911 results match your criteria Patellofemoral Joint Syndromes


The role of viscosupplementation in patellar chondropathy.

Ther Adv Musculoskelet Dis 2021 13;13:1759720X211015005. Epub 2021 May 13.

Knee Surgery Division, Instituto de Ortopedia e Traumatologia, Hospital das clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil.

Patellar chondropathy has a high incidence in the general population, being more common in patients younger than 50 years, female and recreational athletes, and overweight and obese patients. The most common complaints are pain, limited mobility, crepitus, difficulty climbing and descending stairs, and joint instability, usually showing unsatisfactory results with anti-inflammatory, physiotherapy, rehabilitation, and many other conservative treatment methods. The presumed hyaluronic acid (HA) disease-modifying activity may include effects on cartilage degradation, endogenous HA synthesis, synoviocyte and chondrocyte function, and other cellular inflammatory processes. Read More

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Effects of proprioceptive exercises and strengthening on pain and functionality for patellofemoral pain syndrome in women: A randomized controlled trial.

J Clin Orthop Trauma 2021 Jul 19;18:94-99. Epub 2021 Apr 19.

Instituto de Pesquisa e Ensino do Hospital Ortopédico e Medicina Especializada (IPE - H O M E), Brasília, Distrito Federal, Brazil.

Objective: The objective of this study was to verify the effects of resisted and proprioceptive exercises program for the treatment of patients diagnosed with patellofemoral pain syndrome (PFPS).

Design Method: Randomized Controlled Trial - level of evidence, II.

Methods: Sixty female patients, clinically diagnosed with PFPS, were allocated into two experimental groups. Read More

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Effect of photobiomodulation in the patellofemoral pain syndrome; randomized clinical trial in young women.

J Bodyw Mov Ther 2021 Apr 12;26:263-267. Epub 2021 Jan 12.

Unioeste, Brazil. Electronic address:

Objective: patellofemoral pain syndrome (PFPS) is one of the most frequent musculoskeletal disorders in the knee joint, affecting mainly physically active adolescents and young adults; its main symptom is pain. Physiotherapy has several therapeutic modalities aimed at pain relief, among which are photobiomodulation (PBM). The aim of the study was to analyze the effects of using PBM in cluster form (Laser + LED) in patients with PFPS. Read More

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Effectiveness of local exercise therapy versus spinal manual therapy in patients with patellofemoral pain syndrome: medium term follow-up results of a randomized controlled trial.

BMC Musculoskelet Disord 2021 May 15;22(1):446. Epub 2021 May 15.

Bergman Clinics BV, Rijksweg 69, Naarden, GE, 1411, The Netherlands.

Background: Increasing evidence has shown benefits of spinal manipulations in patients with patellofemoral pain syndrome (PFPS). There is scarcity regarding medium term effects of spinal manual therapy on outcome measures in PFPS patients. Therefore, the aim of the present study was to compare the effectiveness of local exercise therapy and spinal manual therapy for knee pain, function and maximum voluntary peak force (MVPF) velocity of the quadriceps in PFPS patients. Read More

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Auxiliary Diagnostic Method for Patellofemoral Pain Syndrome Based on One-Dimensional Convolutional Neural Network.

Front Public Health 2021 16;9:615597. Epub 2021 Apr 16.

College of Physics and Information Engineering, Fuzhou University, Fuzhou, China.

Early accurate diagnosis of patellofemoral pain syndrome (PFPS) is important to prevent the further development of the disease. However, traditional diagnostic methods for PFPS mostly rely on the subjective experience of doctors and subjective feelings of the patient, which do not have an accurate-unified standard, and the clinical accuracy is not high. With the development of artificial intelligence technology, artificial neural networks are increasingly applied in medical treatment to assist doctors in diagnosis, but selecting a suitable neural network model must be considered. Read More

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Treatment of Patellofemoral Pain Syndrome with Dielectric Radiofrequency Diathermy: A Preliminary Single-Group Study with Six-Month Follow-Up.

Medicina (Kaunas) 2021 Apr 28;57(5). Epub 2021 Apr 28.

Department of Medical-Surgical Therapy, Medicine Faculty, University of Extremadura, 06071 Badajoz, Spain.

