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CompletedNCT04462718Updated Aug 17, 2020

Efficacy Analysis in Long Term of Radiofrecuency Combined vs. T.E. in the Treatment of Patellofemoral Pain Syndrome.

An interventional study of Radiofrecuency and Therapeutic Exercise in Patellofemoral Pain Syndrome, sponsored by University of Seville. Completed at 1 site in Spain. Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2020-08-17.

Sponsored by University of Seville · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Registered 8 months after the study started (first participant enrolled Oct 2019, registered Jun 2020).
Phase
Not applicable
Study type
Interventional
Enrollment
86
Allocation
Randomized
Ages
18 Years to 65 Years
Sex
All
01

Study summary

The present study aims to promote research in the field of Physiotherapy, focusing on a health problem of maximum relevance, such as patellofemoral pain syndrome.

Although these treatments seem to be based on theoretical reasoning, the evidence for the efficacy of these interventions is not well established. Therefore, we select from among all the therapeutic tools available in physiotherapy, a procedure of therapeutic physical exercise.

Main objectives:

To know the efficacy of a therapeutic physical exercise protocol in the reduction of pain and the improvement of functional disability in patients with patellofemoral pain syndrome (PFPS).

Secondary objectives:

  • Quantify the reduction of pain in the anterior aspect of the knee in patients with patellofemoral pain syndrome (PFPS), after treatment with monopolar capacitive diathermy by radiofrequency.
  • To evaluate the improvement of functional disability in patients with patellofemoral pain syndrome (PFPS), after treatment with monopolar capacitive diathermy by radiofrequency.

Study hypothesis:

The treatment of patellofemoral pain syndrome (PFPS) with a therapeutic physical exercise protocol produces statistically significant changes in the reduction of pain and functional disability and the normalization of the anthropometric values of the joint balance of the knee

Read the detailed description

At first, a meeting will be held with the patients under study where they will be informed and any doubts that may arise in relation to the investigation will be resolved. In addition, the correct adaptation of these to the inclusion and exclusion criteria of our study will be verified. Subsequently, they will be given individually the informed consent prepared expressly for the present study, the doubts arising with respect to this one will be resolved and their signature will proceed. At this time, and individually again, we will proceed to the development of the Clinical History of Physiotherapy where only the information necessary for our study will be collected.

To emphasize in this point that the participants will grant their consent for the treatment of the data obtained for scientific purposes, according to the legal norms.

Next, the patients will be randomly assigned to two groups: control group and experimental group. The randomization of the sample was done through the EPIDAR software in version 3.1 between the Experimental Group and the Control Group Subsequently, the evaluations and measurements of the study variables will be carried out by the research team.

CONTROL GROUP: You will be provided exclusively therapeutic exercises protocol to develop supervised by Physical Therapist that you must perform following a daily activity for three weeks. They will be evaluated at the end of that period and six moths later in order to have at least three timepoints to evaluate.

EXPERIMENTAL GROUP: After the initial evaluation, the first 10 treatment sessions will be developed at the rate of five daily sessions in the first week, three sessions on alternate days in the second week and two sessions on alternate days in the third week (3 weeks in total), applying the monopolar capacitive diathermy with radiofrequency in the anterior aspect of the knee, in dynamic application in one of the members: affect or randomized (uni or bilateral pathology, respectively). This diathermy will be combined with a therapeutic exercise program supervised by a Physiotherapist.

The treatment is administered with a Diathermy equipment and inductive electrodes of 100 W peak power, with a frequency of application of twice daily with a dose submitis (grade I), for 10 min, with a frequency of repetition of the impulses of 46 Hz and a pulse duration of 0.2 ms

After the tenth treatment session all the measurements will be repeated following the same environmental conditions as at the beginning and by the evaluators themselves to the components of both groups.Those measurements will be evaluated at the end of that three weeks period and six moths later in order to have at least three timepoints to evaluate.

02

Conditions studied

  • Patellofemoral Pain Syndrome

Keywords

  • Musculoskeletal
  • Physical Medicine / Rehabilitation
  • Physiotherapy
  • Knee Pain
03

In context

Patellofemoral Pain Syndrome

295 studies on the registry are indexed under Patellofemoral Pain Syndrome; 75 are open to participants now.

This study's enrollment of 86 is above the median of 45 across 242 interventional studies indexed under Patellofemoral Pain Syndrome.

Browse Patellofemoral Pain Syndrome studies →

Lead sponsor

University of Seville is the lead sponsor of 127 studies on the registry; 37 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  1. Age from 18 to 55
  2. . Patients with anterior knee pain were referred by a primary care physician at a public health center in southern Spain. Those participants with a self-reported pain intensity = 30 mm on the Visual Analog Scale (VAS) and a score \<45 points in personal psychology The Apprehension Scale (PPAS) were invited to participate. The PPAS is a valid, reliable and easy-to-use tool for assessing the apprehension of subjects to receive electrical stimulation therapy.

