247 results match your criteria Jumper's Knee

ICON 2020-International Scientific Tendinopathy Symposium Consensus: A Scoping Review of Psychological and Psychosocial Constructs and Outcome Measures Reported in Tendinopathy Clinical Trials.

J Orthop Sports Phys Ther 2022 Jun;52(6):375-388

Objective: To identify and describe the psychological and psychosocial constructs and outcome measures used in tendinopathy research.

Design: Scoping review.

Literature Search: We searched the PubMed, EMBASE, Scopus, Web of Science, PEDro, CINAHL, and APA PsychNet databases on July 10, 2021, for all published studies of tendinopathy populations measuring psychological and psychosocial factors. Read More

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Biomechanical Research on Special Ability of Long Jump Take-Off Muscle Based on Multisource Information Fusion.

Appl Bionics Biomech 2022 7;2022:2556087. Epub 2022 Apr 7.

Capital University of Physical Education and Sports, Beijing 100191, China.

For athletes of different sports, their muscle activities in different sports will show different special characteristics according to different sports. The purpose of this paper is to study the technology of multi-information fusion and to study the athletes of the long jump competition. The relevant research on the muscle specific ability test methods of the athletes in the long jump competition is of great significance to the study of the long jump. Read More

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Knee dynamics during take-off and landing in spike jumps performed by volleyball players with patellar tendinopathy.

J Phys Ther Sci 2022 Feb 23;34(2):103-109. Epub 2022 Feb 23.

Division of Neuroscience, Department of Physiology, Asahikawa Medical University, Japan.

[Purpose] Patellar tendinopathy is a common sports injury. The risk factors for this injury can be categorized as intrinsic, extrinsic, and dynamic. We examined the dynamic factors in this study. Read More

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February 2022

Relationships between tendon structure and clinical impairments in patients with patellar tendinopathy.

J Orthop Res 2022 Jan 7. Epub 2022 Jan 7.

Department of Physical Therapy, University of Delaware, Newark, Delaware, USA.

The clinical relevance of altered tendon structure in patellar tendinopathy is contested since structural change persists after symptom resolution. The purpose of this study was to explore the relationships between tendon structure and clinical impairments in patellar tendinopathy. In this retrospective, secondary analysis of individuals with patellar tendinopathy (n = 41), tendon structure (thickness, cross-sectional area [CSA], shear modulus, and viscosity), symptom severity, lower extremity function (counter-movement jump [CMJ] height), and quadriceps muscle performance (knee extension force and central activation ratio [CAR]) were recorded for the symptomatic limb. Read More

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January 2022

Association of Ankle Dorsiflexion and Landing Forces in Jumping Athletes.

Sports Health 2021 Dec 27:19417381211063456. Epub 2021 Dec 27.

Department of Physical Therapy, Federal University of São Carlos, São Carlos, Brazil.

Background: Dorsiflexion range of motion restriction has been associated with patellar tendinopathy, but the mechanisms of how dorsiflexion restriction could contribute to knee overload remain unknown.

Hypothesis: Peak ankle dorsiflexion and ankle dorsiflexion excursion are negatively associated with peak vertical ground-reaction force (vGRF) and loading rate, and with peak patellar tendon force and loading rate, and positively associated with peak ankle plantar flexor moment.

Study Design: Cross-sectional study. Read More

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December 2021

Preventive effect of tailored exercises on patellar tendinopathy in elite youth athletes: A cohort study.

Phys Ther Sport 2022 Jan 20;53:60-66. Epub 2021 Nov 20.

Tendon Research Group - Brazil, Fortaleza, CE, Brazil; Physical Therapy Department - Universidade Federal Dos Vales Do Jequitinhonha e Mucuri, Brazil; Programa de Pós-Graduação Em Reabilitação e Desempenho Funcional, Universidade Federal Dos Vales Do Jequitinhonha e Mucuri, Diamantina, Brazil. Electronic address:

Objective: To investigate the effects of an intervention with tailored exercises on the incidence of patellar tendinopathy (PT) in elite youth jumping athletes.

