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

6 de junio de 2026 actualizado por: 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.

Descripción general del estudio

Estado

Aún no reclutando

Descripción detallada

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.

Tipo de estudio

De observación

Inscripción (Estimado)

82

Contactos y Ubicaciones

Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.

Estudio Contacto

  • Nombre: esraa el-sayed, master
  • Número de teléfono: 01158527892
  • Correo electrónico: esraabastawi@gmail.com

Criterios de participación

Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.

Criterio de elegibilidad

Edades elegibles para estudiar

  • Adulto

Acepta Voluntarios Saludables

No

Método de muestreo

Muestra no probabilística

Población de estudio

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.

Descripción

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 de estudios

Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.

¿Cómo está diseñado el estudio?

Detalles de diseño

Cohortes e Intervenciones

Grupo / Cohorte
Intervención / Tratamiento
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
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.

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Medida Descripción
Periodo de tiempo
pain intensity
Periodo de tiempo: 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
Periodo de tiempo: 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)
Periodo de tiempo: 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

Colaboradores e Investigadores

Aquí es donde encontrará personas y organizaciones involucradas en este estudio.

Patrocinador

Fechas de registro del estudio

Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados ​​por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.

Fechas importantes del estudio

Inicio del estudio (Estimado)

1 de julio de 2026

Finalización primaria (Estimado)

20 de noviembre de 2026

Finalización del estudio (Estimado)

20 de noviembre de 2026

Fechas de registro del estudio

Enviado por primera vez

6 de junio de 2026

Primero enviado que cumplió con los criterios de control de calidad

6 de junio de 2026

Publicado por primera vez (Actual)

11 de junio de 2026

Actualizaciones de registros de estudio

Última actualización publicada (Actual)

11 de junio de 2026

Última actualización enviada que cumplió con los criterios de control de calidad

6 de junio de 2026

Última verificación

1 de junio de 2026

Más información

Términos relacionados con este estudio

Otros números de identificación del estudio

  • P.T.REC/012/006507

Información sobre medicamentos y dispositivos, documentos del estudio

Estudia un producto farmacéutico regulado por la FDA de EE. UU.

No

Estudia un producto de dispositivo regulado por la FDA de EE. UU.

No

Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .

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