Knee muscle activation patterns are altered in patients with moderate knee osteoarthritis during gait retraining designed to reduce the knee adduction moment

2016 ◽  
Vol 49 ◽  
pp. 71 ◽  
Keyword(s):  
Knee Osteoarthritis ◽  
Muscle Activation ◽  
Knee Adduction Moment ◽  
Gait Retraining ◽  
Activation Patterns ◽  
Muscle Activation Patterns ◽  
Knee Muscle

scholarly journals Inter-laboratory comparison of knee biomechanics and muscle activation patterns during gait in patients with knee osteoarthritis

The Knee ◽  
2021 ◽  
Vol 29 ◽  
pp. 500-509
Author(s):  
J.C. Schrijvers ◽  
D. Rutherford ◽  
R. Richards ◽  
J.C. van den Noort ◽  
M. van der Esch ◽  
...  
Keyword(s):  
Knee Osteoarthritis ◽  
Muscle Activation ◽  
Knee Biomechanics ◽  
Activation Patterns ◽  
Muscle Activation Patterns

Alterations in lower extremity movement and muscle activation patterns in individuals with knee osteoarthritis

2004 ◽  
Vol 19 (1) ◽  
pp. 44-49 ◽  
Author(s):  
John D Childs ◽  
Patrick J Sparto ◽  
G.Kelley Fitzgerald ◽  
Mario Bizzini ◽  
James J Irrgang
Keyword(s):  
Lower Extremity ◽  
Knee Osteoarthritis ◽  
Muscle Activation ◽  
Activation Patterns ◽  
Muscle Activation Patterns

scholarly journals Fatigue’s Lack of Effect on Thigh-Muscle Activity in Anterior Cruciate Ligament–Reconstructed Patients During a Dynamic-Landing Task

2013 ◽  
Vol 22 (2) ◽  
pp. 83-92 ◽  
Author(s):  
Lindsey K. Lepley ◽  
Abbey C. Thomas ◽  
Scott G. McLean ◽  
Riann M. Palmieri-Smith
Keyword(s):  
Anterior Cruciate Ligament ◽  
Outcome Measures ◽  
Muscle Activity ◽  
Muscle Activation ◽  
Cruciate Ligament ◽  
Activation Patterns ◽  
Female Age ◽  
Muscle Activation Patterns ◽  
Anterior Cruciate ◽  
Knee Muscle

Context:As individuals returning to activity after anterior cruciate ligament reconstruction (ACLr) likely experience fatigue, understanding how fatigue affects knee-muscle activation patterns during sport-like maneuvers is of clinical importance. Fatigue has been suggested to impair neuromuscular control strategies. As a result, fatigue may place ACLr patients at increased risk of developing posttraumatic osteoarthritis (OA).Objective:To determine the effects of fatigue on knee-muscle activity post-ACLr.Design:Case control.Setting:University laboratory.Participants:12 individuals 7–10 mo post-ACLr (7 male, 5 female; age 22.1 ± 4.7 y; 1.8 ± 0.1 m; mass 77.7 ± 11.9 kg) and 13 controls (4 male, 9 female; age 22.9 ± 4.3 y; 1.7 ± 0.1 m; mass 66.9 ± 9.8 kg).Interventions:Fatigue was induced via repetitive sets of double-leg squats (n = 8), which were interspersed with sets of single-leg landings (n = 3), until squats were no longer possible.Main Outcome Measures:2 × 2 repeated-measures ANOVA was used to detect the main effects of group (ACLr, control) and fatigue state (prefatigue, postfatigue) on quadriceps:hamstring cocontraction index (Q:H CCI).Results:All subjects demonstrated higher Q:H CCI at prefatigue compared with postfatigue (F1,23 = 66.949, P ≤ .001). Q:H CCI did not differ between groups (F1,23 = 0.599, P = .447).Conclusions:The results indicate that regardless of fatigue state, ACLr individuals are capable of restoring muscle-activation patterns similar to those in healthy subjects. As a result, excessive muscle cocontraction, which has been hypothesized as a potential mechanism of posttraumatic OA, may not contribute to joint degeneration after ACLr.

Aging Related Changes in the Kinematics of Walking: A Potential Pathway to Changes in Cartilage Morphology

2012 ◽  
Author(s):  
K. A. Boyer ◽  
T. P. Andriacchi
Keyword(s):  
Muscle Strength ◽  
Knee Osteoarthritis ◽  
Muscle Activation ◽  
Sagittal Plane ◽  
Activation Patterns ◽  
Muscle Activation Patterns ◽  
Age Related ◽  
Ligament Stiffness ◽  
Spatio Temporal ◽  
Age Related Changes

Age-related changes in spatio-temporal and sagittal plane walking mechanics are well documented [1, 2]. These changes along with age-related changes in muscle strength, muscle activation patterns and ligament stiffness [3] may also lead to changes in both rotational and translation motions at the knee. It has been suggested that alterations in the normal kinematics of the knee related to aging may be a contributing factor to the increased incidence of knee osteoarthritis (OA) with aging [4].

scholarly journals A new integrated behavioural intervention for knee osteoarthritis: development and pilot study

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Stephen J. Preece ◽  
Nathan Brookes ◽  
Anita E. Williams ◽  
Richard K. Jones ◽  
Chelsea Starbuck ◽  
...  
Keyword(s):  
Knee Osteoarthritis ◽  
Large Scale ◽  
Muscle Activation ◽  
Biofeedback Training ◽  
Behavioural Intervention ◽  
Clinical Effects ◽  
Motivation To Change ◽  
Muscle Strengthening ◽  
Muscle Activation Patterns ◽  
Knee Muscle

Abstract Background Exercise-based approaches have been a cornerstone of physiotherapy management of knee osteoarthritis for many years. However, clinical effects are considered small to modest and the need for continued adherence identified as a barrier to clinical efficacy. While exercise-based approaches focus on muscle strengthening, biomechanical research has identified that people with knee osteoarthritis over activate their muscles during functional tasks. Therefore, we aimed to create a new behavioural intervention, which integrated psychologically informed practice with biofeedback training to reduce muscle overactivity, and which was suitable for delivery by a physiotherapist. Methods Through literature review, we created a framework linking theory from pain science with emerging biomechanical concepts related to overactivity of the knee muscles. Using recognised behaviour change theory, we then mapped a set of intervention components which were iteratively developed through ongoing testing and consultation with patients and physiotherapists. Results The underlying framework incorporated ideas related to central sensitisation, motor responses to pain and also focused on the idea that increased knee muscle overactivity could result from postural compensation. Building on these ideas, we created an intervention with five components: making sense of pain, general relaxation, postural deconstruction, responding differently to pain and functional muscle retraining. The intervention incorporated a range of animated instructional videos to communicate concepts related to pain and biomechanical theory and also used EMG biofeedback to facilitate visualization of muscle patterns. User feedback was positive with patients describing the intervention as enabling them to “create a new normal” and to be “in control of their own treatment.” Furthermore, large reductions in pain were observed from 11 patients who received a prototype version of the intervention. Conclusion We have created a new intervention for knee osteoarthritis, designed to empower individuals with capability and motivation to change muscle activation patterns and beliefs associated with pain. We refer to this intervention as Cognitive Muscular Therapy. Preliminary feedback and clinical indications are positive, motivating future large-scale trials to understand potential efficacy. It is possible that this new approach could bring about improvements in the pain associated with knee osteoarthritis without the need for continued adherence to muscle strengthening programmes. Trial registration ISRCTN51913166 (Registered 24-02-2020, Retrospectively registered).

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