Muscle Activation Profiles and Co-Activation of Quadriceps and Hamstring Muscles around Knee Joint in Indian Primary Osteoarthritis Knee Patients
Introduction: Osteoarthritis (OA) of knee is a common joint disease. It is associated with reduced knee joint stability due to impaired quadriceps strength, pain, and an altered joint structure. There is altered muscle activation in knee OA patients, which interferes with normal load distributio...
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doaj-beca13d5a3754764b39ae5a4bd9c0fe92020-11-25T02:20:45ZengJCDR Research and Publications Private LimitedJournal of Clinical and Diagnostic Research2249-782X0973-709X2017-05-01115RC09RC1410.7860/JCDR/2017/26975.9870Muscle Activation Profiles and Co-Activation of Quadriceps and Hamstring Muscles around Knee Joint in Indian Primary Osteoarthritis Knee PatientsSanjeev Kumar Sharma0Shiv Lal Yadav1U Singh2Sanjay Wadhwa3Assistant Professor, Department of Physical Medicine and Rehabilitation, RUHS College of Medical Sciences, Jaipur, Rajasthan, India.Professor, Department of Physical Medicine and Rehabilitation, All India Institute of Medical Sciences (AIIMS), New Delhi, India.Professor, Department of Physical Medicine and Rehabilitation, All India Institute of Medical Sciences (AIIMS), New Delhi, India.Professor, Department of Physical Medicine and Rehabilitation, All India Institute of Medical Sciences (AIIMS), New Delhi, India.Introduction: Osteoarthritis (OA) of knee is a common joint disease. It is associated with reduced knee joint stability due to impaired quadriceps strength, pain, and an altered joint structure. There is altered muscle activation in knee OA patients, which interferes with normal load distribution around the knee and facilitates disease progression. Aim: Our primary aim was to determine activation patterns of the muscles i.e., quadriceps and hamstrings in knee OA patients during walking. We also studied co-activation of muscles around knee joint in primary OA knee patients including directed medial and lateral co-contractions. Materials and Methods: This observational study was done at Department of Physical Medicine and Rehabilitation, All India Institute of Medical Sciences, New Delhi, India. Fortyfour patients with medial compartment primary knee OA were included in study after satisfying inclusion and exclusion criteria. All the patients were assessed for mean, peak and integrated Root Mean Square (RMS), EMG values, muscle activation patterns and co-activation of muscles around knee joint by surface Electromyography (EMG) analysis of Vastus Medialis Obliques (VMO), Vastus Lateralis (VL), Semitendinosus (SMT) and Biceps Femoris (BF) muscles during gait cycle. The EMG waveform for each muscle was amplitude normalized and time normalized to 100% of gait cycle and plotted on graph. Quantitative variables were assessed for normal distribution and accordingly mean±SD or median (range), as appropriate, was computed. Results: For primary OA knee, mean age 61±5 years, mean weight 63.7±10.1 kg, mean height 153.9±7.2 cm, and mean Body Mass Index (BMI) 26.8±3.0 kg/m² was found. The muscle activity of hamstrings (SMT muscle and BF) was increased during midstance, late stance and early swing phase of gait cycle as compared to quadriceps (VMO and VL) muscle activity respectively, suggesting co-contraction of opposing muscles around knee joint. Conclusion: Patients with knee OA walk with increased hamstring muscle activity (during late stance and early swing phase) and reduced quadriceps recruitment. Altered neuro-muscular control around knee interferes with normal load distribution and facilitates disease progression in knee joint.https://jcdr.net/articles/PDF/9870/26975_CE[Ra1]_F(GH)_PF1(SG_SS)_PFA(P)_PF2(PNE).pdfmuscle activation patternsmuscle co-activationmuscle co-contractionsurface electromyography |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Sanjeev Kumar Sharma Shiv Lal Yadav U Singh Sanjay Wadhwa |
spellingShingle |
