854 results match your criteria Patellofemoral Joint Syndromes


Twelve-Week Gait Retraining Reduced Patellofemoral Joint Stress during Running in Male Recreational Runners.

Biomed Res Int 2020 20;2020:9723563. Epub 2020 Mar 20.

School of Kinesiology, Shanghai University of Sport, Shanghai 200438, China.

Purpose: To explore the changes in knee sagittal angle and moment and patellofemoral joint (PFJ) force and stress before and after 12-week gait retraining.

Methods: A total of 30 healthy male recreational runners were randomized into a control group ( = 15) who ran in their original strike pattern using minimalist shoes or experimental group ( = 15) who ran in a forefoot strike pattern using minimalist shoes during the 12-week gait retraining. The kinematic and kinetic data of the dominant leg of the participants during the 12 km/h running were collected by 3D motion capture systems and 3D force platforms. Read More

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http://dx.doi.org/10.1155/2020/9723563DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7109573PMC

Assessment and Management of Somatic Dysfunctions in Patients With Patellofemoral Pain Syndrome.

J Am Osteopath Assoc 2020 Mar;120(3):165-173

Context: Patellofemoral pain syndrome (PFPS) is one of the most common determinants of knee pain. The causes of PFPS are multifactorial, and most treatment approaches are conservative. There are many kinds of therapy for this syndrome, which are based on building strength, flexibility, proprioception, and endurance. Read More

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http://dx.doi.org/10.7556/jaoa.2020.029DOI Listing

Efficacy and experience of arthroscopic lateral patella retinaculum releasing through/outside synovial membrane for the treatment of lateral patellar compression syndrome.

BMC Musculoskelet Disord 2020 Feb 17;21(1):108. Epub 2020 Feb 17.

Department of Orthopedic Surgery, General Hospital of Central Theater Command, 68 Huangpu Road, Jiangan District, Wuhan, China.

Background: Arthroscopic closure release includes arthroscopic lateral patella retinaculum releasing (LPRR) either outside synovial membrane (OSM) or through synovial membrane (TSM). At present, there is no research to compare the clinical efficacy of the above two methods for the treatment of lateral patellar compression syndrome (LPCS). So, the goal of this study was to investigate the method and overcome of arthroscopic LPRR either OSM or TSM for the treatment of LPCS. Read More

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http://dx.doi.org/10.1186/s12891-020-3130-yDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7026991PMC
February 2020

Importance of imaging in knee pain.

Proc (Bayl Univ Med Cent) 2020 Jan 25;33(1):95-96. Epub 2019 Oct 25.

Department of Family and Community Medicine, Baylor Scott & White Health and Texas A&M Health Science Center College of MedicineTempleTexas.

A 72-year-old woman with a prior history of stage IIIa lung adenocarcinoma was seen with complaints of knee pain, swelling, and difficulty sleeping at night for 1 month. Although mimicking osteoarthritis, patellofemoral syndrome, and iliotibial band syndrome, radiographs showed a lytic lesion suspicious for metastatic disease. The right tibial lesion was excised, saphenous neurolysis was performed, and radiation treatment and four cycles of chemotherapy were administered. Read More

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http://dx.doi.org/10.1080/08998280.2019.1681814DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6988648PMC
January 2020

Patellofemoral Joint Stress during Running with Added Load in Females.

Int J Sports Med 2020 Jun 11;41(6):412-418. Epub 2020 Feb 11.

Department of Health Professions, University of Wisconsin-La Crosse, La Crosse, United States.

Patellofemoral joint (PFJ) pain syndrome is a commonly reported form of pain in female runners and military personnel. Increased PFJ stress may be a contributing factor. Few studies have examined PFJ stress running with added load. Read More

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http://dx.doi.org/10.1055/a-1088-5467DOI Listing

Tensor Fascia Latae Muscle Structure and Activation in Individuals With Lower Limb Musculoskeletal Conditions: A Systematic Review and Meta-Analysis.

Sports Med 2020 May;50(5):965-985

The University of Queensland, School of Health and Rehabilitation Sciences, Brisbane, QLD, 4072, Australia.

Background: Dysfunction of the tensor fascia latae (TFL) muscle is often clinically implicated in many musculoskeletal disorders.

