Effect of muscle strengthening on perceived pain and static knee angles in young subjects with patellofemoral pain syndrome

Villafañe, Jorge Hugo; Bissolotti, Luciano; Négrini, Stefano

doi:10.12965/jer.1938224.112

Cited by 7 publications

(6 citation statements)

References 26 publications

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“…They were recruited from the waiting list in Rheumatology and Rehabilitation Department. The initial diagnosis was established combining medical records by CT or MRI and the presence of anterior knee pain [ 14 , 18 ]. Patients were included in this study if the following criteria were fulfilled: onset of pain longer than 3 months; positive clinical signs of PFPS (i.e., retro patellar pain, crepitation, pain in patellar grinding, direct patellar compression); no history of physical therapy.…”

Section: Methodsmentioning

confidence: 99%

“…The exclusion criteria were previous knee surgery, previous meniscal or ligamentous injuries, or musculoskeletal disorders. Subjects with a lower limbs dissymmetry, with cardiac or vision dysfunctions, or neurologic (whether central or peripheral) which can influence quadriceps circumference, were also excluded from the present study [ 14 ]. All participants were subjected to MRI and U/S studies of the anterior compartment of the thigh with all experimental procedures conducted in the physical therapy research lab of the hospital from 2017 to 2019 (Retrospective study).…”

Section: Methodsmentioning

confidence: 99%

“…radiographic stage, cartilage loss) and knee symptoms (pain and physical function) [ 12 , 13 ]. Villafañe et al [ 14 ] found that muscle strengthening addressed to the symptomatic knee reduced pain.…”

Section: Introductionmentioning

confidence: 99%

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Morphometric analysis of vastus medialis oblique muscle and its influence on anterior knee pain

et al. 2021

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Healthy knees require full range squatting movements. Vastus medialis (VM) muscle regulates and adjusts the extensor apparatus that influences the patellofemoral function. This work was designed to investigate the anatomy and morphometry of vastus medialis oblique (VMO) muscle by widely used imaging techniques and investigate how VMO muscle participates in anterior knee pain. Ten dissected cadaveric specimens were examined, focusing on fiber orientations, origin, insertions and nerve supply of VMO muscle. Magnetic resonance imaging and ultrasound of VMO muscle were recorded. Anatomical cross-sectional areas of VMO muscle were determined in painless and painful knees and statistically analyzed. In cadaveric specimens, there was distinct separation between VM longus and VMO (change in fiber angle or fibrofascial plane). VMO inserted directly into the medial proximal margin of the patella, capsule of the knee joint and continuous with the patellar tendon. Separate branch of femoral nerve run along the anteromedial border of the muscle. Anatomical cross-sectional area was significantly decreased in painful knee by-17.2%±11.0% at lower end of shaft of femur,-21.1%±6.0% at upper border of patella,-36.7%±11.0% at mid-patellar level. VMO is distinct muscle within quadriceps femoris group. VMO muscle would track the patella medially and participate in last phase of knee extension. Assessment of the VMO muscle anatomical cross-sectional area by ultrasonography may constitute promising and reliable tool to evaluate patellofemoral pain syndrome staging.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Morphometric analysis of vastus medialis oblique muscle and its influence on anterior knee pain

et al. 2021

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“…A large body of evidence indicates that clinicians could influence the strength, flexibility, and stability deficits in patients with PFP through a targeted exercise program [16][17][18][19]. A recent study reported that, although 34% of patients responded to a general multimodal exercise program, over 70% of patients recovered after targeted treatment based on their individual deficits [20].…”