Design: Prospective crossover cohort.

Setting: One sport club facility. Read More

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January 2022

Expanded adipose derived mesenchymal stromal cells are effective in treating chronic insertional patellar tendinopathy: clinical and MRI evaluations of a pilot study.

J Exp Orthop 2021 Jul 2;8(1):49. Epub 2021 Jul 2.

Aspetar Qatar Orthopaedic and Sports Medicine Hospital, P.O. Box 29222, Doha, Qatar.

Purpose: Effect of ultrasound guided injections of autologous ASCs in chronic recalcitrant patellar tendinopathy.

Methods: Fourteen patients (16 knees, 12/2 males/females) with chronic, recalcitrant (unsuccessfully treated with nonoperative treatments) insertional PT underwent clinical evaluation and magnetic resonance imaging (MRI) before intervention. Stromal vascular fraction cells (SVF) were expanded by in-vitro culture and characterized by flow cytometry. Read More

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Image-guided intervention in the management of chronic patellar tendinopathy with calcification: a three-pronged approach.

BMJ Case Rep 2021 Jun 11;14(6). Epub 2021 Jun 11.

Radiology, London North West University Healthcare NHS Trust, London, UK.

Patellar tendinopathy is a common cause of knee pain and functional impairment in athletes. It is commonly managed using conservative measures such as physiotherapy, but cases that are refractory to such treatment may require a more invasive approach. Various forms of image-guided injection therapy have been described in the literature. Read More

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The association of patellar tendinosis with patellar maltracking and Hoffa's fat pad impingement: A case-control MRI study.

Clin Imaging 2021 Aug 29;76:180-188. Epub 2021 Apr 29.

Department of Radiology, University of Ottawa, Department of Medical Imaging, The Ottawa Hospital, Ottawa, Ontario K1H 8L6, Canada. Electronic address:

Objectives: To assess whether proximal or distal patellar tendinosis is associated with patellar maltracking parameters and superolateral Hoffa's fat pad impingement.

Methods: Institutional radiology database was reviewed for knee MRI scans performed over a 7-year period identifying cases of unequivocal patellar tendinosis, which were separated into 2 groups: proximal and distal tendinosis. For each group of proximal and distal patellar tendinosis, a control group of age and gender matched subjects was assigned. Read More

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Relationship of Patellofemoral Angles and Tibiofemoral Rotational Angles With Jumper's Knee in Professional Dancers: An MRI Analysis.

Orthop J Sports Med 2021 Mar 16;9(3):2325967120985229. Epub 2021 Mar 16.

Orthopaedic and Spine Center, Istanbul Florence Nightingale Hospital, Istanbul, Turkey.

Background: Jumper's knee is a type of tendinopathy affecting the distal insertion of the quadriceps tendon (25% of cases) or the patellar tendon. It has been shown that frontal-plane measurements, such as genu valgum, genu varum, an increased quadriceps angle, a protuberant tibial tuberosity, patella alta, and short hamstring muscles, may be related to jumper's knee.

Purpose: To investigate the effects of tibiofemoral rotational angles and patellofemoral (PF) angles on the development of jumper's knee in professional folk dancers. Read More

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Pain-guided activity modification during treatment for patellar tendinopathy: a feasibility and pilot randomized clinical trial.

Pilot Feasibility Stud 2021 Feb 25;7(1):58. Epub 2021 Feb 25.

Department of Physical Therapy, University of Delaware, Newark, DE, USA.

Background: Activity modification is a key component of patellar tendinopathy treatment but there is a lack of evidence guiding activity modification prescription. Use of activity modification in treatment studies has varied widely and the impact of those recommendations has not been directly investigated or compared. The purpose of this study was to assess (1) the feasibility of using pain-guided activity modification during treatment for patellar tendinopathy and (2) if our outcome measures are responsive to changes in tendon health over the course of treatment. Read More

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February 2021

Differences in Physical and Psychological Parameters in Sub-Elite, Male, Youth Soccer Players with Jumper's Knee Following Physical Therapy Compared to Healthy Controls: A Longitudinal Examination.