Objective: To systematically review the literature of the TFL muscle to determine whether there are differences in its structure and activation between individuals with and without lower limb musculoskeletal conditions.

Data Sources: A comprehensive search in MEDLINE, EMBASE, CINHAL, and LILACS was undertaken from year of inception to 9 July 2019. Read More

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http://dx.doi.org/10.1007/s40279-019-01251-1DOI Listing

Does Acute Fatigue Negatively Affect Intrinsic Risk Factors of the Lower Extremity Injury Risk Profile? A Systematic and Critical Review.

Sports Med 2020 Apr;50(4):767-784

Human Physiology and Sports Physiotherapy Research Group, Faculty of Physical Education and Physiotherapy, Vrije Universiteit Brussel, Pleinlaan 2, 1050, Brussels, Belgium.

Background: Acute fatigue is hypothesized to alter lower extremity injury risk profiles by affecting intrinsic risk factors (i.e. single leg postural control, hamstring strength). Read More

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http://dx.doi.org/10.1007/s40279-019-01235-1DOI Listing
April 2020
5.038 Impact Factor

When to Add Lateral Soft Tissue Balancing?

Sports Med Arthrosc Rev 2019 Dec;27(4):e25-e31

Brigham and Woman's Hospital, Harvard Medical School, Boston, MA.

Lateral patellofemoral (PF) soft tissue abnormalities range from excessive lateral PF tightness (lateral patellar compression syndrome, lateral patellar instability and arthritis), to excessive laxity (iatrogenic lateral PF soft tissue insufficiency postlateral release). The lateral soft tissue complex is composed of the iliotibial band extension to the patella, the vastus lateralis tendon, the lateral PF ligament, lateral patellotibial ligament, and lateral patellomeniscal ligament, with intimate connections between those structures. To identify lateral retinaculum tightness or insufficiency the most important tests are the patellar glide test and patellar tilt test. Read More

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http://dx.doi.org/10.1097/JSA.0000000000000268DOI Listing
December 2019
1 Read

A 10% Increase in Step Rate Improves Running Kinematics and Clinical Outcomes in Runners With Patellofemoral Pain at 4 Weeks and 3 Months.

Am J Sports Med 2019 12 28;47(14):3406-3413. Epub 2019 Oct 28.

School of Health Sciences, University of Salford, Salford, UK.

Background: Aberrant frontal-plane hip and pelvis kinematics have been frequently observed in runners with patellofemoral pain (PFP). Gait retaining interventions have been shown to improve running kinematics and may therefore be beneficial in runners with PFP.

Purpose: To investigate whether a 10% increase in the running step rate influences frontal-plane kinematics of the hip and pelvis as well as clinical outcomes in runners with PFP. Read More

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http://dx.doi.org/10.1177/0363546519879693DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6883353PMC
December 2019
1 Read

The reliability, validity, interpretability, and responsiveness of the Norwegian version of the Anterior Knee Pain Scale in patellofemoral pain.

Disabil Rehabil 2019 Oct 4:1-10. Epub 2019 Oct 4.

Department of Research & Innovation, Helse Fonna , Haugesund , Norway.

To determine the reliability, validity, responsiveness, and interpretability of the Norwegian Anterior Knee Pain Scale (AKPS) in patients with patellofemoral pain (PFP). The AKPS was translated into Norwegian. One hundred and twelve patients with PFP participated in a randomized controlled trial. Read More

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http://dx.doi.org/10.1080/09638288.2019.1671499DOI Listing
October 2019
1 Read

Dynamic knee valgus kinematics and their relationship to pain in women with patellofemoral pain compared to women with chronic hip joint pain.

J Sport Health Sci 2019 Sep 18;8(5):486-493. Epub 2017 Aug 18.

Program in Physical Therapy, Department of Physical Therapy and Athletic Training, Saint Louis University, St. Louis, MO 63104, USA.

