796 results match your criteria Patellofemoral Joint Syndromes


Bioelectrical Activity of Vastus Medialis and Rectus Femoris Muscles in Recreational Runners with Anterior Knee Pain.

J Hum Kinet 2019 Mar 27;66:81-88. Epub 2019 Mar 27.

Medical University of Lublin, Lublin, Poland.

Patellofemoral pain syndrome (PFPS), the most common source of knee pain among physically active individuals, is defined as anterior knee pain involving the patella and retinaculum that excludes other intraarticular and peri-patellar pathology. Differences in the activation and endurance of the quadriceps components, causing an imbalance in the forces controlling patellar tracking during flexion and extension in the knee joint, appear to be the most commonly reported risk factors for PFPS. The aim of this study was to determine the differences in bioelectric activity of vastus medialis and rectus femoris muscles during half knee bend position in runners with PFPS. Read More

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http://dx.doi.org/10.2478/hukin-2018-0065DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6458583PMC

RANDOMIZED PROSPECTIVE STUDY ON THE TREATMENT OF FEMORO-PATELLAR OSTEOARTHRITIS USING BRACING.

Acta Ortop Bras 2019 Mar-Apr;27(2):85-91

Universidade de São Paulo, Faculdade de Medicina, Hospital das Clínicas, Department of Orthopedics and Traumatology, São Paulo, Brazil.

Objective: To compare the effect of a brace designed to stabilize the patellofemoral joint to that of a patella-shaped neoprene sleeve with patella cut out in patients with patellofemoral osteoarthritis.

Methods: Fifty-seven patients with femoro-patellar osteoarthritis were allocated to two groups: patients with femoro-patellar functional brace and those with a neoprene knee with a patellar orifice. Both groups underwent clinical treatment of osteoarthritis and used medications daily 1 month before and up to 3 months after brace placement. Read More

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http://dx.doi.org/10.1590/1413-785220192702208131DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6442709PMC
April 2019
1 Read

Arthroscopic treatment of symptomatic lateral synovial plica of the knee.

J Orthop Surg (Hong Kong) 2019 Jan-Apr;27(1):2309499019834496

1 Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan.

Introduction:: Synovial plicae are often observed when performing arthroscopic surgery, but their pathological nature and the necessity for treatment are still controversial. There are few reports regarding lateral synovial plicae because it is considered extremely rare. The purpose of this study was to report the clinical outcomes of athletes with symptomatic lateral synovial plicae who underwent arthroscopic surgery. Read More

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http://dx.doi.org/10.1177/2309499019834496DOI Listing
March 2019
1 Read

The Influence of Tibial Tuberosity-trochlear Groove Distance on Development of Patellofemoral Pain Syndrome.

Arch Bone Jt Surg 2019 Jan;7(1):46-51

Department of Orthopedic Surgery, Division of Knee Surgery, Shariati Hospital, Tehran University of Medical Science, Tehran, Iran.

Background: Tibial tuberosity-trochlear groove distance (TT-TGD) measurements play a decisive role in evaluating patellofemoral joint disorders. However, the prevalence of pathological TT-TGD among patients with patellofemoral pain remains unclear. The purpose of this study was to compare the size of TT-TGD among patients with patellofemoral pain syndrome (PFPS) and those with no history of patellofemoral pain. Read More

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6372266PMC
January 2019
1 Read

Quantitative magnetic resonance imaging in patellar tendon-lateral femoral condyle friction syndrome: relationship with subtle patellofemoral instability.

Skeletal Radiol 2019 Feb 4. Epub 2019 Feb 4.

Department of Radiology, The First Affiliated Hospital of Chongqing Medical University, 1 Youyi Road, Chongqing, 400016, Yuzhong District, China.

Objective: To investigate the correlation of patellar tendon-lateral femoral condyle friction syndrome (PTLFCFS) with subtle patellofemoral instability to explore its pathogenesis.

Materials And Methods: One hundred knees of 80 patients with PTLFCFS were analyzed retrospectively by retrieving magnetic resonance imaging (MRI) data over a 3-year period from our database. Seven quantitative parameters for evaluating patellofemoral stability were measured on MR images, including the Insall-Salvati ratio, tibial tuberosity-trochlear groove (TT-TG) distance, trochlear groove depth, medial trochlear/lateral trochlear length (MT/LT) ratio, medial trochlear/lateral trochlear height (MH/LH) ratio, lateral patellofemoral angle (LPA), and lateral trochlear inclination (LTI) angle. Read More

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http://dx.doi.org/10.1007/s00256-019-3163-1DOI Listing
February 2019
3 Reads

A Case of Prefemoral Fat Pad Impingement Syndrome Caused by Hyperplastic Fat Pad.

Case Rep Orthop 2018 23;2018:3583049. Epub 2018 Dec 23.

Department of Orthopedic Surgery, Shinshu University School of Medicine, 3-26-1, Asahi, Matsumoto, Nagano 390-8621, Japan.

