243 results match your criteria Jumper's Knee
J Sci Med Sport 2018 Sep 27. Epub 2018 Sep 27.
Department of Sport Science, University of Innsbruck, Austria; Research Center Snow, Ski, and Alpine Sports, Austria.
Objectives: In winter terrain parks special airbags are used for skiers and snowboarders to practice jumps and achieve safe landings. However, in 2010 two skiers landed at the end of oval airbags. One suffered fatal, the other severe, injuries. Read More
J Sport Health Sci 2017 Sep 22;6(3):365-371. Epub 2016 Jan 22.
Department of Basic Psychology and Methodology, University of Murcia, Murcia 30100, Spain.
Background: The Victorian Institute of Sport Assessment-Patella (VISA-P) scale is the most condition-specific patient-reported outcome measure used to assess symptom severity in athletes with patellar tendinopathy. Previous exploratory factor analyses have been conducted to evaluate the scale's dimensionality, with inconsistent results, and the factor structure of the scale remains unclear. The aims of the present study were to determine the factorial structure of the VISA-P scale using confirmatory factor analysis (CFA) and test measurement invariance across sexes. Read More
Clin J Sport Med 2018 Oct 19. Epub 2018 Oct 19.
Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada.
Objectives: To examine potential intrinsic risk factors that may contribute to the onset of jumper's knee in elite level-male volleyball players.
Design: Prospective Cohort Study.
Setting: Varsity and National team volleyball gymnasiums. Read More
Int J Sport Nutr Exerc Metab 2018 Oct 9:1-18. Epub 2018 Oct 9.
1 Department of Neurobiology, Physiology and Behavior, Department of Physiology and Membrane Biology, University of California Davis, Davis, CA.
Patellar tendinopathy is one of the most common afflictions in jumping sports. This case study outlines the rehabilitation of a professional basketball player diagnosed by MRI with a central core patellar tendinopathy within the proximal enthesis. The player undertook a nutrition and strength based rehabilitation program combining gelatin ingestion and heavy isometric loading of the patella designed to produce significant stress relaxation as part of their competition schedule and a whole body training plan. Read More
Phys Ther Sport 2018 Nov 18;34:105-112. Epub 2018 Sep 18.
Faculty of Physical Activity and Sport Science, Polytechnic University of Madrid, Spain.
Study Design: A retrospective study.
Introduction: Patellar tendinopathy (PT) or jumper's knee (JK) in elite athletes is a challenging condition for sports medicine professionals. This study analyzes the development of a protocol using eccentric, isometric, concentric exercises, and electrostimulation to treat elite athletes suffering from JK. Read More
Phys Sportsmed 2018 11 5;46(4):477-484. Epub 2018 Sep 5.
b The Micheli Center for Sports Injury Prevention , Waltham , MA , USA.
Objective: To investigate the prevalence of hypoechoic areas by US and its' association with VISA-P scores among asymptomatic jumpers while highlighting sex comparisons.
Design: Cross-sectional study.
Setting: Pre-participation exam at a National Collegiate Athletic Association (NCAA) division I college. Read More
Prosthet Orthot Int 2018 Aug 13:309364618791619. Epub 2018 Aug 13.
Department of Physical Therapy, Faculty of Social Welfare & Health Studies, University of Haifa, Haifa, Israel.
Background: Infrapatellar strapping is a treatment technique used in various knee pathologies; however, its effect on pain and functional performance among young athletes has not been studied.
Objectives: To evaluate the effect of infrapatellar strap on pain and jumping performance among young athletes diagnosed with patellar tendinopathy.
Study Design: Pre-/post-test (within-subject research design). Read More
J Orthop Res 2018 Aug 3. Epub 2018 Aug 3.
Surgical and Orthopaedic Research Laboratory, Prince of Wales Clinical School University of New South Wales, Sydney 2052, Australia.
The term jumpers knee for patella tendinitis, as coined by Dr. Martin Blazina, is now commonly referred to as tendinopathy. He believed it was associated with patella alta. Read More
Scand J Med Sci Sports 2018 Nov 18;28(11):2293-2298. Epub 2018 Jul 18.
