The Role of Quadriceps Contraction in Patellar Repositioning-a Computed Tomography Study
Data Collection
Collected from past medical records and data - RetrospectiveJoint Diseases
+ Musculoskeletal Diseases
+ Patellofemoral Pain Syndrome
Case-Only
Examining characteristics of individuals with a disease in order to identify genetic or environmental factors contributing to the condition.Summary
Study start date: August 1, 2006
Actual date on which the first participant was enrolled.Background Previous studies have a great discrepancy concerning the effects of quadriceps contraction on patellar lateral displacement and tilt in patients with patellofemoral pain syndrome. This discrepancy may be caused by lack of information regarding to classifications of patellofemoral alignment under quadriceps relaxed. We hypothesized quadriceps contraction has different effects on each type of patellofemoral malalignment. We expect to recruit 150 subjects with patellofemoral pain syndrome to participate in this study. All patients underwent computed tomography imaging of symptomatic knees, with and without quadriceps muscle contraction in 0°, 15° and 30° of knee flexion. Patellar lateral condyle index and patellar tilt angles of Sasaki and modified Fulkerson were measured to investigate the effect of quadriceps contraction on patellar repositioning.
Protocol
This section provides details of the study plan, including how the study is designed and what the study is measuring.150 patients to be enrolled
Total number of participants that the clinical trial aims to recruit.Case-only
Eligibility
Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.Any sex
Biological sex of participants that are eligible to enroll.From 20 to 50 Years
Range of ages for which participants are eligible to join.Healthy volunteers not allowed
If individuals who are healthy and do not have the condition being studied can participate.Conditions
Pathology
Criteria
Inclusion Criteria: * The inclusion criteria for patients with PFPS were suffering from pain with at least two kinds of knee-flexing activities such as: * sitting * getting up from sitting * walking upstairs or downstairs * squatting * getting up from squatting * running * kneeling * jumping Exclusion Criteria: The exclusion criteria included: * The presence of any major medical disease * Rheumatoid arthritis, gouty arthritis * Recent history (within 3 months) of knee surgery * Image findings of osteoarthritis * Any deformity of lower limbs
Study Centers
These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.This study has 1 location