: Notwithstanding patellofemoral pain syndrome (PFPS) being one of the most common causes of pain in the front of the knee in outpatients, few studies have shown the effects of radiofrequency on knee pain and function in this population. The aim of the present study was to determine whether outpatients diagnosed with PFPS obtained improvement in pain and function after treatment by dynamic application of monopolar dielectric diathermy by emission of radiofrequency (MDR). : An experimental study was conducted with 27 subjects with PFPS. Read More

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The relationship between quadriceps fat pad syndrome and patellofemoral morphology: a case-control study.

J Orthop Traumatol 2021 Apr 28;22(1):17. Epub 2021 Apr 28.

Department of Orthopedics and Traumatology, Antalya Training and Research Hospital, Kazım Karabekir Cd., Soguksu, 70100, Muratpaşa, Turkey.

Background: The purpose of this prospective case-control study is to investigate the relationship between quadriceps fat pad syndrome (QFPS) and patellofemoral morphology.

Materials And Methods: Twenty-two patients with QFPS and 22 age- and gender-matched healthy volunteers were included. The diagnosis of QFPS was supported both clinically and radiologically. Read More

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Patellofemoral Chondropathy Areas in Folk Dancers: An MRI Study.

Med Probl Perform Art 2021 Mar;36(1):34-38

Demiroglu Bilim University, Faculty of Medicine, Dep. of Orthopedics and Traumatology, Abide i Hurriyet Cad No 164 Şişli, 34381 Istanbul, Turkey. Tel 0090 212 224 49 50 -4172, fax 0090 212 224 03 56.

Background: Patellofemoral chondropathy (PFC) is one of the most important causes of patellofemoral pain syndrome. PFC may occur as a result of anatomic reasons such as patellar malalignment and/or increased patellofemoral joint stresses. Most research on this subject has involved sports injuries and anatomic variations. Read More

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Diagnosis of Patellofemoral Pain Syndrome Based on a Multi-Input Convolutional Neural Network With Data Augmentation.

Front Public Health 2021 11;9:643191. Epub 2021 Feb 11.

College of Physics and Information Engineering, Fuzhou University, Fuzhou, China.

Patellofemoral pain syndrome (PFPS) is a common disease of the knee. Despite its high incidence rate, its specific cause remains unclear. The artificial neural network model can be used for computer-aided diagnosis. Read More

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Electromyographic and kinematic analysis of females with excessive medial knee displacement in the overhead squat.

J Electromyogr Kinesiol 2021 Apr 9;57:102530. Epub 2021 Feb 9.

Neuromuscular Research Lab, Faculdade de Motricidade Humana, Universidade de Lisboa, Lisboa, Portugal; CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, Lisboa, Portugal.

Dynamic knee valgus is a multi-planar motion that has been associated with anterior cruciate ligament injuries and patellofemoral pain syndrome. Clinical assessment of dynamic knee valgus is usually performed through visual appearance of medial knee displacement (MKD) during the overhead squat. The aim of this study is to identify the kinematic and neuromuscular parameters associated with MKD. Read More

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Generalized joint hypermobility, scoliosis, patellofemoral pain, and physical abilities in young dancers.

BMC Musculoskelet Disord 2021 Feb 9;22(1):161. Epub 2021 Feb 9.

Orthopedic Rehabilitation Department, Chaim Sheba Medical Center, Tel-Hashomer, Israel.

Background: Many young girls with generalized joint hypermobility (GJH) choose to participate in dance because their bodies are suited for this activity. Scoliosis tends to occur often in thin girls, who also are more likely to choose dance. Both anomalies (GJH and scoliosis) may be related to reduced abilities such as diminished strength and insufficient postural balance, with increased risk for musculoskeletal conditions. Read More

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February 2021

Outcome and experience of arthroscopic lateral retinacular release combined with lateral patelloplasty in the management of excessive lateral pressure syndrome.

J Orthop Surg Res 2021 Jan 22;16(1):80. Epub 2021 Jan 22.

Department of Orthopedic Surgery, General Hospital of Central Theater Command, No.68 Huangpu Road, Jiangan District, Wuhan, Hubei Province, China.

Background: Only a few studies have described the effect of full arthroscopic surgery in treatment of excessive lateral pressure syndrome (ELPS). Therefore, the purpose of this study was to assess the clinical efficacy and experience of total arthroscopic lateral retinacular (LR) release and lateral patelloplasty for the treatment of ELPS.

