scholarly journals External Knee Adduction Moment Characteristics of the Stance Limb of Medial Compartment Knee Osteoarthritis Patients During Gait Initiation

2010 ◽  
Vol 25 (6) ◽  
pp. 951-956
Author(s):  
Takahiro YAMASAKI ◽  
Nobuhiro KITO ◽  
Masaya ANAN ◽  
Koichi SHINKODA
Keyword(s):  
Knee Osteoarthritis ◽  
Medial Compartment ◽  
Knee Adduction Moment ◽  
Gait Initiation ◽  
External Knee Adduction Moment

Influence of Walking Speed and Severity of Knee Osteoarthritis on Medial Compartment Loading

2007 ◽  
Author(s):  
Joseph Zeni ◽  
Jill Higginson
Keyword(s):  
Knee Osteoarthritis ◽  
Walking Speed ◽  
Medial Compartment ◽  
Knee Adduction Moment ◽  
Inverse Dynamic ◽  
External Moment ◽  
Walking Velocity ◽  
Dynamic Techniques ◽  
Walking Speeds ◽  
External Knee Adduction Moment

Progression of knee osteoarthritis (OA) has been shown to occur in the presence of an increased load at the medial compartment [1]. Current gait analysis techniques allow researchers to use inverse dynamic techniques to calculate external knee adduction moments. These moments correlate to varus knee stresses and increased load in the medial knee compartment. These abnormal stresses have been hypothesized to play a role in the destruction of articular cartilage [2]. Previous authors have suggested that walking velocity will affect the adduction moment and that decreasing walking speed may reduce the maximal knee external moment during gait [3]. Based on these previous findings, we investigated various walking speeds in subjects with mild, moderate and severe OA and the effect on the external knee adduction moment.

scholarly journals External Knee Adduction Moment during Gait Initiation and Steady-State Gait in People with Knee Osteoarthritis

2010 ◽  
Vol 25 (3) ◽  
pp. 343-348 ◽  
Author(s):  
Takahiro YAMASAKI ◽  
Nobuhiro KITO ◽  
Masaya ANAN ◽  
Koichi SHINKODA
Keyword(s):  
Steady State ◽  
Knee Osteoarthritis ◽  
Knee Adduction Moment ◽  
Gait Initiation ◽  
External Knee Adduction Moment

scholarly journals Exploring the relationship between pain intensity and knee moments in participants with medial knee osteoarthritis: a cross-sectional study

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Chen. Huang ◽  
Ping-Keung. Chan ◽  
Kwong-Yuen. Chiu ◽  
Chun-Hoi. Yan ◽  
Shun-Shing. Yeung ◽  
...  
Keyword(s):  
Knee Osteoarthritis ◽  
Path Analysis ◽  
Pain Intensity ◽  
Cross Sectional Study ◽  
Knee Adduction Moment ◽  
Analysis Model ◽  
Cross Sectional ◽  
Knee Oa ◽  
The Relationship ◽  
External Knee Adduction Moment

Abstract Background High biomechanical loading is believed to be a risk factor to pain in people with knee osteoarthritis (OA), but controversial findings have been reported on the relationship between external knee adduction moment (KAM) and pain. A more comprehensive analysis considering other factor such as external knee flexion moment (KFM) could help better reveal this relationship. This study explored the relationship between external knee adduction moment and pain intensity in participants with knee osteoarthritis (OA) using an integrated path analysis model. Methods This was a cross-sectional study based on laboratory setting. Forty-seven participants with clinical and radiographic medial knee OA were analyzed for their external knee adduction moment (KAM) and knee flexion moment (KFM) during walking using a motion analysis system. Pain intensity was measured by visual analogue scale (VAS) and the pain subscale of the Knee Injury and Osteoarthritis Outcome Score. Varus/valgus alignment was captured and quantified using a bi-planar X-ray system. Using a path analysis model, the relationships between pain intensity, KAM, KFM, OA radiographic severity, knee varus angle and walking speed were examined. Results The proposed path model met the goodness-of-fit criteria. Based on this model, KAM had a negative effect on VAS pain indirectly through the mediation of KFM. The model indicated KAM and KFM were negatively related to one another; and KFM was positively related to VAS. The KAM index, defined as (KAM/ (KAM + KFM)), was negatively related to VAS. Conclusions Path analysis enabled the construction of a more integrated pathokinematic framework for people with knee OA. The KAM index which reflected the load sharing on the frontal and sagittal planes also revealed its relationship with pain. Re-distribution of mechanical loading from frontal to sagittal plane might be a strategy for pain avoidance associated with mechanical irritation.