Case: We report a rare case of prefemoral fat pad impingement syndrome that was caused by a hyperplasia of the normal suprapatellar fat pad. Pain and catching were observed in the proximal-lateral patellofemoral joint, and MRI imaging confirmed a hyperplasic mass in the same area. Although conservative treatment showed no signs of improvement, symptoms improved after an arthroscopic excision of the mass. Read More

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https://www.hindawi.com/journals/crior/2018/3583049/
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http://dx.doi.org/10.1155/2018/3583049DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6323454PMC
December 2018
7 Reads

Biophysical stimulation of the knee with PEMFs: from bench to bedside.

J Biol Regul Homeost Agents 2018 Nov-Dec;32(6 Suppl. 1):23-28

Department of Neuroscience and Organs of Sense, Orthopaedics Section, University of Bari Aldo Moro, Bari, Italy.

Clinical biophysics investigates the relationship between non-ionizing physical energy and the human body. Although several types of electrical stimulation devices have received US FDA approval for orthopaedic application, the use of Pulsed Electromagnetic Field (PEMFs) play a central role in joint biophysics. This narrative review aims to summarize the current evidences on the efficacy of PEMF-therapy in the treatment of knee articular diseases. Read More

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January 2019
3 Reads

Association of altered frontal plane kinematics and physical activity levels in females with patellofemoral pain.

Gait Posture 2018 09 18;65:86-88. Epub 2018 Jul 18.

Curry School of Education, Department of Kinesiology, University of Virginia, Charlottesville, VA, USA.

Background: Females with patellofemoral pain (PFP) present with altered frontal plane kinematics, decreased physical activity, and elevated psychological features. However, the relationship between these factors has not been evaluated.

Research Question: Does a relationship exist between frontal plane kinematics, physical activity levels, and fear avoidance beliefs in females with PFP. Read More

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http://dx.doi.org/10.1016/j.gaitpost.2018.07.164DOI Listing
September 2018
1 Read

Descending stairs: Good or bad task to discriminate women with patellofemoral pain?

Gait Posture 2018 09 28;65:26-32. Epub 2018 Jun 28.

Department of Morphology, Universidade Federal de São Paulo, São Paulo, Brazil. Electronic address:

Background: There is no consensus on kinematics alterations during descending stairs in females with patellofemoral pain (PFP). In addition, there are no studies that have evaluated the three dimensional kinematics of the trunk, pelvis, hip, knee, and ankle using a multi-segmental model of the foot simultaneously during this task in patients with PFP and evaluated the subphases of stair descent. The objectives of this study were to compare the three dimensional kinematics of the trunk, pelvis, and lower limbs during different subphases of stair descent and identify the discriminatory capacity of the kinematic variables among women with PFP and healthy women. Read More

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http://dx.doi.org/10.1016/j.gaitpost.2018.06.170DOI Listing
September 2018
1 Read

Walking with an induced unilateral knee extension restriction affects lower but not upper body biomechanics in healthy adults.

Gait Posture 2018 09 25;65:182-189. Epub 2018 Jul 25.

Bern University of Applied Sciences, Department of Health Professions, Bern, Switzerland. Electronic address:

Background: Unilateral knee flexion contractures (KFC) are frequently seen in orthopedic rehabilitation and often interfere with the normal gait pattern, resulting in passive and/or active secondary deviations. In order to prevent KFC-related complications such as patellofemoral pain or the knee spine syndrome, a comprehensive understanding of such deviations is necessary.

Research Question: How does an artificially induced unilateral KFC affect whole body biomechanics in young healthy adults during gait?

Methods: Twenty-four healthy young adults (females/males: 13/11; mean age: 27. Read More

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http://dx.doi.org/10.1016/j.gaitpost.2018.07.177DOI Listing
September 2018
4 Reads

Efficacy of Kinesio Taping and McConnell Taping Techniques in the Management of Anterior Knee Pain.

J Sport Rehabil 2019 Jan 29:1-8. Epub 2019 Jan 29.

Context: Anterior knee pain also known as patellofemoral pain syndrome is a frequently encountered musculoskeletal disorder that worsens with activity. The multifactorial etiology of patellofemoral pain syndrome alters lower-extremity mechanics, increasing patellofemoral joint stresses during weight-bearing tasks. Kinesio and McConnell tapings are often incorporated into the treatment, but their efficacy is still unclear. Read More

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https://journals.humankinetics.com/doi/10.1123/jsr.2017-0369
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http://dx.doi.org/10.1123/jsr.2017-0369DOI Listing
January 2019
11 Reads

Prevalence of excessive lateral pressure syndrome in varus osteoarthritic candidates for high tibial osteotomy.

Knee 2018 Dec 8;25(6):1192-1196. Epub 2018 Nov 8.

Department of Physical Medicine and Rehabilitation, College of Medicine, Kyung Hee University, Seoul, South Korea.

