3,675 results match your criteria Quadriceps Injury


Knee Function, Strength, and Resumption of Preinjury Sports Participation in Young Athletes Following Anterior Cruciate Ligament Reconstruction.

J Orthop Sports Phys Ther 2019 Feb 15:1-9. Epub 2019 Feb 15.

School of Health and Rehabilitation Sciences, The Ohio State University, Columbus, OH.

Background: Following anterior cruciate ligament reconstruction (ACLR), young athletes demonstrate deficits in knee function and strength whose association with successful return to preinjury sports participation is not well understood.

Objectives: To examine differences in knee function and strength at the time of return-to-sport clearance between young athletes who successfully resumed preinjury sports participation, those who did not resume preinjury sports participation, and those who sustained a second anterior cruciate ligament (ACL) injury by 1 year following return-to-sport clearance.

Methods: This prospective cohort study collected data in 124 young athletes (mean ± SD age, 17. Read More

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https://www.jospt.org/doi/10.2519/jospt.2019.8624
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http://dx.doi.org/10.2519/jospt.2019.8624DOI Listing
February 2019
1 Read

Prevalence of Hamstring Strain Injury Risk Factors in Professional and Under-20 Male Football (Soccer) Players.

J Sport Rehabil 2019 Feb 12:1-23. Epub 2019 Feb 12.

1 Federal University of Health Sciences of Porto Alegre (UFCSPA), Porto Alegre, Brazil.

Context:: Hamstring strain injury (HSI) is the most prevalent injury in football (soccer), and a few intrinsic factors have been associated with higher injury rates.

Objective:: To describe the prevalence of the main intrinsic risk factors for HSI in professional and under-20 football players.

Design:: Cross-sectional study. Read More

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http://dx.doi.org/10.1123/jsr.2018-0084DOI Listing
February 2019
1 Read

RESTORING KNEE EXTENSOR STRENGTH AFTER ANTERIOR CRUCIATE LIGAMENT RECONSTRUCTION: A CLINICAL COMMENTARY.

Int J Sports Phys Ther 2019 Feb;14(1):159-172

Isokinetic Medical Group, FIFA Medical Centre of Excellence, Education & Research Department, Bologna, Italy.

One of the main priorities of rehabilitation after anterior cruciate ligament reconstruction (ACLR) surgery is the restoration of knee extensor muscle strength. Residual deficits in knee extensor muscle size and strength after injury are linked to poor biomechanics, reduced knee function, increased knee osteoarthritis risk, as well as heightened risk of re-injury upon return to sport. Most studies indicate that knee extensor muscle strength is typically not resolved prior to return to sport. Read More

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6350662PMC
February 2019
2 Reads

Sex-related differences in joint-angle-specific hamstring-to-quadriceps function following fatigue.

Eur J Sport Sci 2019 Feb 10:1-9. Epub 2019 Feb 10.

c Health Research Institute, University of Limerick , Limerick , Ireland.

The purpose of this study was to examine the effect of fatiguing exercise on sex-related differences in the function of hamstring and quadriceps muscles at several angular velocities and joint angles. Physically active participants (50 male: 28.7 ± 4. Read More

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http://dx.doi.org/10.1080/17461391.2019.1574904DOI Listing
February 2019
1 Read

ACL Repair With Suture Ligament Augmentation Is Associated With a High Failure Rate Among Adolescent Patients.

Am J Sports Med 2019 Feb 7:363546518825255. Epub 2019 Feb 7.

Children's Hospital Colorado, Aurora, Colorado, USA.

Background:: The anterior cruciate ligament (ACL) repair technique avoids graft harvest and therefore the risk of donor site morbidity. However, early failure rates after ACL repair with suture ligament augmentation (SLA) remain high.

Purpose:: To compare surgical failure, functional outcomes, return to sport, and joint laxity between adolescents who underwent ACL repair with SLA and those who underwent ACL reconstruction with quadriceps tendon-patellar bone autograft (QPA). Read More

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http://dx.doi.org/10.1177/0363546518825255DOI Listing
February 2019
2 Reads

Atraumatic acute bilateral quadriceps tendon rupture in a patient with bilateral patella spurs. A case report and review of literature.