Int J Sports Phys Ther 2021 Feb 1;16(1):114-125. Epub 2021 Feb 1.

University of Duisburg-Essen.

Purpose/background: Many adolescent athletes suffer from jumper's knee (JK) over a long period of time and return to sports before symptoms are fully resolved. Current treatment methods may not reduce pain in the short term, especially not during a competitive season. The purpose of this study was to investigate differences in physical, psychological, and injury-/pain-related parameters in sub-elite male youth soccer players, who previously underwent physical therapy for JK compared to healthy controls (HC) over the course of a season. Read More

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February 2021

The Jumper's Knee - a New Look at Non-surgical Treatment. Pilot Study.

Ortop Traumatol Rehabil 2020 Oct;22(5):347-359

Klinika Ortopedii i Ortopedii Dziecięcej, Uniwersytet Medyczny w Łodzi, Polska / Department of Orthopaedics and Paediatric Orthopaedics, Medical University in Łódź, Poland.

Background: There are many opinions and views regarding the methods of treatment of patellar ligament enthesopathy. No gold standard of treatment exists. This paper presents our approach involving conservative treatment and an appropriate rehabilitation regime. Read More

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October 2020


Int J Sports Phys Ther 2020 Dec;15(6):1184-1195

College of Physical Therapy, George Fox University, Newberg, OR, USA.

Background And Purpose: Patellar tendinopathy is an overuse injury experienced primarily by athletes; especially athletes who participate in sports that involve frequent jumping. Therapeutic exercise is the primary conservative treatment for patients with this condition. However, some patients with patellar tendinopathy may be unable to tolerate the loading that occurs during exercise. Read More

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December 2020

Physical Therapist Management of Anterior Knee Pain.

Curr Rev Musculoskelet Med 2020 Dec 30;13(6):776-787. Epub 2020 Oct 30.

Departments of Orthopedics & Rehabilitation and Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, USA.

Purpose Of Review: Anterior knee pain is a common musculoskeletal complaint among people of all ages and activity levels. Non-operative approaches with an emphasis on physical therapy management are the recommended initial course of care. The purpose of this review is to describe the current evidence for physical therapist management of anterior knee pain with consideration of biomechanical and psychosocial factors. Read More

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December 2020

Rethinking Patellar Tendinopathy and Partial Patellar Tendon Tears: A Novel Classification System.

Am J Sports Med 2020 02 8;48(2):359-369. Epub 2020 Jan 8.

Center for Shoulder, Elbow and Sports Medicine, Columbia University, New York, New York, USA.

Background: Patellar tendinopathy is an overuse injury of the patellar tendon frequently affecting athletes involved in jumping sports. The tendinopathy may progress to partial patellar tendon tears (PPTTs). Current classifications of patellar tendinopathy are based on symptoms and do not provide satisfactory evidence-based treatment guidelines. Read More

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February 2020

Surgical Technique for Chronic Proximal Patellar Tendinopathy (Jumper's Knee).

Arthrosc Tech 2019 Nov 13;8(11):e1389-e1394. Epub 2019 Nov 13.

Hospital São Vicente de Paulo, Rio de Janeiro, Brazil.

Chronic proximal patellar tendinopathy is a challenging condition for its troublesome management in the active patient and difficulty in defining the failure of conservative treatment to indicate surgery. Usually, patients with chronic proximal patellar tendinopathy have already tried several physiotherapeutic modalities and are away from their preferred physical activities for variable periods. The current literature presents some open and even arthroscopic options for treating recalcitrant patellar tendinopathy using a variable magnitude of resources and costs. Read More

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November 2019

Low prevalence of patellar tendon abnormality and low incidence of patellar tendinopathy in female collegiate volleyball players.

Res Sports Med 2020 Apr-Jun;28(2):155-167. Epub 2019 Oct 30.