Background: Dynamic knee valgus (DKV) is an abnormal movement pattern visually characterized by excessive medial movement of the lower extremity during weight bearing. Differences in hip and knee kinematic components of DKV may explain the emergence of different pain problems in people who exhibit the same observed movement impairment. Using a secondary analysis of exiting data sets, we sought to determine whether hip and knee frontal and transverse plane angles during a functional task differed between women with patellofemoral pain and women with chronic hip joint pain, and the relationship between joint-specific kinematics and pain in these 2 pain populations. Read More

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http://dx.doi.org/10.1016/j.jshs.2017.08.001DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6738932PMC
September 2019
5 Reads

Added Value of Gluteus Medius and Quadratus Lumborum Dry Needling in Improving Knee Pain and Function in Female Athletes With Patellofemoral Pain Syndrome: A Randomized Clinical Trial.

Arch Phys Med Rehabil 2020 02 26;101(2):265-274. Epub 2019 Aug 26.

Physical Therapy Department, School of Rehabilitation Sciences, Shiraz University of Medical Sciences, Shiraz, Iran; Rehabilitation Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran. Electronic address:

Objective: To compare the effects of exercise therapy alone and exercise therapy plus gluteus medius (GM) and quadratus lumbarum (QL) dry needling on pain and function in female athletes with patellofemoral pain (PFP).

Design: Single-blind randomized controlled trial with follow-up.

Setting: Physiotherapy clinic. Read More

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http://dx.doi.org/10.1016/j.apmr.2019.07.009DOI Listing
February 2020
1 Read

Bilateral Medial and Lateral Patellofemoral Ligament Reconstruction in a Patient with Hypermobility Type Ehlers-Danlos Syndrome: A Case Report.

JBJS Case Connect 2019 Jul-Sep;9(3):e0359

Department of Orthopaedics, West Virginia University, Morgantown, West Virginia.

Case: Medial patellar instability (MPI) is a known sequela of previous lateral retinacular release. Literature on surgical intervention is scarce. We present a case of a 35-year-old woman with hypermobility type Ehlers-Danlos syndrome, with bilateral iatrogenic MPI (IMPI) and lateral patellar instability. Read More

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http://dx.doi.org/10.2106/JBJS.CC.18.00359DOI Listing
June 2020
4 Reads

Kinematics and muscle forces in women with patellofemoral pain during the propulsion phase of the single leg triple hop test.

Gait Posture 2019 09 11;73:108-115. Epub 2019 Jul 11.

Biomedical Engineering Program, COPPE, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.

Background: Approximately 25% of orthopedic knee conditions are related to patellofemoral pain (PFP), with young women being the most affected. It is thought that this condition is associated with modifications in the kinematics and muscle control patterns of the lower limb during weight-bearing support activities, which increases femur movement under the patella.

Objectives: To compare kinematics and muscle induced acceleration patterns between PFP subjects and healthy controls during the preparation phase of the single leg triple hop test. Read More

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http://dx.doi.org/10.1016/j.gaitpost.2019.07.193DOI Listing
September 2019
2 Reads

Patellar complications following total knee arthroplasty: a review of the current literature.

Eur J Orthop Surg Traumatol 2019 Dec 13;29(8):1605-1615. Epub 2019 Jul 13.

Division of Trauma and Orthopaedics, Department of Surgery, Addenbrooke's Hospital, Cambridge, CB2 0QQ, UK.

Total knee arthroplasty is a common operation for treating patients with end-stage knee osteoarthritis and generally has a good outcome. There are several complications that may necessitate revision of the implants. Patella-related complications are difficult to treat, and their consequences impact the longevity of the implanted joint and functional outcomes. Read More

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http://link.springer.com/10.1007/s00590-019-02499-z
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http://dx.doi.org/10.1007/s00590-019-02499-zDOI Listing
December 2019
5 Reads

Association Between Self-reported Measures, Physical Examination, and Early Magnetic Resonance Imaging Signs of Osteoarthritis in Patients With Patellofemoral Pain.

J Orthop Sports Phys Ther 2019 09 10;49(9):634-639. Epub 2019 Jul 10.

Background: Structural abnormalities associated with osteoarthritis (OA) are found in some patients with patellofemoral pain (PFP).

Objectives: To investigate the association between early signs of OA on magnetic resonance imaging (MRI) and characteristics from self-reported measures and physical examination in patients with PFP.