Aspetar Orthopaedic, Sports Medicine Hospital, Doha, Qatar.
Training volume has been associated with jumper's knee in volleyball players, but jump variability among professionals has not been investigated and individual jump demands are unknown. The purpose of this study was to examine position-specific jump demands required for training and competition during a professional volleyball season and to investigate the individual variability associated with jump load. Jumps performed by 14 professional players during one season of training and competition were timestamped, individually assigned, and recorded for jump height. Read More
Knee Surg Sports Traumatol Arthrosc 2018 Dec 27;26(12):3553-3559. Epub 2018 May 27.
Department of Orthopedics and Trauma Surgery, University Medical Center Freiburg, Faculty of Medicine, Albert-Ludwigs-University of Freiburg, Hugstetter Strasse 55, 79106, Freiburg, Germany.
Purpose: Return to sports rates in amateur and professional athletes with chronic patellar tendinopathy following arthroscopic patellar release are unpredictable. The present study aims to analyse the effectiveness of arthroscopic patellar release in professional compared to amateur athletes.
Methods: A total of 34 amateur and 20 professional athletes with chronic patellar tendinopathy, refractory to conservative treatment, were studied prospectively and underwent arthroscopic tendon release at the inferior patellar pole. Read More
J Orthop Sports Phys Ther 2018 Sep 23;48(9):676-684. Epub 2018 May 23.
Background Investigations on the causes of patellar tendinopathy should consider impairments at the hip and foot/ankle because they are known to influence movement patterns and affect patellar tendon loading. Objectives To investigate hip and foot/ankle impairments associated with patellar tendinopathy in volleyball and basketball athletes using classification and regression tree analysis. Methods In this clinical measurement, cross-sectional study, 192 athletes were assessed for impairments of the hip and foot/ankle, including shank-forefoot alignment, dorsiflexion range of motion (ROM), iliotibial band flexibility, passive hip internal rotation ROM, and hip external rotator and hip abductor isometric strength. Read More
J Orthop Sports Phys Ther 2018 Oct 27;48(10):758-766. Epub 2018 Apr 27.
Background: To engage clinicians in diagnosing patellar tendinopathy in large surveillance studies is often impracticable. The Oslo Sports Trauma Research Centre-patellar tendinopathy (OSTRC-P) questionnaire, a self-report measure adapted from the OSTRC questionnaire, may provide a viable alternative.
Objectives: To evaluate the diagnostic accuracy of the OSTRC-P questionnaire in detecting patellar tendinopathy in youth basketball players when compared to clinical evaluation. Read More
Praxis (Bern 1994) 2018 Apr;107(9-10):513-519
1 Abteilung für Orthopädie, Universitätsklinik Balgrist, Zürich.
Scand J Med Sci Sports 2018 Sep 3;28(9):2035-2041. Epub 2018 May 3.
La Trobe Sport and Exercise Medicine Research Centre, La Trobe University, Melbourne, Vic., Australia.
Patellar tendinopathy (tendon pain and dysfunction), or jumper's knee, is prevalent in adult jumping athletes. Pathology in the proximal patellar tendon is a key risk factor for developing patellar tendinopathy. When pathology develops in the proximal patellar tendon is not known, although it is reported to exist in adolescent athletes. Read More
Am J Sports Med 2018 Mar 1:363546518759674. Epub 2018 Mar 1.
Nano-Biotechnology Laboratory, Rizzoli Orthopaedic Institute, Via Di Barbiano, Bologna, Italy.
Background: Patellar tendinopathy is a condition characterized by anterior knee activity-related pain. It has a high incidence among athletes engaged in jumping sports and may become a chronic condition. Nonoperative management is the first choice in these patients, and several nonsurgical treatment options have been proposed. Read More
Muscles Ligaments Tendons J 2017 Apr-Jun;7(2):306-314. Epub 2017 Sep 18.
La Trobe Sport and Exercise Medicine Research Centre, La Trobe University, Melbourne, Victoria, Australia.