Acta Biomed 2018 Dec 19;90(1-S):203-208. Epub 2018 Dec 19.

Department of Orthopedic Surgery, Ospedale di Fiemme, CAVALESE (Trento).

Background And Aim Of The Work: the spontaneous and simultaneous rupture of both quadriceps tendons is uncommon and has rarely been reported in medical literature. The current case involves a 62-years old man with bilateral atraumatic complete quadriceps tendon rupture. Aim of this study is to provide a systematic review of this case and a literature review of similar cases. Read More

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December 2018
2 Reads

Evaluation of the Knees of Asymptomatic Kangoo Jumpers with MR Imaging.

Magn Reson Med Sci 2019 Jan 31. Epub 2019 Jan 31.

Department of Radiology, Kyrenia University, Dr. Suat Günsel Hospital.

Purpose: The aim of this study is to determine the prevalence of pathologic findings in asymptomatic knees of Kangoo Jumpers by using a 3T MRI and to compare them with age and sex-matched controls who do not regularly participate in any impact sports.

Methods: Both knees of 18 Kangoo Jumpers were examined by 3T MRIs in a total of 36 MRI scans. The control group was comprised of 20 volunteers from the same age group and with similar weights who did not participate in any competitive sports, in a total of 40 MRI scans. Read More

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http://dx.doi.org/10.2463/mrms.mp.2018-0094DOI Listing
January 2019
1 Read

The influence of differences in neurocognitive function on lower limb kinematics, kinetics, and muscle activity during an unanticipated cutting motion.

Phys Ther Res 2018 30;21(2):44-52. Epub 2018 Aug 30.

Faculty of Health and Sport Sciences, University of Tsukuba.

Neurocognitive function may be a risk factor for anterior cruciate ligament (ACL) injury by changing neuromuscular control such as muscle activities. However, the effect of differences in neurocognitive function on biomechanics and neuromuscular control related to ACL injury risk is not clear. The purpose of this study was to examine the effect of differences in neurocognitive function on biomechanics and neuromuscular control during an unanticipated side-step cutting motion. Read More

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https://www.jstage.jst.go.jp/article/ptr/21/2/21_E9938/_arti
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http://dx.doi.org/10.1298/ptr.E9938DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6336436PMC
August 2018
8 Reads

Self-Managed Strength Training for Active Duty Military With a Knee Injury: A Randomized Controlled Pilot Trial.

Mil Med 2019 Jan 24. Epub 2019 Jan 24.

College of Medicine, University of Tennessee Health Science Center, Department of Neurology, 855 Monroe Ave, Suite 415, Memphis, TN.

Introduction: Knee injuries among active duty military are one of the most frequent musculoskeletal injuries and are often caused by exercise or intense physical activity or combat training. These injuries pose a threat to force readiness. Our objective was to assess feasibility (including recruitment and retention rates) of three self-managed strengthening strategies for knee injuries and determine if they resulted in improvements in lower extremity strength, function, pain, and activity compared to usual physical therapy (PT) in military members. Read More

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http://dx.doi.org/10.1093/milmed/usy347DOI Listing
January 2019
1 Read

Nandrolone decanoate administration does not attenuate muscle atrophy during a short period of disuse.

PLoS One 2019 28;14(1):e0210823. Epub 2019 Jan 28.

NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, The Netherlands.

Background: A few days of bed rest or immobilization following injury, disease, or surgery can lead to considerable loss of skeletal muscle mass and strength. It has been speculated that such short, successive periods of muscle disuse may be largely responsible for the age-related loss of muscle mass throughout the lifespan.

Objective: To assess whether a single intramuscular injection of nandrolone decanoate prior to immobilization can attenuate the loss of muscle mass and strength in vivo in humans. Read More

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0210823PLOS
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6349315PMC
January 2019
1 Read

Mechanomyography-based muscle fatigue detection during electrically elicited cycling in patients with spinal cord injury.

Med Biol Eng Comput 2019 Jan 28. Epub 2019 Jan 28.

Department of Biomedical Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia.

