Clinical Subgroups in Patellofemoral Pain Syndrome
- Conditions
- Patellofemoral Pain Syndrome
- Interventions
- Diagnostic Test: Neuromuscular evaluation
- Registration Number
- NCT03201133
- Lead Sponsor
- Federal University of Rio Grande do Sul
- Brief Summary
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.
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- Female
- Target Recruitment
- 45
- 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.
- Engaged in systematic exercise with focus on lower limb in the last six months and Had an injury to the hip and ankle joint in the last 12 months.
Study & Design
- Study Type
- OBSERVATIONAL
- Study Design
- Not specified
- Arm && Interventions
Group Intervention Description Patellofemoral pain syndrome with changes in distal factors Neuromuscular evaluation - Patellofemoral pain syndrome with changes in local factors Neuromuscular evaluation - Patellofemoral pain syndrome with changes in proximal factors Neuromuscular evaluation -
- Primary Outcome Measures
Name Time Method Muscular strength tests of hip and knee muscles. 1 day Isometric torque of knee extensor muscles, hip abductor, extension and medial rotation muscles through hand-held dynamometer tests will be performed to create clinical subgroups after cluster analysis for a focused intervention in the second step.
Muscle thickness measures 1 day Muscle thickness (in millimeters) of vastus lateralis, vastus medialis and rectus femoris muscle. Muscle thickness of gluteus medius, maximus and peroneus muscle through ultrasound equipment. Tests Test will be performed to create clinical subgroups after cluster analysis for a focused intervention in the second step.
Muscle activation of knee, hip and foot muscles 1 day Muscle activation measures of quadriceps, gluteus maximus, gluteus medius and peroneus muscles during unilateral squat through surface electromyography. Tests will be performed to create clinical subgroups after cluster analysis for a focused intervention in the second step.
Kinematics during unilateral squat 1 day Pelvis, hip, knee and ankle angular displacement during unilateral squat through kinematics analysis. Tests will be performed to create clinical subgroups after cluster analysis for a focused intervention in the second step.
Fascicle length measures 1 day Fascicle length (in milimeters) of vastus lateralis, vastus medialis and rectus femoris muscle through ultrasound equipment. Tests Test will be performed to create clinical subgroups after cluster analysis for a focused intervention in the second step.
Pennation angle measures 1 day Pennation angle (in °) of vastus lateralis, vastus medialis and rectus femoris muscle through ultrasound equipment. Tests Test will be performed to create clinical subgroups after cluster analysis for a focused intervention in the second step.
- Secondary Outcome Measures
Name Time Method
Trial Locations
- Locations (1)
Exercise Research Laboratory
🇧🇷Pôrto Alegre, Rio Grande Do Sul, Brazil