Background: This study aimed to determine the prevalence of excessive lateral pressure syndrome (ELPS) in potential candidates for high tibial osteotomy (HTO) using single-photon emission computed tomography-computed tomography (SPECT-CT). We also sought to identify risk factors related to the presence of ELPS.

Methods: This retrospective study included 150 patients (216 knees) who were candidates for HTO from an initial screening of 3579 patients (7158 knees). Read More

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https://linkinghub.elsevier.com/retrieve/pii/S09680160183015
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http://dx.doi.org/10.1016/j.knee.2018.10.009DOI Listing
December 2018
14 Reads

National Athletic Trainers' Association Position Statement: Management of Individuals With Patellofemoral Pain.

J Athl Train 2018 Sep;53(9):820-836

Department of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles.

Objective: : To present recommendations for athletic trainers and other health care providers regarding the identification of risk factors for and management of individuals with patellofemoral pain (PFP).

Background: : Patellofemoral pain is one of the most common knee diagnoses; however, this condition continues to be one of the most challenging to manage. Recent evidence has suggested that certain risk factors may contribute to the development of PFP. Read More

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http://dx.doi.org/10.4085/1062-6050-231-15DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6208300PMC
September 2018
23 Reads

Braces and Splints for Common Musculoskeletal Conditions.

Am Fam Physician 2018 Nov;98(10):570-576

West Virginia University School of Medicine-Eastern Campus, Harpers Ferry, WV, USA.

Braces and splints can immobilize and protect joints, reduce pain, decrease swelling, and facilitate healing of acute injuries. They are also used for injury prevention and chronic pain reduction, and to alter the function of a joint. The medial unloading (valgus) knee brace is an option for patients with medial knee osteoarthritis, but evidence of long-term benefit is limited. Read More

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November 2018
25 Reads

Quadriceps neuromuscular function in women with patellofemoral pain: Influences of the type of the task and the level of pain.

PLoS One 2018 10;13(10):e0205553. Epub 2018 Oct 10.

Physical Therapy Department, School of Science and Technology, São Paulo State University, Presidente Prudente, Sao Paulo, Brazil.

The present study aimed at investigating whether the neuromuscular system behaves differently (in terms of force and muscle activity generation) as a function of the task being performed (i.e. maximal voluntary efforts vs stair negotiation) and the presence of patellofemoral pain (PFP) and possible influences of pain intensity. Read More

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0205553PLOS
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6179260PMC
March 2019
3 Reads

Distal femoral torsional osteotomy increases the contact pressure of the medial patellofemoral joint in biomechanical analysis.

Knee Surg Sports Traumatol Arthrosc 2018 Sep 29. Epub 2018 Sep 29.

Department of Orthopaedic Sports Medicine, Hospital Rechts der Isar, Technical University Munich, Ismaningerstr. 22, 81675, Munich, Germany.

Purpose: Torsional osteotomy of the distal femur allows anatomic treatment of patellofemoral instability and patellofemoral pain syndrome in cases of increased femoral antetorsion. The purpose of this study was to investigate the effects of distal femoral torsional osteotomy on pressure distribution of the medial and lateral patellar facet.

Methods: Nine fresh frozen human knee specimens were embedded in custom-made 3D-printed casts and tested with a robotic arm. Read More

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http://dx.doi.org/10.1007/s00167-018-5165-2DOI Listing
September 2018
8 Reads

A New Technique for Distalization of the Tibial Tubercle That Allows Preservation of the Proximal Buttress.

Orthop J Sports Med 2018 Sep 25;6(9):2325967118798621. Epub 2018 Sep 25.

Center for Regenerative Medicine and Cartilage Repair Center, Brigham and Women's Hospital, Boston, Massachusetts, USA.

Background: Tibial tubercle osteotomy (TTO) is a treatment option for patients with patellofemoral instability and chondrosis. Occasionally, these patients also present with patella alta, and distalization of the tibial tubercle is desirable. Free distal transfer of the tubercle, however, can compromise mechanical stability of the osteotomy construct, leading to loss of fixation. Read More

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http://dx.doi.org/10.1177/2325967118798621DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6156213PMC
September 2018
34 Reads

Patellar Resurfacing versus Nonresurfacing with Patellaplasty in Total Knee Arthroplasty.

Indian J Orthop 2018 Jul-Aug;52(4):393-398

P.D. Hinduja National Hospital, Mumbai, Maharashtra, India.

Background: Anterior knee pain following total knee arthroplasty (TKA) remains one of the important reasons for patient dissatisfaction. The management of patellofemoral joint is controversial and a decision whether to resurface the patella or not, is important. The present study compares the clinical and radiological outcomes between patellar resurfacing and nonresurfacing in patients undergoing bilateral TKA. Read More

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http://dx.doi.org/10.4103/ortho.IJOrtho_512_16DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6055458PMC
August 2018
2 Reads
0.624 Impact Factor

Femoral malrotation from diaphyseal fractures results in changes in patellofemoral alignment and higher patellofemoral stress from a finite element model study.

