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.

Deep Knee Activities: In Vitro Kinematic Measurements to Compare With In Vivo Studies

2007 ◽  
Author(s):  
Amber N. Reeve ◽  
Chadd W. Clary ◽  
Amit M. Mane ◽  
Kevin A. Dodd ◽  
Lorin P. Maletksy
Keyword(s):  
Activities Of Daily Living ◽  
Range Of Motion ◽  
Knee Flexion ◽  
Daily Living ◽  
Limited Range ◽  
In Vivo Studies ◽  
Daily Living Activities ◽  
Limited Range Of Motion

Deep knee flexion is required for many activities of daily living during work, exercise, religious worship, and hobbies. Walker et al. [1] found that activities such as rising from a low chair or getting into or out of bath require between 100° and 160° of knee flexion. 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.

Knee Kinematics During an In Vitro Simulated Deep Flexion Squat

2007 ◽  
Author(s):  
Chadd W. Clary ◽  
Amit M. Mane ◽  
Amber N. Reeve ◽  
Kevin A. Dodd ◽  
Lorin P. Maletsky
Keyword(s):  
Knee Flexion ◽  
Weight Bearing ◽  
Knee Kinematics ◽  
Knee Prostheses ◽  
Deep Flexion ◽  
Total Knee ◽  
Design Characteristics ◽  
Insight Into

Understanding the behavior of the natural knee in deep flexion can offer insight into the necessary design characteristics of a total knee implant. Andriacchi et al. [1] measured the in vivo characteristics of knee motion down to ∼150° knee flexion during a weight bearing squat. Likewise, Li et al. [2] investigated deep knee flexion in vitro using robotic technology during passive knee flexion. Both of these studies offer insight into the behavior of the knee in deep knee flexion; however, they have some limitations with regards to assessing physiological activities in a controlled manner. The purpose of this study was to measure the kinematics of the knee during a simulated in vitro deep knee squat so that in the future a dynamic, load-bearing, simulated deep knee squat could be used as a tool in the design of total knee prostheses.

Biomechanical Effects of Kneeling With Posterior Cruciate Retaining and Posterior Cruciate Substituting Total Knee Arthroplasty

2009 ◽  
Author(s):  
Jason K. Hofer ◽  
Ryuichi Gejo ◽  
Michelle H. McGarry ◽  
Thay Q. Lee
Keyword(s):  
Total Knee Arthroplasty ◽  
Activities Of Daily Living ◽  
Knee Arthroplasty ◽  
Knee Flexion ◽  
Daily Living ◽  
Middle Eastern ◽  
Large Role ◽  
Asian Countries ◽  
Cruciate Retaining ◽  
Total Knee

Kneeling is an activity that is important in certain occupations and recreational activities. Culturally, kneeling plays a large role in Middle Eastern and Asian countries, where activities of daily living require the ability to kneel and achieve deep knee flexion.

scholarly journals Physical Therapy Following Saucerisation of Discoid Meniscus – a Case Study

2022 ◽  
Vol 25 (3) ◽  
Author(s):  
Kinga Żmijewska ◽  
Alicja Fąfara ◽  
Jarosław Feluś ◽  
Artur Gądek
Keyword(s):  
Physical Therapy ◽  
Knee Joint ◽  
Lower Extremities ◽  
Limited Range ◽  
Pain Scale ◽  
Type I ◽  
Discoid Meniscus ◽  
Thigh Circumference ◽  
Limited Range Of Motion ◽  
Left Limb

Introduction: Discoid meniscus is a structure with altered shape, which causes it to frequently undergo injuries and lesions. Pain, limping, limited range of motion of the knee joint and swelling are characteristic signs of this pathology. Therapeutic possibilities include meniscectomy and saucerisation. Research objective: The study aim was assessment of the therapeutic effectiveness in a patient after saucerisation of discoid meniscus. Material and methods: A 12-year-old female patient after saucerisation of lower left limb lateral discoid meniscus (type I) was subjected to 32-week physical therapy treatment. Testing included determining the range of knee joint flexion and extension movements, as well as measuring the circumference of the lower extremities 15 cm above the patella. The Kujala Score (Anterior Knee Pain Scale) and Ikeuchi grading system were employed during the 1st, 3rd, 8th, 21st and 32nd weeks postoperatively. Results: In the final stage of physical therapy, complete range of knee joint motion was achieved, the Kujala Scale score totalled 98 points and the thigh circumference of the operated limb increased by 4 cm. The circumferences of the lower extremities differed by 2 cm in the final phase of physical therapy. Conclusions: The employed postoperative protocol effectively influenced the functional state of the patient.