Methods: A total of 73 patients (88 knees) with ELPS underwent arthroscopic LR release and lateral patelloplasty. Read More

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January 2021

Use of hyaluronic acid injection after arthroscopic release in lateral patellar compression syndrome with degenerative cartilage changes: randomized control trial.

BMC Musculoskelet Disord 2021 Jan 6;22(1):24. Epub 2021 Jan 6.

Department of Orthopaedics, College of Medicine, Hawler Medical University, Erbil, Iraq.

Background: Degenerative cartilage changes can be seen, in cases of lateral patellar compression syndrome, involving the patellofemoral joint. Hyaluronic acid is a natural component of the synovial fluid and responsible for its elastic features and function of articular surfaces. The aim of this study is to show the effect of intra-articular injection of Hyaluronic acid, after arthroscopic lateral release in lateral patellar compression syndrome, on the functional outcome and knee pain in those patients with degenerative cartilage changes. Read More

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January 2021

Quantitative volume and dynamic contrast-enhanced MRI derived perfusion of the infrapatellar fat pad in patellofemoral pain.

Quant Imaging Med Surg 2021 Jan;11(1):133-142

Department of Radiology & Nuclear Medicine, Erasmus MC, Rotterdam, The Netherlands.

Background: Patellofemoral pain (PFP) is a common knee condition and possible precursor of knee osteoarthritis (OA). Inflammation, leading to an increased perfusion, or increased volume of the infrapatellar fat pad (IPFP) may induce knee pain. The aim of the study was to compare quantitative dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) parameters, as imaging biomarkers of inflammation, and volume of the IPFP between patients with PFP and controls and between patients with and without IPFP edema or joint effusion. Read More

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January 2021

Shank and rearfoot coordination and its variability during running in flatfoot.

J Biomech 2021 01 24;115:110119. Epub 2020 Dec 24.

Niigata University of Health and Welfare, Institute for Human Movement and Medical Sciences, 1398 Shimami-cho, Kita-Ku, Niigata City, Niigata 950-3198, Japan. Electronic address:

Flatfoot is a risk factor for patellofemoral pain syndrome (PFPS), and excessive rearfoot eversion occurring in flatfoot has been associated with the development and progression of PFPS; however, the mechanism remains unclear. This study aimed to investigate transverse shank and frontal rearfoot coordination patterns and variability when running with normal foot and flatfoot. Participants with normal foot (n = 13) and flatfoot (n = 13) were asked to run at their preferred speed. Read More

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January 2021

Women with patellofemoral pain and knee crepitus have reduced knee flexion angle during stair ascent.

Phys Ther Sport 2021 Mar 17;48:60-66. Epub 2020 Dec 17.

University of Toledo, School of Exercise and Rehabilitation Sciences, Toledo, OH, USA. Electronic address:

Objectives: To compare trunk and knee biomechanics of women with and without patellofemoral pain (PFP) and knee crepitus during stair ascent.

Design: Cross-sectional.

Setting: Laboratory-based study. Read More

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FUNCTIONAL JOINT MOBILIZATIONS FOR PATELLOFEMORAL PAIN SYNDROME: A CLINICAL SUGGESTION.

Int J Sports Phys Ther 2020 Aug;15(4):643-649

Total Motion Physical Therapy. Blacksburg, VA, USA.

Patellofemoral pain syndrome (PFPS) is often effectively managed with appropriate exercise prescription, yet in many cases PFPS related symptoms can become persistent and result in reduced daily, functional and sport-related activity levels. Patellofemoral mobilizations may be incorporated to minimize the impact of mobility deficits, and are frequently performed in the patellofemoral joint's open-packed position of knee extension. However, many individuals with PFPS have pain during weight-bearing activities requiring knee flexion such as stairs, squatting, or running. Read More

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Osteopathic Manipulative Treatment Versus Exercise Program in Runners With Patellofemoral Pain Syndrome: A Randomized Controlled Trial.

J Sport Rehabil 2020 Dec 17:1-10. Epub 2020 Dec 17.

Context: The effects of an exercise program (EP) for the treatment of patellofemoral pain syndrome (PFPS) are well known. However, the effects of osteopathic manipulative treatment (OMT) are unclear.

