scholarly journals Cumulative loading of the medial compartment of the knee joint during Tai Chi gait in patients with knee osteoarthritis

2015 ◽  
Vol 23 ◽  
pp. A106
Author(s):  
B. Decoux ◽  
J.E. Kovaleski ◽  
W. Liu
Keyword(s):  
Knee Joint ◽  
Knee Osteoarthritis ◽  
Tai Chi ◽  
Medial Compartment

scholarly journals Radiographic vs. MRI vs. arthroscopic assessment and grading of knee osteoarthritis - are we using appropriate imaging?

2022 ◽  
Vol 9 (1) ◽  
Author(s):  
Samuel Newman ◽  
Huzefah Ahmed ◽  
Nader Rehmatullah
Keyword(s):  
Knee Joint ◽  
Knee Osteoarthritis ◽  
Imaging Techniques ◽  
Lateral Compartment ◽  
Medial Compartment ◽  
Actual Condition ◽  
Tertiary Centre ◽  
Arthroscopic Findings ◽  
Mri Scans ◽  
Outerbridge Grade

Abstract Purpose Radiographs and MRI scans are commonly used imaging techniques in the assessment of knee osteoarthritis. However, it currently remains uncertain how good a representation of the actual condition of the knee joint these investigations provide. By comparing them against arthroscopic findings the aim of our study was to conclude how accurate these imaging techniques are at grading knee osteoarthritis. Methods This was a retrospective study looking at knee arthroscopies performed at a tertiary centre over a 5 year period. The Outerbridge grade given at arthroscopy was correlated with pre-operative radiograph and MRI scores, so as to assess the reliability of these imaging techniques at predicting the actual severity of knee osteoarthritis seen. Results Kellgren-Lawrence (KL) grading of radiographs was moderately correlated with Outerbridge grades from arthroscopy for the medial compartment of the knee (Spearman’s rho (SR) 0.483, p < 0.001), with a milder correlation in the lateral compartment (SR 0.218, p = 0.003). MRI reporting of knee osteoarthritis was moderately correlated with Outerbridge grades in the medial compartment (SR 0.451, p < 0.001), mildly correlated for both the lateral (SR 0.299, p < 0.001) and patellofemoral joint compartments (SR 0.142, p = 0.054). KL and MRI grading was moderately correlated for the medial compartment (SR 0.475, p < 0.001) and mildly correlated for the lateral compartment (SR 0.277, p < 0.001). Conclusion The ability of radiographs to represent the actual condition of knee osteoarthritis is underestimated. KL grading especially best represents the disease seen in the medial compartment of the knee joint, with a moderate correlation to Outerbridge scores given on arthroscopic assessment. We suggest that whilst MRI is a useful tool in the investigation of knee symptoms, it is often unnecessarily used in patients with OA, when in fact, radiographs alone would be sufficient. Evidence level III

scholarly journals Relationship between foot function and medial knee joint loading in people with medial compartment knee osteoarthritis

2013 ◽  
Vol 6 (1) ◽  
Author(s):  
Pazit Levinger ◽  
Hylton B Menz ◽  
Adam D Morrow ◽  
John R Bartlett ◽  
Julian A Feller ◽  
...  
Keyword(s):  
Knee Joint ◽  
Knee Osteoarthritis ◽  
Medial Compartment ◽  
Joint Loading ◽  
Medial Knee ◽  
Foot Function ◽  
Knee Joint Loading

scholarly journals A Simulation Case Study of Knee Joint Compressive Stress during the Stance Phase in Severe Knee Osteoarthritis Using Finite Element Method

Medicina ◽  
2021 ◽  
Vol 57 (6) ◽  
pp. 550
Author(s):  
Takashi Fukaya ◽  
Hirotaka Mutsuzaki ◽  
Toshiyuki Aoyama ◽  
Kunihiro Watanabe ◽  
Koichi Mori
Keyword(s):  
Computed Tomography ◽  
Finite Element Method ◽  
Finite Element ◽  
Knee Joint ◽  
Knee Osteoarthritis ◽  
Compressive Stress ◽  
Mechanical Load ◽  
Medial Compartment ◽  
Medial Knee ◽  
Medial Knee Osteoarthritis