Knee 2018 Oct 27;25(5):807-813. Epub 2018 Jul 27.

Aix Marseille University, APHM, CNRS, ISM, Sainte-Marguerite Hospital, Institute for Locomotion, Department of Orthopaedics and Traumatology, Marseille, France.

Background: Malrotation of the femur is a frequent complication in the management of a diaphyseal fracture. It is often responsible for pain and adverse functional results. Among these complications, contact stress effects on the patellofemoral joint are recognized as predictive factors of impaired results. Read More

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http://dx.doi.org/10.1016/j.knee.2018.06.008DOI Listing
October 2018
25 Reads

Quality of life in individuals with patellofemoral pain: A systematic review including meta-analysis.

Phys Ther Sport 2018 Sep 28;33:96-108. Epub 2018 Jun 28.

La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, La Trobe University, Bundoora, Victoria, Australia. Electronic address:

Objective: The aim of this systematic review is to describe QoL in individuals with PFP, and determine the impact of PFP interventions on QoL.

Methods: Five databases were searched for studies reporting QoL in individuals with PFP, with mean age under 50 years. Data were pooled based on QoL tool (e. Read More

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http://dx.doi.org/10.1016/j.ptsp.2018.06.006DOI Listing
September 2018
11 Reads

Implications of knee crepitus to the overall clinical presentation of women with and without patellofemoral pain.

Phys Ther Sport 2018 Sep 17;33:89-95. Epub 2018 Jul 17.

Laboratory of Biomechanics and Motor Control, School of Science and Technology, São Paulo State University (UNESP), Presidente Prudente, Brazil.

Objectives: Compare anthropometric characteristics, function, kinesiophobia, catastrophism and knee extensor strength between women (i) with PFP and crepitus (PFP); (ii) with PFP and no crepitus (PFP); (iii) without PFP and crepitus (Pain-free); and (iv) without PFP and no crepitus (Pain-free).

Design: Cross-sectional.

Setting: Laboratory study. Read More

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http://dx.doi.org/10.1016/j.ptsp.2018.07.007DOI Listing
September 2018
10 Reads

Use of an Elastomeric Knee Brace in Patellofemoral Pain Syndrome: Short-Term Results.

Joints 2018 Jun 22;6(2):85-89. Epub 2018 Jun 22.

Department of Knee Surgery, Gaetano Pini Hospital, Milan, Italy.

 This article verifies the effectiveness of a new brace on patellofemoral pain syndrome (PFPS) in adjunct to a specifically developed rehabilitation program.  Two groups of 30 patients with PFPS were prospectively and randomly allocated to a rehabilitation protocol, with (group A) or without (group B) the use of a specific brace. All the patients were assessed at 3, 6, and 12 months using the disease-specific Kujala scale and a visual analog scale (VAS) for pain; time to return to sport and patient satisfaction with the brace were also recorded. Read More

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http://dx.doi.org/10.1055/s-0038-1661339DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6059862PMC
June 2018
28 Reads

IS MULTI-JOINT OR SINGLE JOINT STRENGTHENING MORE EFFECTIVE IN REDUCING PAIN AND IMPROVING FUNCTION IN WOMEN WITH PATELLOFEMORAL PAIN SYNDROME? A SYSTEMATIC REVIEW AND META-ANALYSIS.

Int J Sports Phys Ther 2018 Jun;13(3):321-334

Walsh University, North Canton, OH.

Background: Patellofemoral pain syndrome is one of the most common causes of knee pain, especially in the female population. Conflicting evidence exists on whether a multi-joint strengthening program produces a greater outcome when compared to a single joint approach.

Purpose: The aim of this systematic review and meta-analysis was to investigate the effectiveness of a multi-joint strengthening program compared to a traditional single joint strengthening program in reducing pain and improving function in females diagnosed with patellofemoral pain syndrome. Read More

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6044587PMC
June 2018
3 Reads

Differences in pain and function between adolescent athletes and physically active non-athletes with patellofemoral pain.

Phys Ther Sport 2018 Sep 11;33:70-75. Epub 2018 Jul 11.

Laboratory of Biomechanics and Motor Control (LABCOM), School of Science and Technology, São Paulo State University (UNESP), Presidente Prudente, Sao Paulo, Brazil. Electronic address:

Objectives: To investigate pain level and function limitation in adolescent athletes and physically active non-athletes with PFP.

Design: Cross-sectional study.

Setting: Adolescent athletes were recruited at a sport center complex. Read More

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http://dx.doi.org/10.1016/j.ptsp.2018.07.005DOI Listing
September 2018
8 Reads

Association between patellofemoral congruence and patellofemoral chondropathy in patients with anterior knee pain: A T2 mapping knee MRI study.

Eklem Hastalik Cerrahisi 2018 Aug;29(2):93-9

Department of Orthopedics and Traumatology, Sağlık Bilimleri University, Ümraniye Training and Research Hospital, 34764 Ümraniye, İstanbul, Turkey.

