The relationship between ankle dorsiflexion range of motion,frontal plane projection angle,and patellofemoral pain syndrome |
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| Affiliation: | 1. Department of Musculoskeletal Disorders & its Surgery, Faculty of Physical Therapy, Cairo University, Egypt;2. Orthopedic Surgery and Traumatology Department, Faculty of Medicine, Cairo University, Egypt;1. Department of Orthopaedic Surgery, Singapore General Hospital, Outram Rd, 169608, Singapore;2. Yong Loo Lin School of Medicine, National University of Singapore, 10 Medical Dr, 117597, Singapore;3. Health Services Research Unit, Singapore General Hospital, Outram Rd, 169608, Singapore;4. Consultant, Head of Foot and Ankle Service, Singapore;1. Department of Trauma and Reconstructive Surgery, BG Unfallklinik Tuebingen, Eberhard Karls University, Tuebingen, Germany;2. Department of Trauma Surgery, University Medical Center Regensburg, Regensburg, Germany;3. Department of Psychosomatic Medicine, University Medical Center Regensburg, Regensburg, Germany;1. Department of Orthopedic Surgery, Hospital Clinic, Barcelona, Spain;2. Hospital de la Florida, Santiago, Chile;1. Hospital for Special Surgery, 532 East 72nd Street, 5th Floor, New York, NY 10021, United States;2. Hospital for Special Surgery, 420 E 72nd St Ground Floor, New York, NY 10021, United States |
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| Abstract: | ![]()
BackgroundAnkle range of motion abnormalities have been often linked with alteration in knee kinematics leading to the development of patellofemoral pain syndrome (PFPS). Literature exploring the relationship between ankle dorsiflexion range of motion (DF ROM) and knee kinematics during functional tasks is scanty. This study aims to assess the relation between ankle DF ROM and frontal plane projection angle (FPPA), one of the knee kinematic variables, in individuals with and without PFPS during a step-down test.MethodsThis is a case-control study in which seventy PFPS patients and other 70 asymptomatic control subjects had their ankle DF ROM measured using an inclinometer with the knee flexed and extended. Their FPPA angles were measured using Kinovea software while doing the step-down test.ResultsWhen the two groups were compared, ankle DF ROM measured with the knee flexed was higher in the control group (33.15 ± 4.96) than in the PFPS group (30.20 ± 6.93) (p = 0.03). In both the PFPS group and the control group, the correlation between FPPA and ankle DF ROM with the knee flexed was statistically insignificant (p = 0.075 and 0.323 respectively).ConclusionDecreased ankle DF ROM can be one of the contributing factors to the development of PFPS in the context of greater dynamic knee valgus. |
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| Keywords: | Patellofemoral pain Ankle dorsiflexion Frontal plane projection angle Step-down test PFPS" },{" #name" :" keyword" ," $" :{" id" :" key0030" }," $$" :[{" #name" :" text" ," _" :" Patellofemoral pain syndrome DF ROM" },{" #name" :" keyword" ," $" :{" id" :" key0040" }," $$" :[{" #name" :" text" ," _" :" Dorsiflexion range of motion FPPA" },{" #name" :" keyword" ," $" :{" id" :" key0050" }," $$" :[{" #name" :" text" ," _" :" Frontal plane projection angle BMI" },{" #name" :" keyword" ," $" :{" id" :" key0060" }," $$" :[{" #name" :" text" ," _" :" Body mass indexes ASIS" },{" #name" :" keyword" ," $" :{" id" :" key0070" }," $$" :[{" #name" :" text" ," _" :" Anterior superior iliac spine |
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