2,082 results match your criteria: "Patellofemoral Syndrome"

Biomechanical and biological factors of sexual dimorphism in anterior knee pain: Current concepts.

J ISAKOS

August 2024

Department of Orthopaedic Surgery, Stanford University School of Medicine, 430 Broadway, Pavilion C, Redwood City, CA 94063, USA. Electronic address:

Article Synopsis
  • Female gender significantly impacts various risk factors for anterior knee pain (AKP), including anatomical, hormonal, and biomechanical elements, but understanding how these factors interact is lacking.
  • Women typically have anatomical disadvantages, such as smaller patellae and different muscle compositions, while men may have protective advantages like stronger hip muscles.
  • The review emphasizes the need for tailored prevention and treatment approaches based on gender-specific risk factors, even though all individuals may exhibit a range of these factors.
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Objective: To compare the effectiveness of adjunct treatments combined with exercise to exercise alone in people with patellofemoral pain (PFP) and explore the quality of intervention descriptions in randomised controlled trials (RCTs).

Design: Systematic review.

Data Sources: Seven databases were searched in November 2023.

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Article Synopsis
  • - The study investigates the link between muscle thickness and strength in the lower limb and knee alignment during single-leg squats in women suffering from patellofemoral pain (PFP).
  • - Findings show a negative association between the muscle thickness of the Gluteus Maximus and Tibialis Anterior with dynamic knee valgus, though strength did not correlate significantly.
  • - The authors conclude that muscle thickness alone is only weakly related to lower limb alignment, indicating that other factors may be involved in addressing alignment issues in women with PFP.
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Introduction: Patellofemoral Pain (PFP) is a common dysfunction that can compromise the performance of daily activities. Neuromuscular electrical stimulation (NMES) has been proposed as a complementary tool in the therapeutic approach.

Objective: To analyze the effects of adding NMES to therapeutic exercises in women with PFP.

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Article Synopsis
  • - The study investigates the biomechanics of males aged 20-39 with patellofemoral pain (PFP) compared to pain-free males, focusing on their movement during forward step-down (StDn) and single-leg squat (SLSq) exercises.
  • - Results showed that males with PFP had lower peak knee adduction angles and demonstrated increased hip and pelvis range of motion during StDn, while showing reduced or similar ROM during SLSq.
  • - The findings suggest that StDn may be a helpful clinical test for assessing movement patterns in males with PFP, indicating potentially abnormal biomechanics in their movements.
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To analyze the lower limb muscle strength characteristics of amateur runners with patellofemoral pain (PFP). Sixty amateur runners (30 in the knee pain group, 30 in the control group) underwent measurements of hip abduction strength, knee extension strength, and knee flexion strength. Additionally, the hamstring/quadriceps ratio and limb strength symmetry index were calculated for all participants.

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Article Synopsis
  • The study aimed to evaluate the effectiveness of Kinesio tape in treating patellofemoral pain syndrome (PFPS) through a meta-analysis of existing literature.
  • Fourteen randomized controlled studies were analyzed, showing that Kinesio tape provided significant short-term, medium-term, and long-term pain relief compared to control groups.
  • However, Kinesio taping did not produce a notable improvement in knee function or symptoms based on specific assessment scores.
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Background: Patellar instability is frequently encountered in patients with Ehlers-Danlos syndrome (EDS). The clinical outcomes of isolated medial patellofemoral ligament reconstruction (MPFLR) for patellar instability in patients with EDS are unknown.

Purpose: To evaluate midterm clinical outcomes of isolated MPFLR for patellar instability in patients with EDS and factors affecting these outcomes.

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Article Synopsis
  • Patellofemoral pain syndrome (PFPS) is a common cause of knee pain, affecting both adolescents and active adults during activities like stair climbing and squatting.
  • A meta-analysis of three studies indicates that osteopathic manipulative treatment (OMT) significantly reduces pain in PFPS patients, with a mean difference of -3.95 on a pain scale.
  • Despite the promising results for OMT, high variability in study outcomes suggests that more research is necessary to fully validate its effectiveness in treating PFPS.
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Article Synopsis
  • Total knee arthroplasty (TKA) is an effective surgery for patients with severe knee osteoarthritis, but there's limited information on outcomes for those with Ehlers-Danlos syndrome (EDS).
  • This study analyzed a large database from 2009 to 2020, comparing complication rates post-TKA in EDS patients to matched controls based on age, sex, and other health issues.
  • Results indicated that EDS patients had a significantly higher rate of wound complications within 90 days post-surgery, though other complications did not differ significantly between the two groups.
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Neuromuscular and trunk control mediate factors associated with injury in fatigued runners.

