Clinical Subgroups in Patellofemoral Pain Syndrome

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

45 participants

Study Classification

OBSERVATIONAL

Study Start Date

2017-09-01

Study Completion Date

2018-12-01

Brief Summary

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Patellofemoral pain syndrome (PFPS) is a multifactorial pathology characterized by diffuse retropatellar and peripatellar pain in the knee joint, exacerbated by overloading activities on the patellofemoral joint. However, this disease showed high degree of patients not responsive to therapeutic strategies. This condition occurred because several factors is related to disease such as: (1) proximal factors (involving trunk and hip), (2) local factors (surrounding and or within the patellofemoral joint) and (3) distal factors (involving ankle and foot). Thus, the identification of clinical subgroups based in anatomic changes (proximal, local and distal factors) is a recent strategy that could help in the therapeutic strategies focused on the etiology of the disease, improve responsiveness to treatment, clinical and functional benefits.

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Detailed Description

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Conditions

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Patellofemoral Pain Syndrome

Study Design

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Observational Model Type

CASE_CONTROL

Study Time Perspective

RETROSPECTIVE

Study Groups

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Patellofemoral pain syndrome with changes in proximal factors

Neuromuscular evaluation

Intervention Type DIAGNOSTIC_TEST

(1) Muscle trunk endurance test; (2) Hip isometric strength (abductor, lateral rotation, extension); (3) Knee extensor isometric strength; (4) unilateral squat; (5) navicular drop test; (6) muscle architecture at rest of gluteus medius, gluteus maximus,vastus lateralis, vastus medialis and rectus femoris; (7) muscle activation during unilateral squat (gluteus and quadriceps muscles); (8) pennation angle of obliques vastus medialis; (9) medial patellofemoral ligament length; (10) knee pain.

Patellofemoral pain syndrome with changes in local factors

Neuromuscular evaluation

Intervention Type DIAGNOSTIC_TEST

(1) Muscle trunk endurance test; (2) Hip isometric strength (abductor, lateral rotation, extension); (3) Knee extensor isometric strength; (4) unilateral squat; (5) navicular drop test; (6) muscle architecture at rest of gluteus medius, gluteus maximus,vastus lateralis, vastus medialis and rectus femoris; (7) muscle activation during unilateral squat (gluteus and quadriceps muscles); (8) pennation angle of obliques vastus medialis; (9) medial patellofemoral ligament length; (10) knee pain.

Patellofemoral pain syndrome with changes in distal factors

Neuromuscular evaluation

Intervention Type DIAGNOSTIC_TEST

(1) Muscle trunk endurance test; (2) Hip isometric strength (abductor, lateral rotation, extension); (3) Knee extensor isometric strength; (4) unilateral squat; (5) navicular drop test; (6) muscle architecture at rest of gluteus medius, gluteus maximus,vastus lateralis, vastus medialis and rectus femoris; (7) muscle activation during unilateral squat (gluteus and quadriceps muscles); (8) pennation angle of obliques vastus medialis; (9) medial patellofemoral ligament length; (10) knee pain.

Interventions

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Neuromuscular evaluation

(1) Muscle trunk endurance test; (2) Hip isometric strength (abductor, lateral rotation, extension); (3) Knee extensor isometric strength; (4) unilateral squat; (5) navicular drop test; (6) muscle architecture at rest of gluteus medius, gluteus maximus,vastus lateralis, vastus medialis and rectus femoris; (7) muscle activation during unilateral squat (gluteus and quadriceps muscles); (8) pennation angle of obliques vastus medialis; (9) medial patellofemoral ligament length; (10) knee pain.

Intervention Type DIAGNOSTIC_TEST

Eligibility Criteria

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Inclusion Criteria

* Peripatellar or retropatellar pain in at least two of the following situations: squatting, running, kneeling, jumping, climbing or descending stairs and sitting for a prolonged period of time for at least three months.