Objectives: In this study, the T2 mapping magnetic resonance imaging technique was used to evaluate early cartilage changes associated with patellofemoral alignment and morphology.

Patients And Methods: Fifty four patients (Study group: 38 females, 16 males) with anterior knee pain and a randomly selected and age-matched 50 controls (Control group; 37 females, 13 males) were compared by two blinded authors in terms of T2 values of the patella medial, lateral facet, and trochlea, Insall-Salvatti index, lateral trochlear inclination angle, patellar tilt angle, sulcus angle, and patella medial and lateral facet lengths. The inter- and intra-observer reliability tests were assessed. Read More

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http://dx.doi.org/10.5606/ehc.2018.60364DOI Listing
August 2018
5 Reads

Electromyographic analysis of hip and knee muscles during specific exercise movements in females with patellofemoral pain syndrome: An observational study.

Medicine (Baltimore) 2018 Jul;97(28):e11424

Department of Sports Medicine, China Medical University, Taichung, Taiwan (R.O.C).

Hip muscle strengthening and knee extensor strengthening are common training exercises for patellofemoral pain syndrome (PFPS). PFPS engendered by insufficient hip abductor and external rotator muscle strength has been of interest, but these exercise movements may increase the lateral vector force of the patella warrants clarification. So, the purpose of this study was to assess muscular activations of vastus lateralis (VL), vastus medialis oblique (VMO), and gluteus medius muscles in electromyographic analysis during hip abduction and external rotator movements and open and closed kinetic chain knee extension movements. Read More

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http://dx.doi.org/10.1097/MD.0000000000011424DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6076041PMC
July 2018
9 Reads

Histopathological and electron microscopic study in dogs with patellar luxation and skin hyperextensibility.

J Vet Med Sci 2018 Aug 6;80(8):1309-1316. Epub 2018 Jul 6.

Synergy Animal General Hospital, 815 Ishigami Kawaguchi, Saitama 333-0823, Japan.

Patellar luxation is abnormal displacement of the patella from the femoral trochlear groove. It is seen primarily in small breed dogs and causes pain and limited mobility of the stifle joint. This study aimed to investigate the relationship among patellar luxation, skin extension, and skin collagen fibril diameter. Read More

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http://dx.doi.org/10.1292/jvms.18-0115DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6115261PMC
August 2018
3 Reads

CLINICAL MUSCULAR EVALUATION IN PATELLOFEMORAL PAIN SYNDROME.

Acta Ortop Bras 2018 Mar-Apr;26(2):91-93

. IPE-HOME, Hospital Ortopédico e Medicina Especializada, Brazilia, DF, Brazil.

Objective: To define a profile of the muscle groups affected by patellofemoral pain syndrome (PFPS) to determine a pattern of functional weaknesses around the knee.

Methods: Sixty-three female patients were randomly selected, and 17 included in this study, receiving a clinical evaluation with pre-established protocol which evaluated the quadriceps, abductors, range of motion in the internal rotators and ankle dorsiflexors, pelvic tilt, and dynamic valgus.

Results: Losses were seen in abductor strength and ankle dorsiflexor range of motion in comparison with the contralateral limb (0. Read More

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http://dx.doi.org/10.1590/1413-785220182602187215DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6032615PMC
July 2018
29 Reads

2018 Consensus statement on exercise therapy and physical interventions (orthoses, taping and manual therapy) to treat patellofemoral pain: recommendations from the 5th International Patellofemoral Pain Research Retreat, Gold Coast, Australia, 2017.

Br J Sports Med 2018 Sep 20;52(18):1170-1178. Epub 2018 Jun 20.

La Trobe Sport and Exercise Medicine Research Centre, College of Science, Health and Engineering, La Trobe University, Melbourne, Victoria, Australia.

Patellofemoral pain affects a large proportion of the population, from adolescents to older adults, and carries a substantial personal and societal burden. An international group of scientists and clinicians meets biennially at the International Patellofemoral Research Retreat to share research findings related to patellofemoral pain conditions and develop consensus statements using best practice methods. This consensus statement, from the 5th International Patellofemoral Research Retreat held in Australia in July 2017, focuses on exercise therapy and physical interventions (eg, orthoses, taping and manual therapy) for patellofemoral pain. Read More

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http://dx.doi.org/10.1136/bjsports-2018-099397DOI Listing
September 2018
13 Reads

Knee crepitus is prevalent in women with patellofemoral pain, but is not related with function, physical activity and pain.

Phys Ther Sport 2018 Sep 6;33:7-11. Epub 2018 Jun 6.

Laboratory of Biomechanics and Motor Control, School of Science and Technology, São Paulo State University (UNESP), Presidente Prudente, Brazil.

Objectives: (i) To assess the reliability of knee crepitus measures, (ii) to investigate the association between knee crepitus and PFP; (iii) to investigate the relationship between knee crepitus with self-reported function, physical activity and pain.

Design: Cross-sectional.