J Biomech

June 2024

School of Health and Rehabilitation Sciences, The Ohio State University, Columbus, OH, United States.

Article Synopsis
  • The study investigated how fatigue impacts injury risk factors and neuromuscular control in recreational runners, focusing on peak vertical instantaneous loading rates (pVILR) linked to tibial stress fractures and peak hip adduction (pHADD) related to knee injuries.
  • Data were collected from 11 runners during a fatiguing run, measuring changes in muscle coactivation, trunk control, and kinematic/kinetic variables before and after fatigue.
  • Results showed that fatigue significantly increased pHADD and pVILR, decreased coactivation around the knee and ankle, and increased lateral trunk lean, suggesting that these changes may raise the risk of injuries like tibial stress fractures, warranting further research into fatigue-related injuries
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Article Synopsis
  • * Recent research shows that Bone Marrow Aspirate Concentrate (BMAC) therapy, which leverages stem cells and growth factors, can significantly improve outcomes in patients with CMP resistant to standard treatments.
  • * A case study of a 36-year-old male with severe CMP revealed marked improvements in pain and function after BMAC therapy, suggesting its potential as a promising treatment option that warrants further investigation through larger clinical trials.
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Assessing quadriceps strength in patellofemoral pain patients: A study on the reliability and validity of a low-cost strain-gauge for clinical practice.

PLoS One

May 2024

Physical Activity, Sport, and Recreation (PhasRec) Research Focus Area, North-West University, Potchefstroom, North West Province, South Africa.

Background: Patellofemoral pain (PFP) is a common knee complaint affecting diverse populations both acutely and chronically. Quadriceps muscle weakness is one possible aetiology, but current devices for measuring muscle strength (isokinetic dynamometer [ID] and hand-held dynamometers [HHD]) are frequently too expensive (e.g.

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Relative Energy Deficiency in Sport (REDs) and knee injuries: current concepts for female athletes.

J ISAKOS

August 2024

Division of Sports, Shoulder and Elbow Surgery, Department of Orthopaedic Surgery, National University Hospital, NUHS Tower Block, Level 11, 1E Kent Ridge Road, 119288, Singapore.

Article Synopsis
  • * Females face a higher risk of knee injuries attributed to hormonal differences and anatomical factors, with those experiencing REDs being at an even greater risk for specific injuries like ACL tears.
  • * The review urges sports clinicians to be vigilant in assessing knee injuries in female athletes, emphasizing the importance of screening for and managing REDs to ensure comprehensive care.
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: Patellofemoral Pain Syndrome (PFPS) is prevalent among physically active individuals, highlighting the need for innovative treatment strategies beyond conventional physiotherapy. This study investigates the effectiveness of integrating flossing band therapy with standard physiotherapy, anticipating improved outcomes in pain reduction, functional ability, and patient satisfaction. A double-blinded randomized controlled trial involved 50 PFPS-diagnosed participants.

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Introduction: Hypermobility describes the movement of joints beyond normal limits. Whether hypermobility predisposes to patellar instability is yet to be established. We aimed to determine if joint hypermobility leads to an increased risk of patellar instability, and to evaluate outcomes of treatment for patellar instability in those who exhibit hypermobility.

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Objective: Clinicians treating patients with patellofemoral pain (PFP) rely on consensus statements to make the best practice recommendations in the absence of definitive evidence on how to manage PFP. However, the methods used to generate and assess agreement for these recommendations have not been examined. Our objective was to map the methods used to generate consensus-based recommendations for PFP and apply four novel questions to assess the rigour of consensus development.