Background: It is unknown how and when the proximal attachment of the patellar tendon matures; puberty may be key in ensuring normal tendon formation. The aim of this study was to investigate the features of the proximal patellar tendon attachment at different stages of skeletal maturity, to help gain an understanding of how and when the tendon attachment matures.
Methods: Sixty adolescent elite ballet students (ages 11-18) and eight mature adults participated. Read More
Scand J Med Sci Sports 2018 Apr 13;28(4):1443-1450. Epub 2018 Feb 13.
Department of Orthopaedic Surgery, Balgrist University Hospital, University of Zurich, Zurich, Switzerland.
Patellar tendinopathy (PT) is a frequent overuse injury of the extensor knee apparatus, whereas as up to 30% of the athletes might suffer from persisting symptoms during their entire career. In the present case-control study, 47 patients (30.8 ± 11. Read More
Skeletal Radiol 2018 Mar 5;47(3):341-349. Epub 2017 Dec 5.
Department of Radiology, Hospital do Coração (HCor) and Teleimagem, São Paulo, SP, Brazil.
Objective: To assess the differences in morphology and alignment of the knee between patients with proximal patellar tendinopathy (PPT) and a control group, using MRI and focusing on the patellofemoral joint.
Methods: We retrospectively included 35 patients with clinically diagnosed and unequivocal findings of PPT on knee MRI, the case group. For the control group, we included 70 patients who underwent knee MRI for other reasons, with no clinical or MRI evidence of PPT. Read More
BMC Musculoskelet Disord 2017 Nov 22;18(1):486. Epub 2017 Nov 22.
Department of Orthopedics and Trauma Surgery, University Medical Center Freiburg, Albert-Ludwigs-University of Freiburg, Faculty of Medicine, Hugstetter Strasse 55, 79106, Freiburg, Germany.
Background: Arthroscopic patellar release (APR) is utilized for minimally invasive surgical treatment of patellar tendinopathy. Evidence regarding long-term success following the procedure is limited. Also, the influence of age and preoperative performance level, are incompletely understood. Read More
Eur Spine J 2018 Dec 6;27(12):3025-3033. Epub 2017 Nov 6.
Institut für Notfallmedizin und Medizinmanagement (INM), Ludwig-Maximilians-University of Munich, Schiller Strasse 33, D-80336, Munich, Germany.
Purpose: U-shaped sacral fractures are extremely rare injuries that usually occur as a result of falls from considerable heights. Almost all treatment methods described to date aim solely at stabilizing the fracture but do not contribute to supporting the reduction of such fractures. Using existing implants the purpose of this study is to present a surgical technique that facilitates both the reduction and the stabilization of these injuries. Read More
Scand J Med Sci Sports 2018 Mar 26;28(3):1201-1208. Epub 2017 Oct 26.
School of Health and Rehabilitation Sciences, The University of Queensland, Brisbane, Qld, Australia.
To compare tendon elastic and structural properties of healthy individuals with those with Achilles or patellar tendinopathy. Sixty-seven participants (22 Achilles tendinopathy, 17 patellar tendinopathy, and 28 healthy controls) were recruited between March 2015 and March 2016. Shear wave velocity (SWV), an index of tissue elastic modulus, and tendon thickness were measured bilaterally at mid-tendon and insertional regions of Achilles and patellar tendons by an examiner blinded to group. Read More
BMC Musculoskelet Disord 2017 Aug 8;18(1):344. Epub 2017 Aug 8.
Freiburg University Hospital, Clinic of Orthopedic Surgery and Traumatology, Hugstetter Str. 55, 79098, Freiburg, Germany.
Background: The prevalence of patellar tendinopathy is elevated in elite soccer compared to less explosive sports. While the burden of training hours and load is comparably high in youth elite players (age < 23 years), little is known about the prevalence of patellar tendinopathy at this age. There is only little data available on the influence of age, the amount of training, the position on the field, as well as muscular strength, range of motion, or sonographical findings in this age group. Read More
J Sports Sci 2018 May 8;36(10):1179-1185. Epub 2017 Aug 8.
d The Cayman Rugby Football Union , George Town , Cayman Islands.