Sanjeev Kumar Sharma Shiv Lal Yadav U Singh Sanjay Wadhwa Muscle Activation Profiles and Co-Activation of Quadriceps and Hamstring Muscles around Knee Joint in Indian Primary Osteoarthritis Knee Patients Journal of Clinical and Diagnostic Research muscle activation patterns muscle co-activation muscle co-contraction surface electromyography |
author_facet |
Sanjeev Kumar Sharma Shiv Lal Yadav U Singh Sanjay Wadhwa |
author_sort |
Sanjeev Kumar Sharma |
title |
Muscle Activation Profiles and Co-Activation of Quadriceps and Hamstring Muscles around Knee Joint in Indian Primary Osteoarthritis Knee Patients |
title_short |
Muscle Activation Profiles and Co-Activation of Quadriceps and Hamstring Muscles around Knee Joint in Indian Primary Osteoarthritis Knee Patients |
title_full |
Muscle Activation Profiles and Co-Activation of Quadriceps and Hamstring Muscles around Knee Joint in Indian Primary Osteoarthritis Knee Patients |
title_fullStr |
Muscle Activation Profiles and Co-Activation of Quadriceps and Hamstring Muscles around Knee Joint in Indian Primary Osteoarthritis Knee Patients |
title_full_unstemmed |
Muscle Activation Profiles and Co-Activation of Quadriceps and Hamstring Muscles around Knee Joint in Indian Primary Osteoarthritis Knee Patients |
title_sort |
muscle activation profiles and co-activation of quadriceps and hamstring muscles around knee joint in indian primary osteoarthritis knee patients |
publisher |
JCDR Research and Publications Private Limited |
series |
Journal of Clinical and Diagnostic Research |
issn |
2249-782X 0973-709X |
publishDate |
2017-05-01 |
description |
Introduction: Osteoarthritis (OA) of knee is a common joint
disease. It is associated with reduced knee joint stability due
to impaired quadriceps strength, pain, and an altered joint
structure. There is altered muscle activation in knee OA patients,
which interferes with normal load distribution around the knee
and facilitates disease progression.
Aim: Our primary aim was to determine activation patterns of
the muscles i.e., quadriceps and hamstrings in knee OA patients
during walking. We also studied co-activation of muscles around
knee joint in primary OA knee patients including directed medial
and lateral co-contractions.
Materials and Methods: This observational study was done
at Department of Physical Medicine and Rehabilitation, All
India Institute of Medical Sciences, New Delhi, India. Fortyfour patients with medial compartment primary knee OA were
included in study after satisfying inclusion and exclusion
criteria. All the patients were assessed for mean, peak and
integrated Root Mean Square (RMS), EMG values, muscle
activation patterns and co-activation of muscles around knee
joint by surface Electromyography (EMG) analysis of Vastus
Medialis Obliques (VMO), Vastus Lateralis (VL), Semitendinosus
(SMT) and Biceps Femoris (BF) muscles during gait cycle. The
EMG waveform for each muscle was amplitude normalized and
time normalized to 100% of gait cycle and plotted on graph.
Quantitative variables were assessed for normal distribution
and accordingly mean±SD or median (range), as appropriate,
was computed.
Results: For primary OA knee, mean age 61±5 years, mean
weight 63.7±10.1 kg, mean height 153.9±7.2 cm, and mean
Body Mass Index (BMI) 26.8±3.0 kg/m² was found. The muscle
activity of hamstrings (SMT muscle and BF) was increased
during midstance, late stance and early swing phase of gait
cycle as compared to quadriceps (VMO and VL) muscle activity
respectively, suggesting co-contraction of opposing muscles
around knee joint.
Conclusion: Patients with knee OA walk with increased hamstring
muscle activity (during late stance and early swing phase)
and reduced quadriceps recruitment. Altered neuro-muscular
control around knee interferes with normal load distribution and
facilitates disease progression in knee joint. |
topic |
muscle activation patterns muscle co-activation muscle co-contraction surface electromyography |
url |
https://jcdr.net/articles/PDF/9870/26975_CE[Ra1]_F(GH)_PF1(SG_SS)_PFA(P)_PF2(PNE).pdf |
work_keys_str_mv |
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