Setting: Laboratory-based study. Read More

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http://dx.doi.org/10.1016/j.ptsp.2018.06.002DOI Listing
September 2018
8 Reads

The effects & mechanisms of increasing running step rate: A feasibility study in a mixed-sex group of runners with patellofemoral pain.

Phys Ther Sport 2018 Jul 31;32:244-251. Epub 2018 May 31.

Sports & Exercise Medicine, Queen Mary University of London, United Kingdom; Physiotherapy Department, Bart's Health NHS Trust, London, United Kingdom. Electronic address:

Objectives: To explore feasibility of recruitment and retention of runners with patellofemoral pain (PFP), before delivering a step rate intervention.

Design: Feasibility study.

Setting: Human performance laboratory. Read More

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http://dx.doi.org/10.1016/j.ptsp.2018.05.018DOI Listing
July 2018
4 Reads

Effects of patellar taping on knee pain, functional disability, and patellar alignments in patients with patellofemoral pain syndrome: A randomized clinical trial.

J Bodyw Mov Ther 2018 Apr 13;22(2):493-497. Epub 2017 Jun 13.

Mobility Impairment Research Center, Babol University of Medical Sciences, Iran. Electronic address:

Question: What are the effects of patellar taping on pain, functional disability and patellar alignments in Patellofemoral Pain Syndrome (PFPS)?

Design: Double-blind randomized clinical trial.

Participants: Thirty PFPS Patients were randomly divided into two groups, intervention and control.

Intervention: Patients in control group received only the routine physiotherapy. Read More

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http://dx.doi.org/10.1016/j.jbmt.2017.06.005DOI Listing
April 2018
4 Reads

Response the letter to the editor for the masterclass: Do hip muscle weakness and dynamic knee valgus matter for the clinical evaluation and decision-making process in patients with patellofemoral pain?

Braz J Phys Ther 2018 Sep - Oct;22(5):432-433. Epub 2018 May 24.

Human Motion Analysis Laboratory, Rehabilitation Science Department, Universidade Nove de Julho (UNINOVE), São Paulo, SP, Brazil. Electronic address:

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http://dx.doi.org/10.1016/j.bjpt.2018.05.002DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6157464PMC
November 2018
2 Reads

Prevalence of patellofemoral pain and knee pain in the general population of Chinese young adults: a community-based questionnaire survey.

BMC Musculoskelet Disord 2018 May 24;19(1):165. Epub 2018 May 24.

Department of Sports Medicine and Adult Reconstructive Surgery, Drum Tower Hospital, School of Medicine, Nanjing University, 321 Zhongshan Road, Nanjing, Jiangsu, 210008, People's Republic of China.

Background: Previous studies that have described the prevalence of patellofemoral pain (PFP) have been limited to samples of military personnel or sporting populations, and convincing data in the general Chinese population are lacking. The present study defined the prevalence of PFP and knee pain in the general population of Chinese young adults and evaluated whether gender, age, or body mass index (BMI) were associated with PFP.

Methods: An anonymous online questionnaire survey was open to the general public in China. Read More

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http://dx.doi.org/10.1186/s12891-018-2083-xDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5968546PMC
May 2018
4 Reads
1.900 Impact Factor

Clinics in diagnostic imaging (185).

Singapore Med J 2018 04;59(4):177-182

Department of Diagnostic Radiology, Khoo Teck Puat Hospital, Singapore.

A 20-year-old National Serviceman presented with left knee pain and swelling after training for his physical fitness test. Lateral knee radiography and magnetic resonance (MR) imaging showed patellar tendon-lateral femoral condyle friction syndrome (PT-LFCFS), on a background of patella alta and patellar malalignment. The patient was treated non-operatively with a course of physiotherapy and given advice on rest and activity modification. Read More

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http://dx.doi.org/10.11622/smedj.2018045DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5915633PMC
April 2018
5 Reads

The effects of three quarter and full length foot orthoses on knee mechanics in healthy subjects and patellofemoral pain patients when walking and descending stairs.

Gait Posture 2018 May 17;62:518-522. Epub 2018 Apr 17.

Department of Health Professions, Manchester Metropolitan University, UK.

Background: An increased load of the patellofemoral joint is often attributed to foot function in patients with patellofemoral pain. Foot orthoses are commonly prescribed for this condition; however the mechanisms by which they work are poorly understood. The aim of this study was to investigate the kinematics and kinetics of the knee between patellofemoral pain patients and a group of healthy subjects when using a standardised foot orthosis prescription during walking and step descent. Read More

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http://dx.doi.org/10.1016/j.gaitpost.2018.04.018DOI Listing
May 2018
3 Reads

Runners with patellofemoral pain demonstrate sub-groups of pelvic acceleration profiles using hierarchical cluster analysis: an exploratory cross-sectional study.

BMC Musculoskelet Disord 2018 Apr 19;19(1):120. Epub 2018 Apr 19.

Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada.