The goal of an offensive Rugby Union lineout is to throw the ball in a manner that allows your team to maintain possession. Typically, the player catching the ball jumps and is lifted upwards by two teammates, reaching above the opposing player who is competing for the ball also. Despite various beliefs regarding the importance of the jumper's mass and attempted jump height, and lifters' magnitude and point of force application, there is negligible published data on the topic. Read More
Br J Sports Med 2018 Mar 11;52(5):284-291. Epub 2017 Jul 11.
School of Health and Rehabilitation Sciences: Physiotherapy, University of Queensland, St Lucia, Brisbane, Australia.
Study Design: Case-control design.
Background: Tendinopathy is characterised by pain on tendon loading. In persistent cases of upper limb tendinopathy, it is frequently associated with central nervous system sensitisation, whereas less commonly linked in the case of persistent lower limb tendinopathies. Read More
J Biomech 2017 07 19;59:29-34. Epub 2017 May 19.
GRESPI-EA4694, Université de Reims, 51687 Reims Cedex 2, France. Electronic address:
The purpose of this study is to develop a numerical methodology based on real data from wind tunnel experiments to investigate the effect of the ski jumper's posture and speed on aerodynamic forces in a wide range of angles of attack. To improve our knowledge of the aerodynamic behavior of the ski jumper and his equipment during the early flight phase of the ski jump, we applied CFD methodology to evaluate the influence of angle of attack (α=14°, 21.5°, 29°, 36. Read More
Knee 2017 Aug 24;24(4):761-767. Epub 2017 May 24.
School of Biological and Population Health Sciences, 220 Langton Hall, Oregon State University, Corvallis, OR 97331, USA.
Background: Patellar tendinopathy, a common condition of the knee, is often treated with patellar tendon straps to control pain during dynamic activity. Little is known regarding their effect on pain, landing kinematics and kinetics with their application. The purpose of this study was to determine if patellar tendon straps influenced pain, kinematics at landing and ground reaction forces in individuals with patellar tendinopathy versus healthy controls. Read More
J Sci Med Sport 2017 Nov 25;20(11):986-991. Epub 2017 Apr 25.
University of Groningen, University Medical Center Groningen, Center for Sports Medicine, The Netherlands.
Objectives: The primary aim of this study was to investigate the effect of a patellar strap on the proprioception of the symptomatic leg in PT. Secondary aims were to investigate a possible difference in effectiveness between athletes with high and low proprioceptive acuity, and whether predictors of effectiveness could be found.
Design: Randomised cross-over pilot study. Read More
Res Sports Med 2017 Jul-Sep;25(3):253-265. Epub 2017 Apr 10.
a Center for Sports Medicine , University of Groningen, University Medical Center Groningen , Groningen , The Netherlands.
Greater insight into sports and work performance of athletes with patellar tendinopathy (PT) will help establish the severity of this common overuse injury. Primary aim of this study is to investigate the impact of PT on sports and work performance. Seventy seven active athletes with PT (50 males; age 28. Read More
BMC Musculoskelet Disord 2017 04 4;18(1):146. Epub 2017 Apr 4.
Department of Orthopedics and Trauma Surgery, Medical Center - Albert-Ludwigs-University of Freiburg, Faculty of Medicine, Albert-Ludwigs-University of Freiburg, Hugstetter Strasse 55, 79106, Freiburg, Germany.
Background: To date, prognostic outcome factors for patients undergoing arthroscopic treatment due to chronic patellar tendinopathy (PT) are lacking. The purpose of this study was to investigate whether preoperatively assessed MRI parameters might be of prognostic value for prediction of functional outcome and return to sports in arthroscopic treatment of chronic PT.
Methods: A prospective cohort study was conducted including 30 cases (4 female and 24 male competitive athletes) undergoing arthroscopic patellar release (APR) due to chronic PT. Read More
Phys Ther Sport 2017 Mar 13;24:13-19. Epub 2016 Sep 13.
