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Comparison of Two Protocols for Patellofemoral Pain Syndrome (PFPS)

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ClinicalTrials.gov Identifier: NCT01691170
Recruitment Status : Completed
First Posted : September 24, 2012
Last Update Posted : September 25, 2012
Information provided by (Responsible Party):
Gabriel Peixoto Leão Almeida, PT, University of Sao Paulo

September 16, 2012
September 24, 2012
September 25, 2012
March 2008
February 2011   (Final data collection date for primary outcome measure)
Numeric Pain Rating Scale [ Time Frame: Participants will be followed for the duration of 8 weeks. ]
Pain was assessed using an 11-point numeric pain rating scale (NPRS), on which 0 denoted an absence of pain and 10 denoted unbearable pain.
Same as current
Complete list of historical versions of study NCT01691170 on ClinicalTrials.gov Archive Site
Lysholm Scale [ Time Frame: Participants will be followed for the duration of 8 weeks. ]
This questionnaire is made up of eight items with objective response options. The final score is expressed in nominal and ordinal form, as follows: 95 to 100 points - excellent; 84 to 94 points - good; 65 to 83 points - fair; and 64 or fewer points - poor.
Same as current
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Comparison of Two Protocols for Patellofemoral Pain Syndrome
Quadriceps Femoris Strengthening Versus Hamstring Stretching for Patellofemoral Pain Syndrome: A Randomized Clinical Trial.
The patellofemoral pain syndrome (PFPS) is defined as a painful complaint in the anterior aspect of the knee, although peripatellar pain and / or retropatellar are also common. In general, conservative treatment is the initial option of choice for patients with PFPS, however, the lack of a specific causal factor makes it difficult to choose the best treatment so early. This way, the purpose of this study is investigate the effects of the quadriceps femoris strengthening versus hamstring stretching in patients with pattellofemoral pain.
Not Provided
Phase 1
Phase 2
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Patellofemoral Pain Syndrome
  • Other: Stretching Hamstring
  • Other: Quadriceps Strengthening
  • Active Comparator: Quadriceps Strengthening
    Intervention: Other: Quadriceps Strengthening
  • Active Comparator: Stretching Hamstring
    Intervention: Other: Stretching Hamstring
Not Provided

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
September 2011
February 2011   (Final data collection date for primary outcome measure)

Inclusion Criteria:

  • Symptoms of anterior knee pain for at least 1 moth;
  • Average pain level of 3 or more on a 10-cm visual analogue scale during stepping up and down a 25-cm height;
  • Anterior or retropatellar knee pain on at least 2 of the following activities: prolonged sitting, climbing stairs, squatting, running, kneeling, and hopping/jumping;
  • Presence of 2 of the following clinical criteria on assessment: pain during apprehension test, pain during the patellar compression test, and crepitation during the compression test.

Exclusion Criteria:

  • Previous knee surgery or arthritis;
  • History of patellar dislocation or subluxation, malalignment, or ligament laxity;
  • Patellar tendon pathology or chondral damage;
  • Spinal referred pain;
  • History of other abnormalities such as leg length inequalities (>2 cm);
  • Medication as a part of the treatment;
  • Previous physical therapy or acupuncture treatment for the knee within the previous 30 days.
Sexes Eligible for Study: All
18 Years to 40 Years   (Adult)
Contact information is only displayed when the study is recruiting subjects
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Gabriel Peixoto Leão Almeida, PT, University of Sao Paulo
University of Sao Paulo
Not Provided
Not Provided
University of Sao Paulo
September 2012

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP