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Status unknownNCT02904785Updated Sep 19, 2016

Extracorporeal Focused Shock Wave Therapy for Primary Knee Osteoarthritis

A Phase 2 interventional study of Extracorporeal Shock Waves and Sham Extracorporeal Shock Waves in Unilateral Primary Osteoarthritis of Knee, sponsored by University of Sao Paulo General Hospital. Status unknown at 1 site in Brazil. Open to participants aged 45 Years to 80 Years. Per ClinicalTrials.gov, last updated 2016-09-19.

Sponsored by University of Sao Paulo General Hospital · Phase 2, Interventional, and Treatment

The sponsor has not verified this record recently (last verified Sep 2016), so the status shown — last known as Recruiting — may be out of date.
Phase
Phase 2
Study type
Interventional
Enrollment
30
Allocation
Randomized
Ages
45 Years to 80 Years
Sex
All
01

Study summary

The purpose of this study is to determine whether Extracorporeal Focused Shock Wave Therapy reduces knee pain and enhance function in patients with primary knee osteoarthritis.

Read the detailed description

This study is a placebo controlled Randomized Clinical Trial (RCT) in which the primary outcome is to determine whether Extracorporeal Focused Shock Wave Therapy (ESWT) reduces knee pain comparing the VAS at baseline and one month after the end of the treatment. Function assessment and progression of pain along the treatment are the secondary outcomes. Function will be assessed with the Western Ontario \& McMaster Universities Osteoarthritis Index (WOMAC), the Lequesne's Algofunctional Questionnaire for Osteoarthritis of Knee (Lequesne) and the Timed up and Go (TUG).

The ESWT applications will be performed once a week for four consecutive weeks, the patients will be assessed for pain and function before the beginning of the treatment and one week after every application of the ESWT.

The treatment groups will be randomized. The allocation of the patients is sealed and will not be disclosed to the patients nor to the evaluators.

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Conditions studied

  • Unilateral Primary Osteoarthritis of Knee
03

In context

Lead sponsor

University of Sao Paulo General Hospital is the lead sponsor of 608 studies on the registry; 97 are open to participants now.

Of its 8 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.

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

04

Who can participate

Ages eligible
45 Years to 80 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Clinical and radiologic diagnosis of primary knee osteoarthritis (Kellgren \& Lawrence I, II or III);
  • Capability to understand the Informed Consent Form;
  • Chronic pain for at least 3 months prior to inclusion, measured by VAS. (VAS 4 or above);
  • Absence of skin injures, infections or tumor in the target knee;
  • Availability to comply with the visits.

Exclusion criteria

Exclusion Criteria:

  • History of spinal cord stenosis or clinical symptoms of lumbar radiculopathy;
  • History or onset neurological diseases;
  • Generalized pain or fibromyalgia;
  • Inability to walk;
  • History of knee surgery in the target knee;
  • Secondary causes of osteoarthritis;
  • Use of statins and quinolones in the previous year;
  • Uncontrolled and ongoing psychiatric diseases;
  • Invasive knee treatments with hyaluronic acid infusion, corticosteroids and anaesthetics, in the target knee, up to 6 months previous to study inclusion.
05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Investigator, Outcomes assessor)
Enrollment
30 participants (estimated)

Study arms

  • Experimental
    Extracorporeal Shock Waves

    Focused shock waves delivered by an electromagnetic generator with a focus of 5.0cm deep on the affected knee in three different positions. A total of 7000 pulses will be delivered on a weekly session for four weeks.

    Device: Extracorporeal Shock Waves · Other: Physical activities

  • Sham comparator
    Sham Extracorporeal Shock Waves

    Sham focused shock waves delivered by an electromagnetic generator on the affected knee in three different positions. A total of 7000 pulses will be delivered on a weekly session for four weeks. A foam will be placed in the probe as to stop the energy to be transmitted to the patient's knee, so no focused shockwaves will be delivered.

    Device: Sham Extracorporeal Shock Waves · Other: Physical activities

Interventions

  • DeviceExtracorporeal Shock Waves
  • DeviceSham Extracorporeal Shock Waves
  • OtherPhysical activities

    Patients receive instructions for physical activities for strengthening of femoral quadriceps and stretching of hamstring muscles.

06

What researchers measure

Primary outcomes

  1. Knee Pain after one month

    Mean change in Visual Analogue Scale (VAS) score one month after the end of the treatment compared to baseline.

    Time frame: One month

Secondary outcomes

  1. Knee pain progression

    Mean change in VAS score one week after each application compared to baseline.

    Time frame: One week after each of four weekly ESWT applications

  2. Knee Pain after three months

    Mean change in VAS score three months after the end of the treatment compared to baseline.

    Time frame: Three months

  3. Lequesne Knee Function progression

    Mean change in Lequesne score one week after each application compared to baseline.

    Time frame: One week after each of four weekly ESWT applications

  4. Lequesne Knee Function after three months

    Mean change in Lequesne three months after the end of the treatment compared to baseline.

    Time frame: Three months

  5. WOMAC Knee Function progression

    Mean change in WOMAC score one week after each application compared to baseline.

    Time frame: One week after each of four weekly ESWT applications

  6. TUG Knee Function progression

    Mean change in TUG score one week after each application compared to baseline.

    Time frame: One week after each of four weekly ESWT applications

  7. WOMAC Knee Function after three months

    Mean change in WOMAC score three months after the end of the treatment compared to baseline.

    Time frame: Three months

  8. TUG Knee Function after three months

    Mean change in TUG score three months after the end of the treatment compared to baseline.

    Time frame: Three months

07

Study locations

1 of 1 sites recruiting
  • Centro de Pesquisa Clínica do Instituto de Medicina Física e Reabilitação do HCFMUSP
    São Paulo, São Paulo 04116-030, Brazil
    Recruiting
08

References and documents

Individual participant data

Plan to share: Undecided

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 Sep 19, 2016, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT02904785
Responsible party
Linamara Rizzo Battistella, MD PhD (PhD, University of Sao Paulo General Hospital) — Principal investigator
First posted
Sep 19, 2016
Start date
May 2016
Primary completion
Oct 2016 (estimated)
Completion
Dec 2016 (estimated)
Last update
Sep 19, 2016

Study contacts

Gilson T Shinzato, MD
Contact
g.shinzato@hc.fm.usp.br
55-11-99688-0698
Fabíola Cavalieri, MD
Contact
fabiola.cavalieri@hc.fm.usp.br
55-11-99212-3999
Linamara R Battistella, PhD, MD
principal investigator · University of Sao Paulo

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Sep 2016. You cannot join it, but the record below documents what was studied.

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