Background: Previous studies have suggested that distinct and homogenous sub-groups of gait patterns exist among runners with patellofemoral pain (PFP), based on gait analysis. However, acquisition of 3D kinematic data using optical systems is time consuming and prone to marker placement errors. In contrast, axial segment acceleration data can represent an overall running pattern, being easy to acquire and not influenced by marker placement error. Read More

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http://dx.doi.org/10.1186/s12891-018-2045-3DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5907713PMC
April 2018
4 Reads

Association between increase in vertical ground reaction force loading rate and pain level in women with patellofemoral pain after a patellofemoral joint loading protocol.

Knee 2018 Jun 11;25(3):398-405. Epub 2018 Apr 11.

Physical Therapy Department, School of Science and Technology, São Paulo State University (UNESP), Presidente Prudente, Brazil. Electronic address:

Background: The etiology of patellofemoral pain (PFP) is thought to be the result of increased patellofemoral joint (PFJ) load and aberrant lower extremity mechanics, including altered vertical ground reaction forces (VGRF). However, few studies have investigated the association between an increase in pain and VGRF loading rates in the context of PFP. Thus, this study aimed to investigate the immediate effects of PFJ loading on pain and VGRF loading rate, and to see if there is a link between modification of both pain and VGRF loading rate during stair negotiation. Read More

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http://dx.doi.org/10.1016/j.knee.2018.03.009DOI Listing
June 2018
5 Reads

Hip kinematics during functional tasks in females with patellofemoral pain: Modification following rehabilitation and correlation with clinical improvement.

Phys Ther Sport 2018 Jul 23;32:7-14. Epub 2018 Mar 23.

Centre for Interdisciplinary Research in Rehabilitation and Social Integration, Quebec City, Quebec G1M 2S8, Canada; Department of Rehabilitation, Faculty of Medicine, Universite Laval, Quebec City, Quebec G1R 1P5, Canada. Electronic address:

Objectives: To compare hip kinematics during two functional tasks in females with and without patellofemoral pain (PFP), and to determine if hip kinematics and, symptoms and functional limitations were improved after a rehabilitation program.

Design: Cross sectional and longitudinal.

Participants: Sixteen females with and 15 without PFP. Read More

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http://dx.doi.org/10.1016/j.ptsp.2018.03.001DOI Listing
July 2018
7 Reads

The Effect of Diacutaneous Fibrolysis on Patellar Position Measured Using Ultrasound Scanning in Patients With Patellofemoral Pain Syndrome.

J Sport Rehabil 2019 Jan 28:1-6. Epub 2019 Jan 28.

Context: Tightness or lack of flexibility of several muscles of the thigh has been associated with patellofemoral joint pain. A tight iliotibial band can lead to laterally located patella and an abnormal patellar tracking pattern. Diacutaneous fibrolysis (DF) is commonly used to reduce muscle tightness, but no studies have evaluated the effects of this technique in the treatment of patients with patellofemoral pain syndrome. Read More

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https://journals.humankinetics.com/doi/10.1123/jsr.2017-0272
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http://dx.doi.org/10.1123/jsr.2017-0272DOI Listing
January 2019
8 Reads

Which is the best predictor of excessive hip internal rotation in women with patellofemoral pain: Rearfoot eversion or hip muscle strength? Exploring subgroups.

Gait Posture 2018 05 26;62:366-371. Epub 2018 Mar 26.

Laboratory of Biomechanics and Motor Control (LABCOM), School of Science and Technology, São Paulo State University (UNESP), Presidente Prudente, Sao Paulo, Brazil. Electronic address:

Background: Patellofemoral pain (PFP) has been linked to increased patellofemoral joint stress as a result of excessive hip internal rotation. Lower hip strength and/or excessive rearfoot eversion have been used to explain such altered movement pattern; however, it is unknown which one is the best predictor of excessive hip internal rotation.

Research Question: To investigate if peak rearfoot eversion and/or peak concentric hip abductor strength can predict peak hip internal rotation during stair ascent in women with PFP. Read More

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http://dx.doi.org/10.1016/j.gaitpost.2018.03.037DOI Listing
May 2018
3 Reads

Effect of squatting velocity on hip muscle latency in women with patellofemoral pain syndrome.

J Phys Ther Sci 2018 Mar 2;30(3):381-386. Epub 2018 Mar 2.

Human Motor Control Laboratory, Department of Human Movement Sciences, Faculty of Health Sciences, Universidad de Talca: Talca, Chile.

[Purpose] Neuromuscular activity has been evaluated in patellofemoral pain syndrome but movement velocity has not been considered. The aim was to determine differences in onset latency of hip and knee muscles between individuals with and without patellofemoral pain syndrome during a single leg squat, and whether any differences are dependent on movement velocity. [Subjects and Methods] Twenty-four females with patellofemoral pain syndrome and 24 healthy females participated. Read More

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http://dx.doi.org/10.1589/jpts.30.381DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5857442PMC
March 2018
5 Reads

Popping the cap: the constellation of MRI findings in patellofemoral syndrome.