School of Physical Therapy, George Fox University, Newberg, OR, USA.

The prevalence of patellar tendinopathy has been reported to be as high as 50% in elite male volleyball (VB) players; however, the rate of injury in female collegiate VB athletes is unknown. The purpose of this study was to 1) identify the prevalence of ultrasonographic evidence of patellar tendon abnormality at the start of the preseason in female collegiate VB players; 2) report the incidence of tendinopathy during the season; and 3) determine if the preseason presence of tendon abnormality is associated with onset of disease. One hundred and six female collegiate VB players had both patellar tendons imaged. Read More

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October 2020

Don't forget the jumper's knee in the young sportsman: evaluation of patellar tendinopathy with a high frequency ultrasound probe.

Reumatismo 2019 Oct 24;71(3):160-162. Epub 2019 Oct 24.

Research Laboratory and Academic Division of Clinical Rheumatology, Department of Internal Medicine (Di.M.I.), Polyclinic Hospital San Martino, University of Genova, Italy; Cardinal Ferrari Centre, S. Stefano Rehabilitation, Fontanellato (PR).

Patellar tendinopathy, or Jumper's knee, is a painful knee condition caused by inflammation of the patella tendon. This condition is most frequently observed in subjects who play sports that require repetitive regular jumping. Jumper's knee is frequently misdiagnosed as a minor injury and many athletes, like our patient, keep on training and competing and either tend to ignore the injury or attempt to treat it themselves. Read More

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October 2019

Surgery for patellar tendinopathy (jumper's knee).

Cochrane Database Syst Rev 2019 09 23;9:CD013034. Epub 2019 Sep 23.

University of New South Wales, Liverpool, Australia.

Background: Patellar tendinopathy is an overuse condition that commonly affects athletes. Surgery is usually offered if medical and physical therapies fail to treat it effectively. There is variation in the type of surgery performed for the condition. Read More

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September 2019

Injection therapies for patellar tendinopathy.

Shibili Nuhmani

Phys Sportsmed 2020 05 25;48(2):125-130. Epub 2019 Sep 25.

Department of Physical Therapy, College of Applied Medical Sciences, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia.

Patellar tendinopathy, or jumper's knee is a common musculoskeletal condition characterized by progressive activity-related pain on the anterior aspect of the knee and tenderness on the patellar tendon. A conservative method is often the first choice of treatment, which can include anti-inflammatory medication, injection therapies, physiotherapy, eccentric exercises, extra corporeal shock wave therapy, orthosis, etc. Although there are several treatment options available, the management of patellar tendinopathy is still controversial. Read More

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Internal and External Workload in Youth Basketball Players Who Are Symptomatic and Asymptomatic for Patellar Tendinopathy.

J Orthop Sports Phys Ther 2020 Jul 6;50(7):402-408. Epub 2019 Sep 6.

Objective: To examine the differences in external and internal workload in players with and without patellar tendinopathy.

Design: Nested case-control study.

Methods: Workload was monitored in 152 players (aged 13-18 years) for a 1-week period, including all practices, games, and conditioning sessions. Read More

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Distinguishing Quadriceps Tendinopathy and Patellar Tendinopathy: Semantics or Significant?

J Orthop Sports Phys Ther 2019 09;49(9):627-630

Jumper's knee is not synonymous with patellar tendinopathy. The term includes patellar tendinopathy and quadriceps tendinopathy. Although the patellar and quadriceps tendons work in tandem as part of the extensor mechanism of the knee, they have distinct anatomy and functional roles. Read More

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September 2019

Prevalence of Patellar Tendinopathy and Patellar Tendon Abnormality in Male Collegiate Basketball Players: A Cross-Sectional Study.

J Athl Train 2019 Sep 19;54(9):953-958. Epub 2019 Aug 19.

School of Physical Therapy, George Fox University, Newberg, OR.