Objective: To evaluate the effects of OMT versus EP on knee pain, functionality, plantar pressure in middle foot (PPMF), posterior thigh flexibility (PTF), and range of motion of hip extension in runners with PFPS. Read More

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December 2020

Prevalence of Vitamin D Insufficiency and Deficiency in Young, Female Patients With Lower Extremity Musculoskeletal Complaints.

Sports Health 2021 Mar 10;13(2):173-180. Epub 2020 Dec 10.

Sports Medicine Institute, Hospital for Special Surgery, New York, New York.

Background: Low levels of vitamin D have well-known impacts on bone health, but vitamin D also has a more global role throughout many tissues, including skeletal muscle. The high prevalence of hypovitaminosis D and the vast physiological features of vitamin D have led researchers to examine the influence of vitamin D on physical performance and injury. Because of the critical role of vitamin D in maintaining musculoskeletal health and function, a high rate of hypovitaminosis D among female patients with a variety of musculoskeletal issues could be of high clinical relevance. Read More

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Hydraulic distension as a treatment for patellofemoral pain syndrome (PFPS) non-responsive to standard rehabilitation.

Knee 2021 Jan 2;28:391-399. Epub 2020 Dec 2.

Kouyukai Memorial Hospital, 262-0013, 77-3 Kotehashi, Hanamigawa-ku, Chiba-shi, Chiba, Japan.

Background: The occurrence of Patellofemoral Pain Syndrome (PFPS) is often found in daily medical care. Rehabilitation is usually applied with good results. However, patients often do not respond to standard rehabilitation, suggesting there may be some undetected factors that standard treatments cannot address. Read More

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January 2021

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

Anat Cell Biol 2021 Mar;54(1):1-9

Department of Anatomy, Faculty of Medicine, Ain Shams University, Cairo, Egypt.

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. Read More

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Lateral patellar tilt and its longitudinal association with patellofemoral osteoarthritis-related structural damage: Analysis of the osteoarthritis initiative data.

Knee 2020 Dec 25;27(6):1971-1979. Epub 2020 Nov 25.

Russell H. Morgan Department of Radiology, Johns Hopkins University, Baltimore, MD, USA.

Background: Increase in lateral patellar tilt-(LPT) can cause increased pressure on the lateral facet of the knee and can lead to patellar or femoral cartilage damage and further osseous changes. This study aims to test the hypothesis whether there is an association between increased LPT and MRI-based patellofemoral osteoarthritis-(OA) features at baseline and their worsening over a 2-year follow-up in participants of the Osteoarthritis Initiative-(OAI).

Methods: Recorded clinical and imaging data of 600 participants in the FNIH-OA biomarkers consortium was extracted from its database. Read More

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December 2020

Correlation of pain sensitization with muscle strength and angular kinematics in women with patellofemoral pain.

Clin Biomech (Bristol, Avon) 2021 01 11;81:105217. Epub 2020 Nov 11.

Department of Rehabilitation Science, Human Motion Analysis Laboratory, Universidade Nove de Julho, 300 Professora Maria José Barone Fernandes street, São Paulo, SP, Brazil. Electronic address:

Background: Patellofemoral pain has a poor long-term prognosis, which can be explained by a pain sensitization process. The pain sensitization process may be related to the increase of stress in the patellofemoral joint that is already associated with kinematic alterations and weakness in the musculature of the hip and knee.

Methods: Were compared the pressure pain threshold, temporal summation, conditioned pain modulation, angular kinematics, and muscle strength between 26 patellofemoral pain and 24 asymptomatic women and then correlated pain sensitization variables with biomechanical variables in pain group. Read More

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January 2021

The effect of patellofemoral pain syndrome on patellofemoral joint kinematics under upright weight-bearing conditions.

PLoS One 2020 30;15(9):e0239907. Epub 2020 Sep 30.

Division of Mechanical and Biomedical Engineering, College of Engineering, Ewha Womans University, Seoul, Korea.

Patellofemoral pain (PFP) is commonly caused by abnormal pressure on the knee due to excessive load while standing, squatting, or going up or down stairs. To better understand the pathophysiology of PFP, we conducted a noninvasive patellar tracking study using a C-arm computed tomography (CT) scanner to assess the non-weight-bearing condition at 0° knee flexion (NWB0°) in supine, weight-bearing at 0° (WB0°) when upright, and at 30° (WB30°) in a squat. Three-dimensional (3D) CT images were obtained from patients with PFP (12 women, 6 men; mean age, 31 ± 9 years; mean weight, 68 ± 9 kg) and control subjects (8 women, 10 men; mean age, 39 ± 15 years; mean weight, 71 ± 13 kg). Read More

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December 2020

The effects of McConnell patellofemoral joint and tibial internal rotation limitation taping techniques in people with Patellofemoral pain syndrome.