Muscle Forces May Explain Paradoxical Knee Loads During Different Gait Patterns

2010 ◽  
Author(s):  
Jonathan P. Walter ◽  
Darryl D. D’Lima ◽  
Benjamin J. Fregly
Keyword(s):  
Disease Progression ◽  
Medial Compartment ◽  
Knee Adduction Moment ◽  
Gait Patterns ◽  
Common Assumption ◽  
Clinical Disorder ◽  
Surrogate Measure ◽  
Gait Modification ◽  
External Knee Adduction Moment

Medial compartment knee osteoarthritis is a common clinical disorder [1] in which the articular cartilage in the medial compartment progressively deteriorates. To slow disease progression without surgical intervention, researchers have proposed gait modifications to offload the medial compartment. Since knee medial contact force (MCF) cannot be measured non-invasively in vivo, researchers have identified the external knee adduction moment (KAM) as a surrogate measure that is easy to calculate [2]. A common assumption has been that reducing the peak KAM will result in a corresponding reduction in peak MCF. While the magnitude of the peak KAM has been correlated with disease severity and rate of disease progression [3,4], it is not clear that reduction of this external load via gait modification will always result in a decrease in internal MCF.

scholarly journals External knee adduction moment during Tai Chi Gait in patients with knee osteoarthritis

2014 ◽  
Vol 22 ◽  
pp. S125-S126
Author(s):  
W. Liu ◽  
J. Kovaleski ◽  
J. McCormick ◽  
R. Pearlman ◽  
A. Pearsall
Keyword(s):  
Knee Osteoarthritis ◽  
Tai Chi ◽  
Knee Adduction Moment ◽  
External Knee Adduction Moment

scholarly journals The Influence of Radiographic Severity on the Relationship between Muscle Strength and Joint Loading in Obese Knee Osteoarthritis Patients

Arthritis ◽  
2011 ◽  
Vol 2011 ◽  
pp. 1-9 ◽  
Author(s):  
Jens Aaboe ◽  
Henning Bliddal ◽  
Tine Alkjaer ◽  
Mikael Boesen ◽  
Marius Henriksen
Keyword(s):  
Muscle Strength ◽  
Knee Osteoarthritis ◽  
Knee Adduction Moment ◽  
Joint Loading ◽  
Cross Sectional ◽  
Radiographic Severity ◽  
Peak Knee ◽  
The Relationship ◽  
Knee Joint Loading ◽  
External Knee Adduction Moment

Objective. To investigate the relationship between knee muscle strength and the external knee adduction moment during walking in obese knee osteoarthritis patients and whether disease severity influences this relationship. Methods. This cross-sectional study included 136 elderly obese (BMI>30) adults with predominant medial knee osteoarthritis. Muscle strength, standing radiographic severity as measured by the Kellgren and Lawrence scale, and the peak external knee adduction moment were measured at self-selected walking speed. Results. According to radiographic severity, patients were classified as “less severe” (KL 1-2, N=73) or “severe” (KL 3-4, N=63). A significant positive association was demonstrated between the peak knee adduction moment and hamstring muscle strength in the whole cohort (P=.047). However, disease severity did not influence the relationship between muscle strength and dynamic medial knee joint loading. Severe patients had higher peak knee adduction moment and more varus malalignment (P<.001). Conclusion. Higher hamstring muscle strength relates to higher estimates of dynamic knee joint loading in the medial compartment. No such relationship existed for quadriceps muscle strength. Although cross sectional, the results suggest that hamstrings function should receive increased attention in future studies and treatments that aim at halting disease progression.

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