Background and Objectives: Medial knee osteoarthritis is known to increase the mechanical load on the medial compartment of the knee joint during walking; however, it is not visually understood how much the mechanical load increases nor where in the medial compartment of the knee joint that load is focused. Therefore, we conducted a simulation study to determine the location and amount of the mechanical load in the medial compartment of the knee joint during the stance phase. Materials and Methods: Subject was a patient with right medial knee osteoarthritis. Computed tomography imaging and gait analysis were performed on subject. The CT image of the right knee was calculated using finite element analysis software. Since this software can set the flexion angle arbitrarily while maintaining the nonuniform material properties of the bone region, the model is constructed by matching the knee joint extension image obtained by CT to the loading response phase of gait analysis. The data of muscle exertion tension and vertical ground reaction force were inserted into the knee joint model created from the computed tomography-based finite element method, and the knee joint compressive stress was calculated. Results: With regard to compressive stress, the tibia showed high stress at 4.10 to 5.36 N/mm2. The femur showed high stress at 4.00 to 6.48 N/mm2. The joint compressive stress on the medial compartment of the knee joint was found to concentrate on the edge of the medial tibial condyle in the medial knee osteoarthritis subject. Conclusions: The measurement method of knee joint compressive stress by computed tomography-based finite element method can visually be a reliable method of measuring joint compressive stress in the medial knee osteoarthritis. This reflects the clinical findings because concentration of stress on the medial knee joint was observed at the medial osteophyte.

scholarly journals Lateral trunk lean explains variation in dynamic knee joint load in patients with medial compartment knee osteoarthritis

2008 ◽  
Vol 16 (5) ◽  
pp. 591-599 ◽  
Author(s):  
M.A. Hunt ◽  
T.B. Birmingham ◽  
D. Bryant ◽  
I. Jones ◽  
J.R. Giffin ◽  
...  
Keyword(s):  
Knee Joint ◽  
Knee Osteoarthritis ◽  
Medial Compartment ◽  
Knee Joint Load ◽  
Joint Load

scholarly journals Changes in the total knee joint moment in patients with medial compartment knee osteoarthritis over 5 years

2018 ◽  
Vol 36 (9) ◽  
pp. 2373-2379 ◽  
Author(s):  
Jessica L. Asay ◽  
Jennifer C. Erhart-Hledik ◽  
Thomas P. Andriacchi
Keyword(s):  
Knee Joint ◽  
Knee Osteoarthritis ◽  
Joint Moment ◽  
Medial Compartment ◽  
Total Knee ◽  
Knee Joint Moment

A Three Dimensional Finite Element Analysis of Mechanical Stresses in the Human Knee Joint: Problem of Cartilage Destruction

2017 ◽  
Vol 32 ◽  
pp. 29-39 ◽  
Author(s):  
Zahra Trad ◽  
Abdelwahed Barkaoui ◽  
Moez Chafra
Keyword(s):  
Finite Element ◽  
Body Weight ◽  
Knee Joint ◽  
Knee Osteoarthritis ◽  
Equivalent Stress ◽  
Three Dimensional ◽  
The Body ◽  
Medial Compartment ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element

Knee malalignment is considered one of the key biomechanical factors that influence the progression of knee osteoarthritis. In this context, a three-dimensional Finite Element model of the knee joint is developed and used to investigate the effect of the frontal plane femoro-tibial angle as well as the body weight load on the stress distribution in the knee cartilage and menisci. Therefore, the knee joint model is obtained through CAD software. Bones, articular cartilage and menisci are considered linear, elastic and isotropic materials. Ligaments were modelled using connectors. Consequently, contact pressures and equivalent stress (von-Mises) are calculated in Abaqus software. This model was validated using experimental and numerical results obtained by other authors. Results of this work demonstrated that; compressive stress and contact pressure on the medial compartment of the knee joint were found to be larger compared to those in the lateral compartment when the femoro-tibial angle and the body weight load increased from 0° to 12° varus and 500 N to 1250 N, respectively, suggesting that these two parameters might be risk factors for developing medial compartment knee osteoarthritis.

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