Gait Posture 2020 10 15;82:266-272. Epub 2020 Sep 15.

School of Allied Health, Faculty of Health Sciences, Australian Catholic University, Brisbane, Queensland, Australia.

Background: Taping is frequently used as part of the multi-modal management for patellofemoral pain syndrome (PFPS). McConnell Patellofemoral Joint Taping (PFJT) and Tibial Internal Rotation Limitation Taping (TIRLT) are proposed to be useful adjuncts to the management of PFPS. However, it is unclear if TIRLT offers similar benefits to PFJT, and its effect on pain and lower limb kinematics have not been investigated previously. Read More

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October 2020

Effect of gait retraining on segment coordination and joint variability in individuals with patellofemoral pain.

Clin Biomech (Bristol, Avon) 2020 12 20;80:105179. Epub 2020 Sep 20.

School of Health and Rehabilitation Sciences, Physiotherapy, University of Queensland, Australia.

Background: Gait retraining is advocated for the management of patellofemoral pain. This case series examined changes in lower limb variability following 6-weeks of gait retraining in individuals with patellofemoral pain.

Methods: Six runners with patellofemoral pain completed a 6-week physiotherapist-guided gait retraining program using minimalist footwear and increased cadence. Read More

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December 2020

Do exercises for patellofemoral pain reflect common injury mechanisms? A systematic review.

J Sci Med Sport 2021 Mar 10;24(3):229-240. Epub 2020 Sep 10.

Centre for Health and Rehabilitation Technologies, School of Health Sciences, Institute of Nursing and Health Research, University of Ulster, UK.

Objectives: Current best evidence has reported that therapeutic exercise programs that are designed to treat patellofemoral pain (PFP) should include both hip and knee specific exercises. The purpose of this review was to (1) examine the quality/comprehensiveness of exercise reporting in this field; (2) quantify the extent to which individual exercises comprised task-specific elements (single limb stance; eccentric control of the hip; rotational z-axis control) most likely to address key pathomechanics associated with PFP.

Design: Systematic review: a systematic survey of RCTs. Read More

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Women with patellofemoral pain show altered motor coordination during lateral step down.

J Biomech 2020 09 4;110:109981. Epub 2020 Aug 4.

Department of Rehabilitation Science, Human Motion Analysis Laboratory, Universidade Nove de Julho, São Paulo, Brazil. Electronic address:

Patients with patellofemoral pain (PFP) present altered activation of the hip and knee muscles. Electromyography (EMG) analyses in PFP patients are usually performed individually for each muscle. However, several studies suggest that the central nervous system may modulate neural commands directed to groups of co-activated muscles, called muscle synergies. Read More

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September 2020

Effects of exercise combined with whole body vibration in patients with patellofemoral pain syndrome: a randomised-controlled clinical trial.

BMC Musculoskelet Disord 2020 Aug 28;21(1):582. Epub 2020 Aug 28.

Department of Physiotherapy, Faculty of Nursing, Physiotherapy and Podiatry, University of Seville, 41009, Seville, Spain.

Background: Patellofemoral pain is a prevalent condition in the general population, especially in women, and produces functional impairment in patients. Therapeutic exercise is considered an essential part of the conservative management. The use of vibration platforms may help improve strength and function and reduce pain in patients with knee disorders. Read More

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Validity and reliability of 2-dimensional trunk, hip, and knee frontal plane kinematics during single-leg squat, drop jump, and single-leg hop in females with patellofemoral pain.

Phys Ther Sport 2020 Sep 25;45:181-187. Epub 2020 Jul 25.

School of Exercise and Rehabilitation Sciences, University of Toledo, Toledo, OH, USA. Electronic address:

Objectives: To investigate validity and between-session reliability of frontal plane trunk, hip, and knee kinematics during three functional tasks in females with patellofemoral pain (PFP).

Design: Observational.

Setting: Research Laboratory. Read More

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September 2020