Exclusion criteria

Exclusion Criteria:

  1. Any contraindication for the use of MDR.
  2. Present cognitive alterations.
  3. Have undergone conservative or surgical treatment of the knee in less than 6 months.
  4. Having received injections of corticosteroids or hyaluronic acid; impaired cognition or communication; and be involved in an ongoing medical-legal dispute.
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
86 participants (actual)

Study arms

  • Active comparator
    CONTROL GROUP:

    You will be provided exclusively therapeutic exercises protocol to develop in the home setting that you must perform following a daily activity for three weeks.

    Other: Therapeutic Exercise

  • Experimental
    EXPERIMENTAL GROUP

    After the initial evaluation, the first 10 treatment sessions will be developed at the rate of five daily sessions in the first week, three sessions on alternate days in the second week and two sessions on alternate days in the third week (3 weeks in total), applying the monopolar capacitive diathermy with radiofrequency in the anterior aspect of the knee, in dynamic application in one of the members: affect or randomized (uni or bilateral pathology, respectively). This diathermy will be combined with a therapeutic exercise program supervised by a Physiotherapist. The treatment is administered with a pulsatile short-wave equipment and inductive electrodes of 100 W peak power, with a frequency of application of twice daily with a dose submitis (grade I), for 10 min, with a frequency of repetition of the impulses of 46 Hz and a pulse duration of 0.2 ms.

    Other: Radiofrecuency

Interventions

  • OtherRadiofrecuency

    EXPERIMENTAL GROUP: After the initial evaluation, the first 10 treatment sessions will be developed at the rate of five daily sessions in the first week, three sessions on alternate days in the second week and two sessions on alternate days in the third week (3 weeks in total), applying the monopolar capacitive diathermy with radiofrequency in the anterior aspect of the knee, in dynamic application in one of the members: affect or randomized (uni or bilateral pathology, respectively). This diathermy will be combined with a therapeutic exercise program supervised by a Physiotherapist.

  • OtherTherapeutic Exercise

    CONTROL GROUP: will be provided exclusively therapeutic exercises protocol to develop in the home setting that you must perform following a daily activity for three weeks. They will be evaluated at the end of that period and six moths later in order to have at least three timepoints to evaluate.

06

What researchers measure

Primary outcomes

  1. The perception of pain through the Visual Analogue Scale (EVA).

    The perception of pain through the Visual Analogue Scale (EVA). This variable has been obtained through a validated scale of 10 centimeters (0-10), where the subject self-positioned from absence of pain to the worst bearable pain.

    Time frame: Time point 1: before the intervention

  2. The perception of pain through the Visual Analogue Scale (EVA).

    The perception of pain through the Visual Analogue Scale (EVA). This variable has been obtained through a validated scale of 10 centimeters (0-10), where the subject self-positioned from absence of pain to the worst bearable pain.

    Time frame: Time point 2: when the intervention was finished (after 10 sesions : 2 weeks)

  3. The perception of pain through the Visual Analogue Scale (EVA).

    The perception of pain through the Visual Analogue Scale (EVA). This variable has been obtained through a validated scale of 10 centimeters (0-10), where the subject self-positioned from absence of pain to the worst bearable pain.

    Time frame: Time point 3: six months later the initial evaluation.

  4. Kujala Score.

    The functional disability, quantified by means of the tests: Kujala Score.

    Time frame: Time point 1: before the intervention

  5. Kujala Score.

    The functional disability, quantified by means of the tests: Kujala Score.

    Time frame: Time point 2: when the intervention was finished (after 10 sesions : 2 weeks)

  6. Kujala Score.

    The functional disability, quantified by means of the tests: Kujala Score.

    Time frame: Time point 3: six months later the initial evaluation.

Secondary outcomes

  1. Active and Pasive Knee's Range of Movement

    In addition an anthropometric study of knee joint range of movement will be performed. Evaluating the Active and Pasive Knee's Range of Movement using universal goniometer measurement. we pay special attention to the possible restrictions in the normal range of motion

    Time frame: Time point 1: before the intervention.

  2. Active and Pasive Knee's Range of Movement

    In addition an anthropometric study of knee joint range of movement will be performed. Evaluating the Active and Pasive Knee's Range of Movement using universal goniometer measurement. we pay special attention to the possible restrictions in the normal range of motion

    Time frame: Time point 2: when the intervention was finished (after 10 sesions : 2 weeks)

  3. Active and Pasive Knee's Range of Movement

    In addition an anthropometric study of knee joint range of movement will be performed. Evaluating the Active and Pasive Knee's Range of Movement using universal goniometer measurement. we pay special attention to the possible restrictions in the normal range of motion

    Time frame: Time point 3: six months later the initial evaluation.

07

Study locations

1 site
  • Cristo Jesús Barrios Quinta
    Sevilla, 41008, Spain
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 17, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04462718
Lead sponsor
University of Seville
Responsible party
Manuel Albornoz Cabello (Clinical Professor, University of Seville) — Principal investigator
First posted
Jul 8, 2020
Start date
Oct 1, 2019
Primary completion
Mar 30, 2020
Completion
Mar 30, 2020
Last update
Aug 17, 2020

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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