstrated significantly lower achievement rates of ascending and descending stairs and sitting up than the group without knee pain. In conclusion, regardless of the presence of absence of mild or severe knee pain, some ADLs are difficult to achieve, while others are easy. The elderly with severe knee pain find it difficult to achieve many ADLs. In addition, it is difficult for the elderly with mild and severe knee pain to ascend and descend stairs and to sit up.

A New Concept For Isokinetic Hamstring: Quadriceps Muscle Strength Ratio

1998 ◽  
Vol 26 (2) ◽  
pp. 231-237 ◽  
Author(s):  
Per Aagaard ◽  
Erik B. Simonsen ◽  
S. Peter Magnusson ◽  
Benny Larsson ◽  
Poul Dyhre-Poulsen
Keyword(s):  
Muscle Strength ◽  
Angular Velocity ◽  
Knee Joint ◽  
Knee Extensor ◽  
Quadriceps Muscle ◽  
Knee Extension ◽  
Quadriceps Strength ◽  
Strength Ratio ◽  
Joint Stability ◽  
Hamstring Muscles

Conventionally, the hamstring:quadriceps strength ratio is calculated by dividing the maximal knee flexor (hamstring) moment by the maximal knee extensor (quadriceps) moment measured at identical angular velocity and contraction mode. The agonist-antagonist strength relationship for knee extension and flexion may, however, be better described by the more functional ratios of eccentric hamstring to concentric quadriceps moments (extension), and concentric hamstring to eccentric quadriceps moments (flexion). We compared functional and conventional isokinetic hamstring: quadriceps strength ratios and examined their relation to knee joint angle and joint angular velocity. Peak and angle-specific (50°, 40°, and 30° of knee flexion) moments were determined during maximal concentric and eccentric muscle contractions (10° to 90° of motion; 30 and 240 deg/sec). Across movement speeds and contraction modes the functional ratios for different moments varied between 0.3 and 1.0 (peak and 50°), 0.4 and 1.1 (40°), and 0.4 and 1.4 (30°). In contrast, conventional hamstring:quadriceps ratios were 0.5 to 0.6 based on peak and 50° moments, 0.6 to 0.7 based on 40° moment, and 0.6 to 0.8 based on 30° moment. The functional hamstring:quadriceps ratio for fast knee extension yielded a 1:1 relationship, which increased with extended knee joint position, indicating a significant capacity of the hamstring muscles to provide dynamic knee joint stability in these conditions. The evaluation of knee joint function by use of isokinetic dynamometry should comprise data on functional and conventional hamstring:quadriceps ratios as well as data on absolute muscle strength.

Knee Joint Loading Patterns During Activities of Daily Living in TKR Patients

2003 ◽  
Author(s):  
Lisa C. Benson ◽  
Martine LeBerge ◽  
Thomas B. Pace
Keyword(s):  
Knee Joint ◽  
Activities Of Daily Living ◽  
Daily Living ◽  
Inertial Sensors ◽  
Control Group ◽  
Knee Simulator ◽  
Sit To Stand ◽  
Axial Forces ◽  
Loading Patterns ◽  
Total Knee

The kinetics and kinematics of the knee joint during a variety of activities of daily living were studied in a group of total knee replacement (TKR) patients. The parameters examined were those needed to program a force-controlled knee simulator (axial and anterior-posterior (AP) forces, internal-external (IE) moment, and flexion angle). These parameters were calculated for walking, fast walking, stand-to-sit, sit-to-stand, bending, stair ascent and stair descent using body-fixed inertial sensors, a force platform, and estimates of muscles forces. Peak values for loading patterns were not significantly different from those for an age-matched control group. Axial forces were lower in comparison to published results for normal and TKR populations, due to slower cadences and conservative estimates of muscle forces. Peak posterior forces and IE moments were higher than published results. These patterns were combined to form a spectrum loading pattern, with the activities occurring in approximately the same ratios of relative frequency as reported in the literature. The spectrum pattern can be used to program a force-controlled knee simulator in order to apply more relevant loading patterns to knee implants.

scholarly journals New opportunities to correct equvinus foot deformity in orthopedic-traumatological practice

2018 ◽  
Vol 35 (5) ◽  
pp. 19-23
Author(s):  
N. B. Schekolova ◽  
A. M. Zinovyev ◽  
V. G. Kozyukov ◽  
A. E. Tokarev ◽  
Ya. V. Nenakhova
Keyword(s):  
Knee Joint ◽  
Pain Syndrome ◽  
Quadriceps Muscle ◽  
Individual Choice ◽  
Foot Deformity ◽  
Joint Stability ◽  
Locomotor System ◽  
New Variant ◽  
Model Efficiency ◽  
Posterior Position

Aim. To prove the efficiency of using a new variant of leg tutor for correction of locomotor system pathology in treatment of equvinus foot deformity. Materials and methods. A mean age of 23 patients with hemiparesis and equvinus foot deformity was 42.5 years. Tonus and strength of legs was assessed. Angulometric and stabilometric studies were realized. Results. The developed model of leg tutor was used. To eliminate equvinus foot deformity, hyperextension of the knee joint was gradually eliminated using individual choice of the heel form and height, thus strengthening a quadriceps muscle of the thigh. The knee joint stability increased, the intensity of pain syndrome reduced. Arthropathies and deformities of the knee joint were prevented. Innovation of the developed model is the following: a soft glue-based responsive side of textile band “Contact” “Velcro” was stably fixed to the outside surface of posterior third of the plantar part of tutor sleeve. To the responsive side of a textile band, there were fixed removable heel pads (heels from microporous rubber of different height (from 5 to 25 mm) with a responsive hard (with hooks) part of textile band “Contact” “Velcro”). Tutor provided the ability to move and guaranteed stable holding of the extremity segments in the posterior position. There was observed a positive dynamics of changes in the muscular tonus of paralyzed leg. Conclusions. The developed tutor model can be used in orthopedic-traumatological practice to correct equvinus foot deformity; the model efficiency is confirmed by clinical and stabilometric parameters.

Loading of the knee joint during activities of daily living measured in vivo in five subjects

2010 ◽  
Vol 43 (11) ◽  
pp. 2164-2173 ◽  
Author(s):  
I. Kutzner ◽  
B. Heinlein ◽  
F. Graichen ◽  
A. Bender ◽  
A. Rohlmann ◽  
...  
Keyword(s):  
Knee Joint ◽  
Activities Of Daily Living ◽  
Daily Living
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