Vastus Medialis Obliquus Atrophy: Does It Exist in Patellofemoral Pain Syndrome?
Quadriceps atrophy and in particular atrophy of the vastus medialis obliquus (VMO) muscle have been frequently related with patellofemoral pain syndrome (PFPS), despite very little objective evidence. HYPOTHESIS: Patients with PFPS exhibit atrophy of the VMO in comparison with healthy controls. Forty-six patients with PFPS and 30 healthy control persons with similar age, gender, body [...]
A Comparison of Hip Strength Between Sedentary Females With and Without Patellofemoral Pain Syndrome.
The objective of this study was to compare the hip strength of sedentary females with either unilateral or bilateral patellofemoral pain syndrome (PFPS) to a control group of sedentary females of similar demographics without PFPS. Hip muscle weakness has been suggested as an important factor in the etiology of young female athletes with PFPS. This [...]
The Efficacy of Foot Orthoses in the Treatment of Individuals with Patellofemoral Pain Syndrome: A Systematic Review
Patellofemoral pain syndrome (PFPS) is a highly prevalent condition, often reducing functional performance and being linked to osteoarthritis development later in life. Prescribing foot orthoses is often advocated, although the link between foot mechanics and PFPS development remains unclear. This systematic review was conducted to summarize and critique the existing evidence for the efficacy of [...]
McConnell taping shifts the patella inferiorly in patients with patellofemoral pain: a dynamic magnetic resonance imaging study.
The purpose of this study was to quantify the changes in the 6-degrees-of-freedom patellofemoral kinematics due to taping in patients with PFPS. Fourteen volunteers (19 knees) who were diagnosed with patellofemoral pain that was present for a year or longer were included. Each knee had to meet at least 1 of the following inclusion criteria: [...]
Do females with patellofemoral pain have abnormal hip and knee kinematics during gait?
The objective of this study was to test the hypothesis that females with patellofemoral pain (PFP) have increased hip adduction, hip medial rotation, and knee valgus (medial collapse) during the stance phase of gait. Twenty subjects with PFP and 20 pain-free subjects participated. Subjects underwent three-dimensional motion analysis during free speed and fast speed walking. [...]
The Influence of Abnormal Hip Mechanics on Knee Injury: A Biomechanical Perspective
During the last decade, there has been a growing body of literature suggesting that proximal factors may play a contributory role with respect to knee injuries. A review of the biomechanical and clinical studies in this area indicated that impaired muscular control of the hip, pelvis, and trunk can affect tibiofemoral and patellofemoral joint kinematics [...]
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