Methods: This exploratory study included data from patients with PFP from a previously published cross-sectional case-control study (n = 64; 55% female; mean ± SD age, 23. Read More

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http://dx.doi.org/10.2519/jospt.2019.8889DOI Listing
September 2019
3 Reads

Effects of neuromuscular training on pain intensity and self-reported functionality for patellofemoral pain syndrome in runners: study protocol for a randomized controlled clinical trial.

Trials 2019 Jul 9;20(1):409. Epub 2019 Jul 9.

Department of Sport Rehabilitation, Shanghai University of Sport, 399 Changhai RD, Shanghai, China.

Background: Patellofemoral pain syndrome (PFPS) is common and affects approximately 15% of individuals at different ages and activity levels. As a non-surgical intervention, physiotherapy is widely used to treat PFPS. Neuromuscular training exercise is one of the most effective methods for decreasing musculoskeletal pain and improving knee function. Read More

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http://dx.doi.org/10.1186/s13063-019-3503-4DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6617607PMC
July 2019
4 Reads

Development and evaluation of a minimally aggressive method of patellofemoral osteoarthritis surgical treatment.

J Orthop Surg (Hong Kong) 2019 May-Aug;27(2):2309499019859441

1 Department of Traumatology and Orthopaedics, Semey State Medical University, Semey, Republic of Kazakhstan.

Purpose: The purpose of this study was to assess the impact of developed minimally invasive operation such as the partial lateral facetectomy (PLFE) with patella thickness resection in patients with lateral patellofemoral (PF) osteoarthritis on short-term clinical and radiographic outcomes.

Methods: This is a prospective study of 27 knees in 27 patients (18 females and 9 males, mean aged at surgery 59.1-year old) whom a PLFE with patella thickness resection using developed minimally invasive method was performed. Read More

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http://dx.doi.org/10.1177/2309499019859441DOI Listing
April 2020
8 Reads

Cycling with Low Saddle Height is Related to Increased Knee Adduction Moments in Healthy Recreational Cyclists.

Eur J Sport Sci 2019 Jul 16:1-7. Epub 2019 Jul 16.

a Key Laboratory of Exercise and Health Sciences of the Ministry of Education , Shanghai University of Sport , Shanghai , People's Republic of China.

Bicycle saddle height configurations have been shown to affect knee joint biomechanics. Research suggests that an excessively low saddle height may lead to Patellofemoral Pain Syndrome, which is thought to be caused by the knee adduction moment during cycling. However, how saddle heights affect frontal plane knee biomechanics was not clear. Read More

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http://dx.doi.org/10.1080/17461391.2019.1635651DOI Listing
July 2019
3 Reads

Static patella tilt and axial engagement in knee extension are mainly influenced by knee torsion, the tibial tubercle-trochlear groove distance (TTTG), and trochlear dysplasia but not by femoral or tibial torsion.

Knee Surg Sports Traumatol Arthrosc 2020 Mar 2;28(3):952-959. Epub 2019 Jul 2.

Department of Trauma Surgery, Medical University Innsbruck, Innsbruck, Austria.

Purpose: The aim of this study was to investigate the association of femoral (FT), tibial (TT), and knee torsion (KT) on the patella tilt (PT), the axial engagement index (AEI), and the tibial tuberosity-trochlear groove distance (TTTG).

Methods: Femoral torsion, tibial torsion, knee torsion, patella tilt, the axial engagement index, the TTTG, and trochlear dysplasia were retrospectively evaluated on 59 patients suffering from recurrent patella instability or anterior knee pain with 118 torsional lower limb magnetic resonance imaging studies.

Results: FT and TT did not show any significant associations with TTTG, PT, and AEI (n. Read More

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http://link.springer.com/10.1007/s00167-019-05588-y
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http://dx.doi.org/10.1007/s00167-019-05588-yDOI Listing
March 2020
4 Reads

Effect of a Commercially Available Footwear Insole on Biomechanical Variables Associated With Common Running Injuries.

Clin J Sport Med 2019 07;29(4):341-343

Biomedical Engineering Program, Schulich School of Engineering, University of Calgary, Calgary, AB, Canada.

Objective: To determine whether Dr. Scholl's Active Series (DSAS) footwear insoles alter biomechanical variables associated with running injuries.

