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Relationship Between Knee Pain And Proprioception During Single Leg Squat In Patellofemoral Pain Syndrome (PPS)

6 juin 2026 mis à jour par: Esraa Adel El-sayed Bastawi, Cairo University
This study will be conducted to investigate the relationship between knee joint pain intensity and joint position sense accuracy in patients with patellofemoral pain syndrome (PFPS) in a single-leg squat position.

Aperçu de l'étude

Statut

Pas encore de recrutement

Les conditions

Intervention / Traitement

Description détaillée

Patellofemoral pain syndrome (PFPS) is one of the most prevalent knee problems that interfere with everyday activities and function. The prevalence of Patellofemoral pain syndrome varies, affecting between 22% and 40% of the general population and up to 70% in athletes engaged in running and jumping sports, with a higher incidence reported among females and individuals aged 15-30 years.Impaired proprioception and balance are recognized as intrinsic components in the etiology of PFPS, and research shows that PFPS patients have severe abnormalities in these domains when compared to healthy controls, particularly when performing dynamic tasks. The impaired balance and proprioception are hypothesized to result from altered neuromuscular control, decreased muscle strength, or changes in sensory feedback, which are crucial for maintaining stability and control over movements.The correlation between proprioceptive deficits and PFPS highlights the significance of including balance and proprioception-focused interventions in the PFPS treatment plan, as these can greatly enhance pain, function, and quality of life for those who are impacted. Addressing these deficits may not only improve symptoms associated with PFPS but also reduce the risk of further injury and enhance overall knee function.

To the best of the authors' knowledge, no previous study has specifically correlated knee JPS in a WB position (single-leg squat position) with PFPS. Thus, findings of this study might enhance the evidence-based clinical decisions made by the physical therapists regarding the management of PFPS, justifying for the patients the value of integrating proprioceptive and motor control training alongside traditional strengthening programs to improve functional outcomes. By addressing the neuromuscular factors linked to pain, rehabilitation strategies can become more precise and function-oriented, ultimately improving quality of life and physical performance.

Type d'étude

Observationnel

Inscription (Estimé)

82

Contacts et emplacements

Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.

Coordonnées de l'étude

Critères de participation

Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.

Critère d'éligibilité

Âges éligibles pour étudier

  • Adulte

Accepte les volontaires sains

Non

Méthode d'échantillonnage

Échantillon non probabiliste

Population étudiée

eighty two patellofemoral pain syndrome had Positive eccentric step test,Anterior or retropatellar knee pain present during at least two of the following - ascending/descending stairs, hopping/running, squatting, kneeling and prolonged sitting and Pain on palpation of patellar facets. their ages between 18-35 years old.

La description

Inclusion Criteria:

  • Age ranges from 18-35 years
  • BMI ranges from 18-25 kg/m2
  • Positive eccentric step test
  • Anterior or retropatellar knee pain present during at least two of the following - ascending/descending stairs, hopping/running, squatting, kneeling and prolonged sitting
  • Pain on palpation of patellar facets
  • Insidious onset of symptoms vague and non-localized pain at anterior of knee for at least three months ( unrelated to a traumatic incident.

Exclusion Criteria:

  • Knee pain is more than 6 score on ANPRS.
  • History of traumatic patellar dislocation or subluxation
  • Osteoarthritis in the knee, ankle or hip joints, injury of cruciate ligaments or menisci
  • Previous orthopedic disorders or neurologic deficit of the lower limbs, any sensory problems, leg length discrepancy, neuromuscular disease like multiple sclerosis
  • Athletic patients.

Plan d'étude

Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.

Comment l'étude est-elle conçue ?

Détails de conception

Cohortes et interventions

Groupe / Cohorte
Intervention / Traitement
patellofemoral pain syndrome patients
Eighty-two patellofemoral pain syndrome patients will be included in this group. their ages range from 18 to 35 years old, with body mass index 18-25 kg/cm2
Autre: patellofemoral pain syndrome patients
eighty two patellofemoral pain syndrome had Positive eccentric step test,Anterior or retropatellar knee pain present during at least two of the following - ascending/descending stairs, hopping/running, squatting, kneeling and prolonged sitting and Pain on palpation of patellar facets. their ages between 18-35 years old.

Que mesure l'étude ?

Principaux critères de jugement

Mesure des résultats
Description de la mesure
Délai
pain intensity
Délai: up to one day
nemerial pain rating scale will be used to assess pain intensity. It comprises of 11 point ''horizontal scale'' of 0-10 in Arabic numerals anchored by the two ends, the left (0 indicating no pain at all) and right (10 indicating the worst ).
up to one day
knee disability
Délai: up to one day
The Arabic version of the Kujala patellofemoral pain scoring system is a questionnaire to assess the patient with PFP. It includes 13 points based on the following factors: presence of a limp, need for support, walking ability, stair climbing, squatting, running, jumping, prolonged sitting with knees flexed, pain, swelling, abnormal painful kneecap movement, atrophy of the thigh, and flexion deficiency. Each question has multiple answers with points reflecting the severity of symptoms and level of functional limitation. Each question is assigned a score of either up to 5 or 10, and the total score for the Kujala questionnaire is 100. The higher the score, the better the function
up to one day
knee joint position error (knee joint proprioception)
Délai: up to one day
Digital-goniometer will be used to assess joint position error.the digital-goniometer will be attached to the knee joint in the neutral knee position. The fixed arm will be placed in parallel to an imaginary line between the head of the fibula and the lateral malleolus. The movable arm will be placed in parallel to an imaginary line between the greater trochanter and the lateral condyle of the femur. The digital-goniometer will be zeroed when the subject is standing motionless in the anatomic position. To prevent slippage during knee joint motion, the end blocks will be adhered to the tested leg with double-sided adhesive tape and further secured in place with adhesive tape. Digital-goniometer readings records knee joint angular displacements relative to zero
up to one day

Collaborateurs et enquêteurs

C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.

Parrainer

Cairo University

Dates d'enregistrement des études

Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.

Dates principales de l'étude

Début de l'étude (Estimé)

1 juillet 2026

Achèvement primaire (Estimé)

20 novembre 2026

Achèvement de l'étude (Estimé)

20 novembre 2026

Dates d'inscription aux études

Première soumission

6 juin 2026

Première soumission répondant aux critères de contrôle qualité

6 juin 2026

Première publication (Réel)

11 juin 2026

Mises à jour des dossiers d'étude

Dernière mise à jour publiée (Réel)

11 juin 2026

Dernière mise à jour soumise répondant aux critères de contrôle qualité

6 juin 2026

Dernière vérification

1 juin 2026

Plus d'information

Termes liés à cette étude

Mots clés

Termes MeSH pertinents supplémentaires

Autres numéros d'identification d'étude

  • P.T.REC/012/006507

Informations sur les médicaments et les dispositifs, documents d'étude

Étudie un produit pharmaceutique réglementé par la FDA américaine

Non

Étudie un produit d'appareil réglementé par la FDA américaine

Non

Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .

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