Br J Radiol 2018 Sep 4;91(1089):20170770. Epub 2018 Apr 4.

1 Department of Radiology, Vancouver General Hospital , Vancouver, BC , Canada.

Patellofemoral syndrome (PFS) is a common etiology of anterior knee pain, particularly among young female athletes. Despite recent advancements in the resolution of MRI, there still remains a paucity of literature that has investigated the MRI findings associated with PFS. This pictorial essay will describe our institution's experience with cases of PFS and review what we believe to be a constellation of findings associated with this diagnostic entity. Read More

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http://dx.doi.org/10.1259/bjr.20170770DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6223143PMC
September 2018
12 Reads

Characteristics of Plantar Pressures and Related Pain Profiles in Elite Sprinters and Recreational Runners.

J Am Podiatr Med Assoc 2018 Jan;108(1):33-44

Background: Plantar pressure measurement is effective for assessing plantar loading and can be applied to evaluating foot performance. We sought to explore the characteristics of plantar pressures in elite sprinters and recreational runners during static standing and walking.

Methods: Arch index (AI) values, regional plantar pressure distributions (PPDs), and footprint characteristics were examined in 80 elite sprinters and 90 recreational runners using an optical plantar pressure measurement system. Read More

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http://dx.doi.org/10.7547/15-189DOI Listing
January 2018
15 Reads

Ultrasonography and clinical examination of knee injuries in pre- and post- menarche dancers.

Res Sports Med 2018 Jul-Sep;26(3):289-305. Epub 2018 Mar 8.

d Orthopedic Rehabilitation Dept ., Sheba Medical Center , Tel-Hashomer , Israel.

This study aimed at evaluating whether the prevalence of knee injuries and morphological features are different among pre-and-post menarche dancers; Sixty-seven pre-and-post menarche dancers were screened for anthropometric parameters; knee laxity; patella femoral pain syndrome (PFPS), pathologies and anatomical structure of the knees. Both groups showed a high and similar prevalence of PFPS. The post-menarche dancers produced a significantly higher rate of Tanner stages 3-4 (p = . Read More

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http://dx.doi.org/10.1080/15438627.2018.1447474DOI Listing
September 2018
19 Reads

In-vivo patellar tracking in individuals with patellofemoral pain and healthy individuals.

J Orthop Res 2018 Feb 28. Epub 2018 Feb 28.

Department of Computing Science, University of Alberta, Edmonton, Canada.

Understanding of the exact cause of patellofemoral pain has been limited by methodological challenges to evaluate in-vivo joint motion. This study compared six degree-of-freedom patellar motion during a dynamic lunge task between individuals with patellofemoral pain and healthy individuals. Knee joints of eight females with patellofemoral pain and ten healthy females were imaged using a CT scanner in supine lying position, then by a dual-orthogonal fluoroscope while they performed a lunge. Read More

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http://dx.doi.org/10.1002/jor.23887DOI Listing
February 2018
11 Reads

Vastus Lateralis Motor Unit Firing Rate Is Higher in Women With Patellofemoral Pain.

Arch Phys Med Rehabil 2018 05 10;99(5):907-913. Epub 2018 Feb 10.

Department of Physical Therapy, University of British Columbia, Vancouver, BC, Canada; Faculty of Health Sciences, Western University, London, ON, Canada. Electronic address:

Objective: To compare neural drive, determined from motor unit firing rate, in the vastus medialis and lateralis in women with and without patellofemoral pain.

Design: Cross-sectional study.

Setting: University research laboratory. Read More

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http://dx.doi.org/10.1016/j.apmr.2018.01.019DOI Listing
May 2018
11 Reads

[Research progress on the etiology and treatment of patellofemoral pain syndrome].

Authors:
Li-Hua Cui

Zhongguo Gu Shang 2017 Jul;30(7):680-684

Department of Orthopaedics, Binzhou People's Hospital, Binzhou 256600, Shandong, China;

Patellofemoral pain syndrome (PFPS) is one of the most common diseases that cause pain in the knee joint. At present, there is no specific diagnostic measure. The diagnosis of patellofemoral pain syndrome may be considered when imaging is performed without cartilage, ligament and soft tissue injuries. Read More

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http://dx.doi.org/10.3969/j.issn.1003-0034.2017.07.021DOI Listing
July 2017
5 Reads

Knee Pain and the Use of Various Types of Footwear-A Review.

J Knee Surg 2018 Nov 8;31(10):952-964. Epub 2018 Feb 8.

Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland, Ohio.

Knee pain is a highly prevalent condition in the United States with multiple etiologies, with two of the most common sources being osteoarthritis (OA) and patellofemoral pain (PFP). These conditions can lead to reduced physical function and a poor quality of life. Various modalities have been used to decrease the amount of knee pain that individuals' experience; however, they are not always successful and can be expensive. Read More

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http://dx.doi.org/10.1055/s-0038-1626735DOI Listing
November 2018
5 Reads