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The Effect of Transcutaneous Electrical Nerve Stimulation on Quadriceps Central Activation and Gait

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00976079
Recruitment Status : Completed
First Posted : September 14, 2009
Last Update Posted : September 14, 2009
Information provided by:
University of Virginia

Brief Summary:
Participants diagnosed with tibial femoral knee osteoarthritis will be assigned to one of three treatment groups including: active transcutaneous electrical nerve stimulation (TENS), placebo TENS, and a control group. Assignment of conditions will be concealed. All participants in each of the three groups will receive physical therapy for all 4 weeks of the intervention. Main outcome measures will include quadriceps central activation ratio, quadriceps torque production, WOMAC scores, visual analog pain scores during gait as well as knee joint kinetics and kinematics during gait. The purpose of this study is to to determine if the continuous use of TENS therapy for activities of daily living and rehabilitation will positively impact all outcome measures.

Condition or disease Intervention/treatment Phase
Tibial Femoral Knee Osteoarthritis Osteoarthritis Device: Transcutaneous electrical nerve stimulation (TENS) Device: Placebo TENS Not Applicable

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 49 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single (Outcomes Assessor)
Primary Purpose: Treatment
Official Title: The Effect of Transcutaneous Electrical Nerve Stimulation on Quadriceps Central Activation and Gait
Study Start Date : November 2007
Actual Primary Completion Date : May 2009
Actual Study Completion Date : August 2009

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Osteoarthritis

Arm Intervention/treatment
Experimental: Active TENS
Active TENS therapy for 4 weeks plus standard physical therapy for same time period.
Device: Transcutaneous electrical nerve stimulation (TENS)
Continuous TENS use

Placebo Comparator: Placebo TENS
Placebo TENS for 4 weeks plus standard physical therapy for same time period.
Device: Placebo TENS
Placebo TENS use

No Intervention: Control Group
No TENS, standard physical therapy for 4 weeks.

Primary Outcome Measures :
  1. Quadriceps central activation ratio [ Time Frame: 2 and 4 weeks ]
  2. Quadriceps torque production [ Time Frame: 2 and 4 weeks ]

Secondary Outcome Measures :
  1. WOMAC score [ Time Frame: 2 and 4 weeks ]
  2. Visual analog pain score [ Time Frame: 2 and 4 weeks ]
  3. Knee joint kinetics and kinematics [ Time Frame: 2 and 4 weeks ]

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   18 Years to 80 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Patients who have been diagnosed with a Kellgren and Lawrence grade of 1- 4 for Tibial Femoral Knee OA in at least one leg or have been diagnosed with OA by a physician using evidence confirmed from imaging studies, arthroscopy, or visualization during an past surgical procedures, or have medical reports confirming OA using imaging studies, arthroscopy, or visualization during an past surgical procedures.
  • Patients between the ages of 18 and 80 years of age.
  • Patients will have a CAR less than 90%.

Exclusion Criteria:

  • Patients who are pregnant.
  • Patients who have sought medical attention for a trauma to the knee injury within the past 6 months.
  • Patients who have had any orthopaedic lower extremity surgery in the past 6 months, or any surgery that would inhibition proper functioning of the study methodology.
  • Patients with a diagnosis of Rheumatoid Arthritis.
  • Patients with a known hypersensitivity to electrical stimulation.
  • Patients with any types of neuropathy.
  • Patients with known muscular abnormalities.
  • Patients with a history of a heart condition that precludes them from exercise.
  • The technique can not be performed on the leg that has had a total knee replacement, but if the other leg meets the inclusion criteria the subject can perform the study on the non- reconstructed leg.
  • Patients diagnosed with malignancy over the stimulating electrode site (thigh and knee).
  • Patients with serious infection near the stimulating electrode sites (thigh and knee)
  • Patients have not had a knee injection in the past 2 weeks.
  • Patients who are unable to walk a series of 30 meters without a walking assistance device.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00976079

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United States, Virginia
University of Virginia
Charlottesville, Virginia, United States, 22908
Sponsors and Collaborators
University of Virginia
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Principal Investigator: Christopher Ingersoll, PhD University of Virginia

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Responsible Party: Christopher D. Ingersoll, PhD, University of Virginia Identifier: NCT00976079    
Other Study ID Numbers: 13360
First Posted: September 14, 2009    Key Record Dates
Last Update Posted: September 14, 2009
Last Verified: September 2009
Keywords provided by University of Virginia:
Tibial femoral knee osteoarthritis
Additional relevant MeSH terms:
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Osteoarthritis, Knee
Joint Diseases
Musculoskeletal Diseases
Rheumatic Diseases