Skip to content

Electromyographic Biofeedback on Performance of Vastus Medialis Oblique Muscle in Knee Osteoarthritis

Effects of Electromyographic Biofeedback on Performance of Vastus Medialis Oblique Muscle in Knee Osteoarthritis

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04194853
Enrollment
30
Registered
2019-12-11
Start date
2019-08-01
Completion date
2020-01-08
Last updated
2020-01-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Knee Osteoarthritis

Brief summary

This study intends to determine the Effects of Electromyographic biofeedback on performance of vastus medialis oblique muscle in knee osteoarthritis.

Detailed description

This is a single blinded randomized controlled trial, will be conducted at Railway General Hospital.Rawalpindi. (EMG) biofeedback as an adjunct therapy to standard exercise regime for increasing muscle strength ,this study is planned to determine the effects of electromyographic biofeedback on performance and thickness of vastus medialis oblique muscle, knee pain and on lower extremity function in patients with Knee Osteoarthritis. The sample size was calculated to be n=34 through Open Epi tool version 3, with 95 % confidence interval (CI), and power 80%. After the completion of therapeutic protocols, the participants will be assessed with the help of Numeric Pain Rating Scale (NPRS), WOMAC, Lequesne questionnaire , 1 Repetition maximum( RM) and with MSK ultrasound

Interventions

Surface EMG biofeedback is an adjunct therapy to standard exercise regime for increasing muscle strength .Electromyographic (EMG) biofeedback is a specific form of biofeedback. The biofeedback device records muscle activity through the application of electrodes superficially or subcutaneously when targeting specific muscles

OTHERQuadriceps Isometric exercises

In supine lying or sitting, Patient is asked to press down knee while contracting Quadriceps muscles.

Sponsors

Riphah International University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Subject)

Masking description

There will be two treatment groups of participants, Experimental group will receive Isometric exercises with EMGBF( Electromyographic Biofeedback ) and control group receive exercises without EMGBF.

Intervention model description

There will be two treatment groups of participants, Experimental group will receive Isometric exercises with EMGBF( Electromyographic Biofeedback ) and control group receive exercises without EMGBF.

Eligibility

Sex/Gender
ALL
Age
50 Years to 65 Years
Healthy volunteers
Yes

Inclusion criteria

* Age : In between 45 - 65years * Both Genders * Subjects with a definite diagnosis of knee OA according to the guidelines of the American College of Rheumatology with at least 6 months of knee pain. * Grade 1 or 2 joint cartilage degradation based on the Kellgren-Lawrence classification * Body mass index (BMI) of \<35 kg/m2

Exclusion criteria

* Subjects who had undergone physical therapy or intraarticular injection in the past 3 months * Patients who had taken oral corticosteroids in the past 4 weeks * Patients with a history of surgical interventions on their knees * Subjects with a history of radiculopathy, or those with a history of systemic diseases, such as rheumatoid arthritis

Design outcomes

Primary

MeasureTime frameDescription
Numeric Pain Rating Scale (NPRS)Post 6 WeeksChanges from the baseline, Numeric Pain Rating Scale (NPRS) is used to assess pain. It scores ranges from 0-10, 0 means No pain and 10 means Severe pain. Patient will be asked to verbally report the pain score.
1 Repetition MaximumPost 6th weekChanges from the baseline, 1 RM Is used to assess maximum muscle strength. Patient is asked to extend knee against maximum resistance once.
Vastus medialis Oblique(VMO) ThicknessPost 6th weekChanges from the Baseline, Musculoskeletal ultrasound will be used to measure maximum thickness of VMO muscle. Assessment will be done by a Consultant radiologist using a 7-12 MHz probe

Secondary

MeasureTime frameDescription
Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC)Post 6 weeksChanges from the baseline, WOMAC is used to assess the functional status. The questionnaire includes five questions about pain severity (0-20), two items on joint stiffness (0-8), and 17 questions on functional limitations of the patient (0-68). Each item is scored on a scale of 0-4, and the greater the score, the worse the pain and function. The total score of the subjects from this index was reported from a total of 96.

Countries

Pakistan

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026