Design: Randomized, controlled experiment. Read More

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http://dx.doi.org/10.1097/JSM.0000000000000536DOI Listing
July 2019
15 Reads

Toward the Development of Data-Driven Diagnostic Subgroups for People With Patellofemoral Pain Using Modifiable Clinical, Biomechanical, and Imaging Features.

J Orthop Sports Phys Ther 2019 07 18;49(7):536-547. Epub 2019 Jun 18.

Background: Unfavorable treatment outcomes for people with patellofemoral pain (PFP) have been attributed to the potential existence of subgroups that respond differently to treatment.

Objectives: This study aimed to identify subgroups within PFP by combining modifiable clinical, biomechanical, and imaging features and exploring the prognosis of these subgroups.

Methods: This was a longitudinal cohort study, with baseline cluster analyses. Read More

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http://dx.doi.org/10.2519/jospt.2019.8607DOI Listing
July 2019
1 Read

Pressure pain thresholds in adults with patellofemoral pain and patellofemoral joint osteoarthritis: a case-control study.

Scand J Pain 2019 Jun 12. Epub 2019 Jun 12.

Centre for Sports and Exercise Medicine, Queen Mary University of London, London, UK.

Background and aims Patellofemoral pain (PFP) and patellofemoral joint osteoarthritis (PFJOA) are common non-self-limiting conditions causing significant pain and disability. The underlying pain pathologies lack consensus with evidence suggesting reduced pressure pain thresholds (PPTs) in adolescent females with PFP and individuals with knee osteoarthritis. A paucity of evidence exists for mixed-sex adults with PFP and PFJOA in isolation. Read More

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http://dx.doi.org/10.1515/sjpain-2019-0026DOI Listing
June 2019
5 Reads

Effects of Core Neuromuscular Training on Pain, Balance, and Functional Performance in Women With Patellofemoral Pain Syndrome: A Clinical Trial.

J Chiropr Med 2019 Mar 10;18(1):9-18. Epub 2019 Feb 10.

Department of Physiotherapy, School of Rehabilitation Sciences, Shiraz University of Medical Sciences, Shiraz, Fars, Iran.

Objective: The purpose of this study was to determine the effects of core neuromuscular training on pain, balance, and performance in women with patellofemoral pain syndrome (PFPS).

Methods: This randomized single-blind trial was based on a convenience sample of 28 women with unilateral PFPS. All participants were assigned randomly to the intervention or control group with a block randomization method. Read More

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http://dx.doi.org/10.1016/j.jcm.2018.07.006DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6522640PMC
March 2019
6 Reads

Electromyographic activity of the quadriceps and gluteus medius muscles during/different straight leg raise and squat exercises in women with patellofemoral pain syndrome.

J Electromyogr Kinesiol 2019 Oct 3;48:17-23. Epub 2019 Jun 3.

Augusto Motta University Center (UNISUAM), Brazil.

Patellofemoral pain syndrome (PPS) is characterized by anterior knee pain and affects young female adults. Physiotherapy is the most indicated treatment. The objective of the study was to analyze electromyographic activity of the quadriceps and gluteus medius muscles during different open and closed kinetic chain exercises in women with PPS. Read More

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http://dx.doi.org/10.1016/j.jelekin.2019.05.017DOI Listing
October 2019
6 Reads

Influence of the Powers™ strap on pain and lower limb biomechanics in individuals with patellofemoral pain.

Knee 2019 Dec 4;26(6):1210-1219. Epub 2019 Jun 4.

School of Health Science, University of Salford, Salford, UK.

Background: Abnormal biomechanics, especially hip internal rotation and adduction are known to be associated with patellofemoral pain (PFP). The Powers™ strap was designed to decrease hip internal rotation and to thereby stabilise the patellofemoral joint.

Objectives: This study aimed to investigate whether the Powers™ strap influenced pain and lower limb biomechanics during running and squatting in individuals with PFP. Read More

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http://dx.doi.org/10.1016/j.knee.2019.03.005DOI Listing
December 2019
9 Reads

Activity Modification and Load Management of Adolescents With Patellofemoral Pain: A Prospective Intervention Study Including 151 Adolescents.

