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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.

Status
Completed
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01691170
Acronym
PFPS
Enrollment
20
Registered
2012-09-24
Start date
2008-03-31
Completion date
2011-09-30
Last updated
2012-09-25

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

Conditions

Patellofemoral Pain Syndrome

Keywords

Pattelofemoral pain syndrome, Stretching, Strengthening

Brief summary

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.

Interventions

OTHERStretching Hamstring

Sponsors

University of Sao Paulo
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 40 Years
Healthy volunteers
No

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.

Design outcomes

Primary

MeasureTime frameDescription
Numeric Pain Rating ScaleParticipants 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.

Secondary

MeasureTime frameDescription
Lysholm ScaleParticipants 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.

Countries

Brazil

Outcome results

None listed

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