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Background: Patellofemoral pain (PFP) is characterized by chronic pain in the anterior aspect of the knee during loading activities. Many studies investigating muscle morphology changes for individuals with PFP focus on the proximal joints, however, few studies have investigated muscles of the foot and ankle complex. This study aimed to explore the differences in peroneal muscle size and activation between individuals with PFP and healthy controls using ultrasound imaging in weight-bearing.

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Pain and disability were related to Y-balance test but not with proprioception acuity and single-leg triple-hop test in patients with patellofemoral pain: A cross-sectional study.

J Bodyw Mov Ther

April 2024

Rehabilitation Science Postgraduation Program - Augusto Motta University Centre (UNISUAM), Avenida Paris, 84, Bonsucesso, CEP 21041-020, Rio de Janeiro, RJ, Brasil Rio de Janeiro, Brazil; Physiotherapy Department, Federal Institute of Rio de Janeiro (IFRJ), Rua Carlos Wenceslau, 343, Realengo, CEP 21715-000, Rio de Janeiro, Brazil.

Article Synopsis
  • Patellofemoral pain is common among active individuals, impacting daily activities and possibly impairing movement due to altered proprioception.
  • The study included 48 patients, focusing on the relationship between their pain intensity, duration, disability, proprioception (measured through joint position sense), and physical performance in specific tests.
  • Results showed that while pain and disability affected balance performance (Y-Balance Test), they did not correlate with proprioceptive acuity or performance in the Single-Leg Triple-Hop Test.
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Purpose: The purpose of this study was to investigate whether double-level (femur + tibia) derotational osteotomy is superior to single-level femoral derotational osteotomy for recurrent patellar dislocation with severe femoral and tibial rotational deformities (femoral anteversion >30° and external tibial torsion >30°).

Methods: Between January 2015 and June 2020, a total of 115 knees with recurrent patellar dislocation treated with combined medial patellofemoral ligament reconstruction (MPFL-R) and derotational osteotomies were evaluated after a minimum follow-up of 2 years. Among these cases, 15 knees that underwent double-level derotational osteotomy were included in the double-level group, which was propensity-matched in a 1:2 ratio to a single-level group of patients who underwent single-level femoral derotational osteotomy (30 knees).

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Article Synopsis
  • The study evaluated the outcomes of medial patellofemoral ligament (MPFL) reconstruction using synthetic suture tape in kids with patellofemoral instability over a follow-up period from 2014 to 2022.
  • It involved 22 patients, 29 knees, and saw significant improvements in functional scores, with most patients reporting high satisfaction post-surgery despite a few complications.
  • The findings suggest MPFL reconstruction is effective, especially for pediatric patients with connective tissue disorders or previous unsuccessful surgeries, demonstrating good clinical outcomes and a manageable risk of complications.
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Article Synopsis
  • The study introduces the quadriceps-patella angle (QPA) as a new measure to assess the forces acting on the patella, which is important for diagnosing knee issues like patellofemoral instability and pain syndrome.
  • Researchers analyzed data from 350 patients who underwent knee MRIs between 2018-2020, focusing on various angles related to patellar alignment and their correlation with conditions such as chondromalacia.
  • Results indicated that patients with a lateral patellar tilt angle (LPTA) greater than 5° had higher frequencies of chondromalacia, while those with an LPTA less than 5° showed significantly more fad-pad edema.
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Article Synopsis
  • Patellofemoral pain (PFP) is a common knee injury in athletes, often recurring, with its cause linked to the position of the patella during knee extension.
  • The study examined the relationship between the position of the patella and the tension of various soft tissues around the knee in both patients with PFP and healthy individuals.
  • Findings revealed that increased tension in the vastus lateralis (VL) and iliotibial band (ITB) caused a more lateral patellar position during contraction, which could help inform strategies for preventing and treating PFP.
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Article Synopsis
  • The study investigated the potential link between cam femoroacetabular impingement syndrome (cam-FAIS) and chronic anterior knee pain (AKP) in patients who initially showed no structural abnormalities in their knees.
  • A review of 12 patients resistant to conservative treatment for AKP revealed that they later developed hip pain, leading to cam-FAIS diagnoses and subsequent surgical treatment.
  • Post-surgery, most patients experienced significant improvements in both knee and hip pain scores, indicating a strong association between cam-FAIS and AKP, especially in young individuals with normal knee imaging.
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