Am J Sports Med 2019 06 16;47(7):1629-1637. Epub 2019 May 16.

Sports Orthopedic Research Center-Copenhagen, Department of Orthopaedic Surgery, Copenhagen University Hospital, Amager-Hvidovre, Denmark.

Background: Patellofemoral pain (PFP) affects 7% of adolescents, especially those who are highly active. Exercise-focused treatments show limited effect and overlook activity modification and load management. As many adolescents continue at high levels of sports despite pain, a new strategy addressing this problem is warranted. Read More

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http://dx.doi.org/10.1177/0363546519843915DOI Listing
June 2019
19 Reads

Neurodynamic tests for patellofemoral pain syndrome: a pilot study.

Chiropr Man Therap 2019 8;27:26. Epub 2019 May 8.

3Department of Global Public Health and Primary Care, University of Bergen, Postboks 7804, 5020 Bergen, Norway.

Background: Patellofemoral pain syndrome (PFPS) is a common musculoskeletal disorder. There is little consensus on the etiology, but one explanatory model suggests that PFPS can be caused by referred pain. Neurodynamic tests are used to explore the mechanosensitivity of peripheral nerves, and previous studies have shown a relationship between increased mechanosensitivity and anterior knee pain by using the femoral slump test (FST). Read More

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http://dx.doi.org/10.1186/s12998-019-0242-2DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6505079PMC
January 2020
6 Reads

The Effect of Valgus Control Instruction Exercises on Pain, Strength, and Functionality in Active Females With Patellofemoral Pain Syndrome.

Sports Health 2019 May/Jun;11(3):223-237. Epub 2019 Apr 29.

Department of Biomechanics and Sport Injuries, Faculty of Physical Education and Sport Sciences, Kharazmi University, Tehran, Republic of Iran.

Background: Patellofemoral pain syndrome (PFPS) is sometimes related to excessive hip adduction and internal rotation, as well as knee valgus during weightbearing activities in females. Research on injury prevention and rehabilitation strategies has shown the positive effects of valgus control instruction (VCI) exercise programs in training.

Hypothesis: A VCI program would result in a positive change in pain, eccentric hip muscle torque, and performance in females with PFPS. Read More

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http://journals.sagepub.com/doi/10.1177/1941738119837622
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http://dx.doi.org/10.1177/1941738119837622DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6537321PMC
June 2019
19 Reads

Research Methods and Progress of Patellofemoral Joint Kinematics: A Review.

J Healthc Eng 2019 24;2019:9159267. Epub 2019 Mar 24.

Orthopedics Department, Peking University International Hospital, Life Park 1, Zhongguancun Life Science Park, Changping District, Beijing, China.

Patellofemoral pain syndrome has a high morbidity, and its pathology is closely associated with patellofemoral joint kinematics. A series of and studies have been conducted to explore patellofemoral kinematics, and the findings are relevant to the diagnosis, classification, and management of patellofemoral diseases and even the whole knee joint. However, no definite conclusion on normal patellofemoral kinematics has been established. Read More

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https://www.hindawi.com/journals/jhe/2019/9159267/
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http://dx.doi.org/10.1155/2019/9159267DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6451817PMC
March 2019
26 Reads

Gluteal muscle inhibition: Consequences of patellofemoral pain?

Med Hypotheses 2019 May 27;126:9-14. Epub 2019 Feb 27.

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

Muscle weakness is a common impairment in females with patellofemoral pain (PFP), clinically seen in both the quadriceps and gluteal muscles. These weaknesses have been suggested to result in poor movement patterns, which results in the clinical presentation of pain due to increased stress on the patellofemoral joint. While quadriceps weakness have been identified as a risk factor for the development of PFP, prospective studies have not found gluteal muscle weakness to be a risk factor. Read More

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http://dx.doi.org/10.1016/j.mehy.2019.02.046DOI Listing
May 2019
10 Reads

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
March 2019
7 Reads

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
28 Reads

Effect of patellofemoral pain on foot posture and walking kinematics.

Gait Posture 2019 05 18;70:361-369. Epub 2019 Mar 18.