Oregon State University, Department of Athletic Training and Kinesiology, Langton Hall 220, Corvallis, OR, 97331, USA.
Objective: To determine if patellar tendon straps altered quadriceps' muscle activity during a drop-jump landing in males with and without patellar tendinopathy.
Settings: Biomechanics Research Laboratory. Read More
Arthrosc Tech 2016 Dec 12;5(6):e1419-e1424. Epub 2016 Dec 12.
Department of Orthopedic Surgery, Saarland University, Homburg/Saar, Germany.
Chronic patellar tendinosis (jumper's knee) is a common problem among athletes. Conservative treatment is successful in most of the cases including, among others, the use of nonsteroidal anti-inflammatory drugs, local cryotherapy, eccentric muscle training, limitation of sports activity, and local infiltration. In approximately 10% of conservatively treated patients, conservative treatment fails and surgery is required. Read More
Am J Forensic Med Pathol 2017 Mar;38(1):83-89
From the Victorian Institute of Forensic Medicine and Department of Forensic Medicine, Monash University, Melbourne, Victoria, Australia.
Deaths associated with parachuting are very uncommon. However, these deaths do tend to be "high profile" in the traditional and social media. When forensic pathologists examine the deceased after a fatal parachuting incident, the anatomical cause of death is usually not in question. Read More
Int J Sports Phys Ther 2016 Dec;11(6):854-866
Regis University, Denver, CO, USA.
Patellar tendon pain is a significant problem in athletes who participate in jumping and running sports and can interfere with athletic participation. This clinical commentary reviews patellar tendon anatomy and histopathology, the language used to describe patellar tendon pathology, risk factors for patellar tendinopathy and common interventions used to address patellar tendon pain. Evidence is presented to guide clinicians in their decision-making regarding the treatment of athletes with patellar tendon pain. Read More
Front Physiol 2016 19;7:289. Epub 2016 Jul 19.
Inter-University Laboratory on Human Movement Biology (EA 7424), Centre for Interdisciplinary Research in Sport (FED 4272), University of Lyon, University Claude Bernard Lyon 1 Villeurbanne, France.
The height of a maximum Vertical Squat Jump (VSJ) reflects the useful power produced by a jumper during the push-off phase. In turn this partly depends on the coordination of the jumper's segmental rotations at each instant. The physical system constituted by the jumper has been shown to be very sensitive to perturbations and furthermore the movement is realized in a very short time (ca. Read More
Orthopedics 2016 Nov 3;39(6):e1028-e1035. Epub 2016 Aug 3.
Jumper's knee is a common cause of anterior knee pain among athletes and active populations. Numerous treatments have been described with variable results. To better delineate this, the authors reviewed all articles from 2000 to 2014 pertaining to the treatment of patellar tendinopathy, focusing namely on treatment of recalcitrant cases. Read More
Phys Ther Sport 2016 Jul 19;20:19-25. Epub 2015 Dec 19.
Department of Physical Therapy, Federal University of São Carlos, São Carlos, Brazil. Electronic address:
Objectives: To compare the hip, knee and ankle torques, as well as knee and ankle flexibility between athletes with patellar tendinopathy and asymptomatic controls.
Design: Cross-sectional study.
Setting: Laboratory setting. Read More
J Orthop Sports Phys Ther 2016 May 21;46(5):384-90. Epub 2016 Mar 21.
Study Design Clinical measurement study. Background The Victorian Institute of Sport Assessment-Patella (VISA-P), originally developed in English, assesses the severity of patellar tendinopathy symptoms. To date, no French version of the questionnaire exists. Read More
Gait Posture 2016 Mar 15;45:224-8. Epub 2016 Feb 15.
Center for Sports Medicine, University of Groningen, University Medical Center Groningen, The Netherlands. Electronic address:
Purpose: Patellar tendinopathy is a highly prevalent overuse injury, and most treatments are only effective to some extent. This persistence of complaints could be linked to changed proprioception. One study showed diminished proprioception in athletes with lateral epicondylitis. Read More
BMC Musculoskelet Disord 2016 Jan 13;17:16. Epub 2016 Jan 13.