PRELIMINARY DESIGN OF A KNEE EXTERNAL FIXATOR BASED ON PLANAR GEOMETRIC SYNTHESIS

2006 ◽  
Vol 30 (4) ◽  
pp. 567-579 ◽  
Author(s):  
G. Fragomeni ◽  
D. Mundo ◽  
G. Gatti ◽  
D. Moschetta ◽  
G.A. Danieli
Keyword(s):  
Healthy Volunteer ◽  
External Fixator ◽  
Knee Kinematics ◽  
Limited Range ◽  
Body Motion ◽  
Preliminary Design ◽  
Limited Range Of Motion ◽  
Injured Area ◽  
Post Traumatic ◽  
Actual Method

The paper presents the validation of a methodology for the optimal synthesis of a planar mechanical system able to reproduce knee kinematics in a limited range of motion. Such a mechanism could be effectively used in the design and placement of a moving external fixator for the knee joint articulation in either post-traumatic and pathological treatment or rehabilitation. The purpose is to help patient’s recovery through a limited and occasional movement of the articulation without loading the injured area. In order to validate the actual method, knee kinematics is estimated by means of plane radiographs of the articular joint of an healthy volunteer at different flexion angles. Each of the lateral radiographs shows the relative tibia-femur motion in different configurations. The whole movement is reconstructed by interpolation, assuming a relative gliding law. Geometric synthesis, based on Burmester’s theory, is thus used to identify a set of compatible four-bar-linkages (f.b.l.), which reproduce the estimated rigid body motion.

scholarly journals Comparison of Marker-Based and Stereo Radiography Knee Kinematics in Activities of Daily Living

2018 ◽  
Vol 46 (11) ◽  
pp. 1806-1815 ◽  
Author(s):  
Donald R. Hume ◽  
Vasiliki Kefala ◽  
Michael D. Harris ◽  
Kevin B. Shelburne
Keyword(s):  
Activities Of Daily Living ◽  
Daily Living ◽  
Knee Kinematics

Comparison of Strain-Gage and Fiber-Optic Goniometry for Measuring Knee Kinematics During Activities of Daily Living and Exercise

2012 ◽  
Vol 134 (8) ◽  
Author(s):  
Abeer A. Mohamed ◽  
Jennifer Baba ◽  
James Beyea ◽  
John Landry ◽  
Andrew Sexton ◽  
...  
Keyword(s):  
Knee Flexion ◽  
Daily Living ◽  
Motion Tracking ◽  
Tracking System ◽  
Knee Kinematics ◽  
Sensor Technology ◽  
Indirect Measures ◽  
Flexion Extension ◽  
Motion Tracking System ◽  
Chair Rise

There is increasing interest in wearable sensor technology as a tool for rehabilitation applications in community or home environments. Recent studies have focused on evaluating inertial based sensing (accelerometers, gyroscopes, etc.) that provide only indirect measures of joint motion. Measurement of joint kinematics using flexible goniometry is more direct, and still popular in laboratory environments, but has received little attention as a potential tool for wearable systems. The aim of this study was to compare two goniometric devices: a traditional strain-gauge flexible goniometer, and a fiberoptic flexible goniometer, for measuring dynamic knee flexion/extension angles during activity of daily living: chair rise, and gait; and exercise: deep knee bends, against joint angles computed from a “gold standard” Vicon motion tracking system. Six young adults were recruited to perform the above activities in the lab while wearing a goniometer on each knee, and reflective markers for motion tracking. Kinematic data were collected simultaneously from the goniometers (one on each leg) and the motion tracking system (both legs). The results indicate that both goniometers were within 2–5 degrees of the Vicon angles for gait and chair rise. For some deep knee bend trials, disagreement with Vicon angles exceeded ten degrees for both devices. We conclude that both goniometers can record ADL knee movement faithfully and accurately, but should be carefully considered when high (>120 deg) knee flexion angles are required.

Assessment Of Normal Knee Kinematics During Activities Of Daily Living In Older Adults

2015 ◽  
Vol 47 ◽  
pp. 599
Author(s):  
Vasiliki Kefala ◽  
Adam J. Cyr ◽  
Donald R. Hume ◽  
Kevin B. Shelburne
Keyword(s):  
Older Adults ◽  
Activities Of Daily Living ◽  
Daily Living ◽  
Knee Kinematics ◽  
Normal Knee
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