Centre of Human & Aerospace Physiological Sciences, Faculty of Life Sciences & Medicine, King's College London, London, UK.

Background Excessive pronation has been implicated in patellofemoral pain (PFP) aetiology and foot orthoses are commonly prescribed for PFP patients. Pronation can be assessed using foot posture tests, however, the utility of such tests depends on their association with foot and lower-limb kinematics. Research questions Do PFP participants compared with healthy participants (1) have a more pronated foot measured with static foot tests and a kinematic multi-segmental foot model and (2) is there an association between static foot posture and foot and lower limb kinematics during walking? Methods A case-control study including 22 participants (n = 11 PFP, 5 females per group, aged 24 ± 3 (mean ± SD) years) was conducted. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S09666362183056
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http://dx.doi.org/10.1016/j.gaitpost.2019.03.014DOI Listing
May 2019
26 Reads

Effectiveness of Isolated Hip Exercise, Knee Exercise, or Free Physical Activity for Patellofemoral Pain: A Randomized Controlled Trial.

Am J Sports Med 2019 05 8;47(6):1312-1322. Epub 2019 Apr 8.

Department of Orthopedic Surgery, Sørlandet Hospital Kristiansand, Kristiansand, Norway.

Background: Exercise for patellofemoral pain (PFP) is traditionally knee focused, targeting quadriceps muscles. In recent years, hip-focused exercise has gained popularity. Patient education is likely an important factor but is underresearched. Read More

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http://journals.sagepub.com/doi/10.1177/0363546519830644
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http://dx.doi.org/10.1177/0363546519830644DOI Listing
May 2019
29 Reads

Clinical and Radiological Predictors of Functional Outcome After Isolated Medial Patellofemoral Ligament Reconstruction at Midterm Follow-up.

Am J Sports Med 2019 05 3;47(6):1338-1345. Epub 2019 Apr 3.

Department of Orthopaedic Surgery, University Hospital of Saint Étienne, Saint Étienne, France.

Background: Isolated medial patellofemoral ligament reconstruction (iMPFLR) is increasingly used for the surgical treatment of recurrent patellofemoral instability.

Purpose: The purpose of this study was to identify the clinical and radiological predictors that can significantly influence the functional outcomes after an iMPFLR.

Study Design: Case series; Level of evidence, 4. Read More

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http://dx.doi.org/10.1177/0363546519831294DOI Listing
May 2019
9 Reads

[Knee pain in children and adolescents].

Ugeskr Laeger 2019 Mar;181(13)

Knee pain is common among children and adolescents, and the most usual knee conditions are patellofemoral pain and Osgood-Schlatter disease. Long-standing knee pain often leads to reduced physical activity levels, and one in two continue to experience knee pain for years. Education of the patients and strategies to improve the ability of them to manage knee pain should be the mainstay of treatment for these types of knee pain. Read More

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March 2019
21 Reads

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 2020
7 Reads

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
7 Reads

Clinical results of pulsed signal therapy on patellofemoral syndrome with patellar chondropathy.

Bioelectromagnetics 2019 Feb 14;40(2):83-90. Epub 2019 Feb 14.

Faculdade de Medicina, Hospital das Clinicas HCFMUSP, Universidade de Sao Paulo, Sao Paulo, Brazil.

This study was designed to evaluate the effect of pulsed signal therapy (PST) on patellofemoral pain syndrome associated with patellar chondropathy. A prospective randomized double-blind placebo controlled trial included 25 patients (41 knees) between 20 and 50 years with pain due to isolated patellofemoral syndrome with chondropathy. PST group received nine 60-min daily sessions of PST treatment. Read More

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http://dx.doi.org/10.1002/bem.22172DOI Listing
February 2019
9 Reads

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

Skeletal Radiol 2019 Aug 4;48(8):1251-1259. 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
August 2019
11 Reads

How does acute pain influence biomechanics and quadriceps function in individuals with patellofemoral pain?

Knee 2019 Mar 31;26(2):330-338. Epub 2019 Jan 31.