Context: Patellar tendinopathy (PT) is a degenerative condition known to affect athletes who participate in sports such as basketball and volleyball. Patellar tendinopathy is a challenging condition to treat and may cause an athlete to prematurely retire from sport. The prevalence of PT in male collegiate basketball players is unknown. Read More

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September 2019

Treatment of patella tendinopathy by distalising tibial tubercle osteotomy.

BMJ Case Rep 2019 Jul 1;12(7). Epub 2019 Jul 1.

Orthopaedics, Lingard Private Hospital, Merewether, New South Wales, Australia.

Patella tendinopathy condition is often resistant to conservative treatment. We report a case of patella tendinopathy treated by distalisation of the tibial tubercle with excellent long-term result. Read More

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Patellar tendon stress between two variations of the forward step lunge.

J Sport Health Sci 2019 May 19;8(3):235-241. Epub 2017 Jan 19.

Department of Kinesiology and Recreation, Illinois State University, Normal, IL 61761, USA.

Background: Patellar tendinopathy (PT) or "jumper's knee" is generally found in active populations that perform jumping activities. Graded exposure of patellar tendon stress through functional exercise has been demonstrated to be effective for the treatment of PT. However, no studies have compared how anterior knee displacement variations during the commonly performed forward step lunge (FSL) affect patellar tendon stress. Read More

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Quadriceps tendinopathy: a review-part 1: epidemiology and diagnosis.

Ann Transl Med 2019 Feb;7(4):71

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

Overuse injuries of the extensor mechanism of the knee are common in both athletes and non-athletes and usually occur during activities associated with repetitive loading, stress, and knee extension. Historically, they have been labeled as Jumper's knee due to the high prevalence seen in the athletic community. In many published reports, the name "patellar tendinopathy" is used to describe this disorder of the quadriceps tendon at the patellar insertion, and the names are often used interchangeably. Read More

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February 2019

Patellar tendon structure responds to load over a 7-week preseason in elite male volleyball players.

Scand J Med Sci Sports 2019 Jul 14;29(7):992-999. Epub 2019 Apr 14.

Center for Human Movement Sciences, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.

The purpose of this study was to investigate the relation between external and internal load and the response of the patellar tendon structure assessed with ultrasound tissue characterization (UTC) in elite male volleyball players during preseason. Eighteen players were followed over 7 weeks, measuring four load parameters during every training and match: volume (minutes played), rating of perceived exertion (RPE) (ranging from 6 to 20), weekly load (RPE*volume), and jump frequency (number of jumps). Patellar tendon structure was measured biweekly using UTC, which quantifies tendon matrix stability resulting in four different echo types (I-IV). Read More

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Bilateral changes in tendon structure of patients diagnosed with unilateral insertional or midportion achilles tendinopathy or patellar tendinopathy.

Knee Surg Sports Traumatol Arthrosc 2020 May 1;28(5):1631-1638. Epub 2019 Apr 1.

Department of Sports and Exercise Medicine, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands.

Purpose: Changes in tendon structure are commonly seen in patients with unilateral achilles (AT) or patellar (PT) tendinopathy but might also be present on the asymptomatic side, indicating a higher risk for developing symptoms. The aim of this study is to compare tendon structure of the symptomatic side with the asymptomatic side in AT and PT patients and control subjects.

Methods: A total of 46 patients with unilateral AT (16 insertional and 30 midportion) and 38 with unilateral PT were included. Read More

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Evaluation of Intrinsic Biomechanical Risk Factors in Patellar Tendinopathy: A Retrospective Radiographic Case-Control Series.

Orthop J Sports Med 2018 Dec 20;6(12):2325967118816038. Epub 2018 Dec 20.

Surgical and Orthopaedic Research Laboratories, Prince of Wales Clinical School, University of New South Wales, Prince of Wales Hospital, Sydney, Australia.

Background: Patellar tendinopathy is an overuse condition often affecting athletes. It has been postulated that patellar tendinopathy is associated with patella alta; however, this and any other anatomic risk factors have not been identified.

Purpose: To explore whether lever arm differences from radiographic measurements exist between patients with and without tendinopathy. Read More

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December 2018