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Quadriceps Strengthening At Different Angles in Patellofemoral Pain

RecruitingNAAges 18 Years - 35 YearsAllUniversidade Federal do Ceara
NCT06502795 on ClinicalTrials.gov ↗
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In plain words

What the trial is, and whether it could suit you

Introduction: Patellofemoral pain (PFP) is characterized by anterior, retropatellar and/or peripatellar pain during activities such as running, squatting, kneeling, or prolonged sitting. This condition affects approximately 25% of the general population. Given its complex and multifactorial etiology, PFP presents a significant treatment challenge. All clinical practice guidelines recommend strengthening the quadriceps femoris muscle as a key component in the management of PFP. However, exercises aimed at strengthening the quadriceps place considerable stress on the patellofemoral joint and are often poorly tolerated by patients. Clinicians commonly employ a conservative strategy that restricts open kinetic chain knee extension exercises to a limited range of 90° to 45° of knee flexion and closed kinetic chain exercises to 0° to 45°. Yet, restricting the range of motion may result in subo

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📋 Eligibility rules (as published)
Inclusion Criteria: * Individuals aged between 18 and 35 years. * Diagnosis of patellofemoral pain characterized by peri- or retropatellar pain. * Pain reproduced in at least two of the following activities: ascending or descending stairs, squatting, kneeling, prolonged sitting, jumping, running, or palpation of the medial and/or lateral facets of the patella. * Insidious onset of symptoms. * Symptoms duration of at least three months. * Minimum score of three on the numerical pain rating scale (NPRS) in the past week. * Maximum score of 86 points on the Anterior Knee Pain Scale (AKPS) * In cases of bilateral pain, the more symptomatic knee will be included. Exclusion Criteria: * History of surgery and/or fractures in the lower limb joints. * Other knee joint-related injuries such as meniscal tears, ligament injuries. * History of patellar subluxation or dislocation. * Signs of osteoarthritis. * Patellar and quadriceps tendinopathy. * Osgood-Schlatter syndrome. * Presence of knee joint edema. * Contraindications to resistance exercises informed by a physician. * Corticosteroid injection within the last 6 months.
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What it tests

  • Protected Range Quadriceps Strengthening group
  • Patient-Guided Range Quadriceps Strengthening group
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Where

1 site
Physiotherapy Department, Federal University of Ceará
Fortaleza, Brazil
🤝 Taking part is your choice, and you can leave at any time. Only the trial team can confirm you are eligible — always decide together with your own doctor.
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