School of Health Science, University of Salford, Salford, UK. Electronic address:

Objectives: Beside pathophysiological factors, pain is believed to play a crucial role in the progression of patellofemoral pain (PFP). However, the isolated effect of pain on biomechanics and quadriceps function has not been investigated in PFP. Thus, this study aimed to investigate the effect of pain on quadriceps function and lower limb biomechanics in individuals with PFP. Read More

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http://dx.doi.org/10.1016/j.knee.2018.12.008DOI Listing
March 2019
7 Reads

Electromyographic activity of the hip and knee muscles during functional tasks in males with and without patellofemoral pain.

J Bodyw Mov Ther 2019 Jan 9;23(1):54-58. Epub 2018 Nov 9.

Department of Statistical Research and Information Technology, Institute for Research and Planning in Higher Education, Tehran, Iran.

Background: Patellofemoral pain (PFP) is a common overuse injury in physically active individuals. It is characterized by anterior knee, retropatellar, or prepatellar pain associated with activities that increase patellofemoral joint stress such as squatting, stair ascending and descending, running, jumping, prolonged sitting, and kneeling. The etiology of PFP is believed to be multifactorial. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S13608592183045
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http://dx.doi.org/10.1016/j.jbmt.2018.11.001DOI Listing
January 2019
12 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/
Publisher Site
http://dx.doi.org/10.1155/2018/3583049DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6323454PMC
December 2018
12 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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June 2019
12 Reads

Is there a correlation in frontal plane knee kinematics between running and performing a single leg squat in runners with patellofemoral pain syndrome and asymptomatic runners?

Clin Biomech (Bristol, Avon) 2019 01 14;61:227-232. Epub 2018 Dec 14.

College of Health and Life Sciences, Brunel University London, Mary Seacole Building, Kingston Lane, Uxbridge UB8 3PH, United Kingdom; Therapy Department, Chelsea and Westminster Hospital NHS Foundation Trust, 369 Fulham Rd, London SW10 9NH, United Kingdom. Electronic address:

Background: Knee kinematics when running, specifically knee valgus, have been linked to patellofemoral pain syndrome. Assessing running biomechanics requires skill, equipment and time. Clinically, the single leg squat is used to make inferences about knee kinematics during running. Read More

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http://dx.doi.org/10.1016/j.clinbiomech.2018.12.008DOI Listing
January 2019
7 Reads

Patellofemoral Pain Syndrome.

Am Fam Physician 2019 01;99(2):88-94

Dwight D. Eisenhower Army Medical Center, Fort Gordon, GA, USA.

Patellofemoral pain syndrome (PFPS) is one of the most common causes of anterior knee pain encountered in the outpatient setting in adolescents and adults younger than 60 years. The incidence in the United States is between 3% and 6%. The cardinal feature of PFPS is pain in or around the anterior knee that intensifies when the knee is flexed during weight-bearing activities. Read More

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January 2019
17 Reads

Females with patellofemoral pain have impaired impact absorption during a single-legged drop vertical jump.

Gait Posture 2019 02 10;68:346-351. Epub 2018 Dec 10.

Department of Physiotherapy, São Carlos Federal University, São Carlos, Brazil.

Background: Females with patellofemoral pain (PFP) have been reported to land with altered biomechanics in some, but not all studies. Kinematic alterations previously reported may indicate, and relate to potential impairments in absorbing impact.

Research Question: To compare vertical ground reaction force (vGRF) and lower limb kinematics during single-legged drop vertical jumps in females with and without PFP; and establish the relationship between vGRF and kinematics during this task. Read More

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http://dx.doi.org/10.1016/j.gaitpost.2018.12.013DOI Listing
February 2019
7 Reads

Cost-effectiveness of treatments for non-osteoarthritic knee pain conditions: A systematic review.

PLoS One 2018 19;13(12):e0209240. Epub 2018 Dec 19.

Center for General Practice at Aalborg University, Aalborg, Denmark.

Introduction: Knee pain is common in adolescents and adults and is associated with an increased risk of developing knee osteoarthritis. The aim of this systematic review was to gather and appraise the cost-effectiveness of treatment approaches for non-osteoarthritic knee pain conditions.

Method: A systematic review was conducted according to the PRISMA guidelines and registered on PROSPERO (CRD42016050683). Read More

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0209240PLOS
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6300294PMC
May 2019
9 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
5 Reads