Center for Sports Medicine, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9700, RB, Groningen, The Netherlands.
Background: Lower extremity tendinopathy is a common sports injury, but it can also affect non-athletes. Because tendinopathy is difficult to treat and has negative effects on the ability to work and quality of life, development of preventive interventions is important. The first step in the Van Mechelen prevention model is to determine the extent of the problem. Read More
J Sci Med Sport 2016 Sep 7;19(9):702-6. Epub 2015 Dec 7.
Monash University, School of Physiotherapy, Australia.
Objectives: Many athletes with patellar tendinopathy participate in sports with symptoms during or after activities. Current treatments do not decrease pain in-season; eccentric exercises in-season result in an increase in pain. This study examined if isometric and isotonic exercises relieved pain in competing athletes with patellar tendinopathy. Read More
Int J Sports Med 2016 Mar 23;37(3):245-50. Epub 2015 Dec 23.
Department of Rehabilitation Medicine, University of Groningen, University Medical Center, Groningen, Netherlands.
The literature on the relation between jump biomechanics and jumper's knee indicates that a jump with horizontal displacement poses a threat for developing jumper's knee. Subjects with jumper's knee have been shown to display a stiff landing pattern characterized by a small range of motion. However, up to now only cross-sectional studies have been conducted. Read More
Orthop J Sports Med 2015 Mar 18;3(3):2325967115576100. Epub 2015 Mar 18.
University of Georgia, Athens, Georgia, USA.
Background: Patellar tendinopathy (PT) is a common degenerative condition in physically active populations. Knowledge regarding the biomechanics of landing in populations with symptomatic PT is limited, but altered mechanics may play a role in the development or perpetuation of PT.
Purpose: To identify whether study participants with PT exhibited different landing kinematics compared with healthy controls. Read More
Arthroscopy 2015 Dec;31(12):2430
Jumper's knee is generally managed without surgery, but for patellar distal pole or midsubstance tendonitis (or tendinosis), if surgery is indicated, arthroscopic surgery is as effective as open, with faster return to play. Read More
Scand J Med Sci Sports 2017 Jan 8;27(1):75-82. Epub 2015 Dec 8.
Department of Training and Movement Sciences, Humboldt-Universität zu Berlin, Berlin, Germany.
There is evidence that a non-uniform adaptation of muscle and tendon in young athletes results in increased tendon stress during mid-adolescence. The present longitudinal study investigated the development of the morphological and mechanical properties of muscle and tendon of volleyball athletes in a time period of 2 years from mid-adolescence to late adolescence. Eighteen elite volleyball athletes participated in magnetic resonance imaging and ultrasound-dynamometry sessions to determine quadriceps femoris muscle strength, vastus lateralis, medialis and intermedius morphology, and patellar tendon mechanical and morphological properties in mid-adolescence (16 ± 1 years) and late adolescence (18 ± 1 years). Read More
Sports Health 2015 Sep-Oct;7(5):415-20. Epub 2015 Jan 23.
Department of Orthopaedic Surgery, University of Illinois at Chicago, Chicago, Illinois.
Context: Patellar tendinopathy is a common condition. There are a wide variety of treatment options available, the majority of which are nonoperative. No consensus exists on the optimal method of treatment. Read More
J Med Invest 2015 ;62(3-4):109-13
Department of Orthopedics, the University of Tokushima.
Athletes sometimes experience overuse injuries. To diagnose these injuries, ultrasonography is often more useful than plain radiography, computed tomography (CT), or magnetic resonance imaging (MRI). Ultrasonography can show both bone and soft tissue from various angles as needed, providing great detail in many cases. Read More
J Orthop Sports Phys Ther 2015 Nov 21;45(11):899-909. Epub 2015 Sep 21.
Study Design Case report. Background Although eccentric exercises have been a cornerstone of the rehabilitation of athletes with patellar tendinopathy, the effectiveness of this intervention is sometimes less than ideal. Athletes with patellar tendinopathy have been shown to have different jump-landing patterns and lower hip extensor strength compared to asymptomatic athletes. Read More