Section: Introductionmentioning

confidence: 99%

Effects of a Targeted Exercise Program on Inter-Leg Asymmetries in Patients with Patellofemoral Pain

et al. 2021

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Patellofemoral pain (PFP) is often associated with impaired muscle strength, flexibility, and stability. It has been suggested that inter-leg asymmetries have an important role in increasing the risk of musculoskeletal injuries, including PFP. Thus, the aim of this study was to identify significant asymmetries and determine the effects of a symmetry targeted exercise program in patients with PFP. Eighteen patients aged 13 to 54 years (24.17 ± 12.52 years) with PFP participated in this study. Strength, flexibility and stability outcomes of the trunk, hip, knee and ankle muscles were assessed. A single-group pretest–posttest design was used to assess changes in inter-leg and agonist–antagonist asymmetries resulting from the 8-week period of the supervised exercise program. Results indicated a significant improvement in inter-leg symmetry regarding bilateral stance in a semi-squat position (p = 0.020, d = 0.61, df = 17) and ankle plantarflexion (p = 0.003, d = 0.32, df = 17) and ankle dorsiflexion strength (p < 0.001, d = 0.46, df = 17). In addition, the ratio of ankle dorsiflexion/plantarflexion (p = 0.036, d = 1.14, df = 17) and hip extension/flexion (p = 0.031, d = 0.94, df = 16) changed significantly during the intervention period. To our knowledge, this was the first study to evaluate inter-leg asymmetries resulting from a period of a supervised exercise program. The results indicate that an exercise program focusing on individual asymmetries may influence specific deficits and contribute to better rehabilitation outcomes.

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“…Compensatory muscular adaptations are observed in such patients due to inefficient muscle activities which leads to muscle weakness, joint instability and altered limb loading where gait alterations are produced by maladaptive musculoskeletal responses [11,18]. Vastus Medialis Obliquus (VMO) muscle plays an important role in controlling the contact area and pressure distribution in patello-femoral joint [3]. It originates from medial side of the femur and inserts in quadriceps tendon.…”

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confidence: 99%

Efficacy of Aquatic Therapy and VMO Strengthening in Patellofemoral Arthritis

Nikam¹,

Yadav²

2022

IJPR

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Background: Arthritis is inflammation of joints which leads to pain and stiffness that worsens with age. Patellofemoral arthritis affects the underside of the patella and the channel-like groove in the femur that the patella rests in. PFPS is an overuse injury in which anterior knee pain is present. The patient with patellofemoral arthritis has kneecap pain, stiffness and often swelling in the front part of the knee that typically worsens when walking on inclined terrain, climbing stairs, squatting. The patients with patellofemoral arthritis have reduced functional ability due to pain. It is important to increase the strength of Vastus Medialis Oblique Muscle which helps in stabilizing the patella during knee joint movements in order to reduce the pain. Aquatic physical therapy is considered as a safe and effective treatment program for managing knee OA as it contribute to the increase in the pain threshold and it also decreases the joint overload and pain symptoms and improves functionality and quality of life. Objective: To compare the effect of aquatic therapy and Vastus Medialis Oblique strengthening on pain and functional ability in patellofemoral arthritis (PFA). Materials and methods: An experimental study was conducted on total of 30 subjects on the basis of inclusion and exclusion criteria with 15 subjects in group A for VMO strengthening and 15 subjects in group B for aquatic therapy exercise. Outcome measures used were Visual Analogue Scale (VAS) and Anterior Knee Pain Scale (AKPS). The protocol was conducted for 5 weeks, 3 days a week. Results: A total of 30 patients between the age of 40-65 years were included. Statistically it shows that there was extremely significant difference (p<0.0001) between pre intervention assessment and post intervention assessment. But the subjects treated with aquatic therapy shows more significant difference than the subjects treated with VMO strengthening program. Conclusion: The present study concludes that the aquatic therapy program is more effective than the VMO strengthening program which showed more reduction in pain and increase in functional ability in PFA. KEY WORDS: Patellofemoral arthritis, Patellofemoral pain syndrome, knee pain, VMO strengthening, Aquatic therapy, Visual Analogue Scale, Anterior Knee Pain Scale.

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Effect of muscle strengthening on perceived pain and static knee angles in young subjects with patellofemoral pain syndrome

Cited by 7 publications

References 26 publications

Morphometric analysis of vastus medialis oblique muscle and its influence on anterior knee pain

Morphometric analysis of vastus medialis oblique muscle and its influence on anterior knee pain

Effects of a Targeted Exercise Program on Inter-Leg Asymmetries in Patients with Patellofemoral Pain

Efficacy of Aquatic Therapy and VMO Strengthening in Patellofemoral Arthritis

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