Patients with spinal cord injury (SCI) benefit from muscle training with functional electrical stimulation (FES). For safety reasons and to optimize training outcome, the fatigue state of the target muscle must be monitored. Detection of muscle fatigue from mel frequency cepstral coefficient (MFCC) feature of mechanomyographic (MMG) signal using support vector machine (SVM) classifier is a promising new approach. Read More

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http://dx.doi.org/10.1007/s11517-019-01949-4DOI Listing
January 2019
1 Read

Changes in stair ascent biomechanics two to eight years after ACL reconstruction are associated with patient-reported outcomes.

Gait Posture 2019 Jan 22;69:91-95. Epub 2019 Jan 22.

BioMotion Laboratory, Department of Mechanical Engineering, Stanford University, CA, United States; Department of Orthopaedic Surgery, Stanford University, CA, United States.

Background: Anterior cruciate ligament (ACL) injury is often followed by quadriceps deficits that are apparent with gait analysis. The deficit frequently remains after ACL reconstruction (ACLR). As such, evaluation of ACLR patients could be enhanced by a simple method to detect quadriceps deficits. Read More

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http://dx.doi.org/10.1016/j.gaitpost.2019.01.029DOI Listing
January 2019
2 Reads

Effect of Loading Devices on Muscle Activation in Squat and Lunge.

J Sport Rehabil 2019 Jan 24:1-19. Epub 2019 Jan 24.

2 Department of Exercise Health Science, National Taiwan University of Sport.

Context:: Squats and lunges are common exercises frequently applied in muscle strengthening and therapeutic exercises. The loading devices are often used to increase the training intensity.

Objective:: To determine the effect of loading devices on muscle activation in squat and lunge, and to compare the differences in muscle activation between squat and lunge. Read More

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http://dx.doi.org/10.1123/jsr.2018-0182DOI Listing
January 2019
1 Read

Dermal papillae flattening of thigh skin in Syndrome.

Eur J Transl Myol 2018 Nov 13;28(4):7914. Epub 2018 Dec 13.

Interdepartmental Research Center of Myology, Department of Neuroscience, Section of Human Anatomy, University of Padova, Italy.

Our previous studies have shown that severely atrophic Quadriceps muscles of spinal cord injury (SCI) persons suffering with complete and syndrome, and thus with permanent denervation-induced atrophy and degeneration of muscle, were almost completely rescued to normal size after two years of home based Functional Electrical Stimulation (hbFES). Since large surface electrodes were used to stimulate the denervated thigh muscles, we wanted to know if the skin was affected by this peculiar long-term treatment. Indeed, we demonstrated by two approaches that the epidermis decreases in thickness in the long term denervated persons, while it increased to almost pre-SCI values in hbFES compliant SCI persons. Read More

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http://dx.doi.org/10.4081/ejtm.2018.7914DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6317141PMC
November 2018
1 Read

Determination of a Critical Size Threshold for Volumetric Muscle Loss in the Mouse Quadriceps.

Tissue Eng Part C Methods 2019 Feb;25(2):59-70

1 Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory Unversity, Atlanta, Georgia.

Impact Statement: The goal of this study was to determine the threshold for a critically sized, nonhealing muscle defect by characterizing key components in the balance between fibrosis and regeneration as a function of injury size in the mouse quadriceps. There is currently limited understanding of what leads to a critically sized muscle defect and which muscle regenerative components are functionally impaired. With the substantial increase in preclinical VML models as testbeds for tissue engineering therapeutics, defining the critical threshold for VML injuries will be instrumental in characterizing therapeutic efficacy and potential for subsequent translation. Read More

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https://www.liebertpub.com/doi/10.1089/ten.TEC.2018.0324
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http://dx.doi.org/10.1089/ten.TEC.2018.0324DOI Listing
February 2019
6 Reads

Technique and Outcome of a Modified Tibial Plateau Levelling Osteotomy for Treatment of Concurrent Medial Patellar Luxation and Cranial Cruciate Ligament Rupture in 76 Stifles.

Vet Comp Orthop Traumatol 2019 Jan 15;32(1):26-32. Epub 2019 Jan 15.

Department of Surgery, Gulf Coast Veterinary Specialists, Houston, Texas, United States.

Objectives:  The main aim of this article is to describe the technique and outcome of a modified tibial plateau levelling osteotomy (TPLO) that simultaneously levels the tibial plateau and realigns the quadriceps mechanism through medial translation of the proximal tibial segment in dogs less than 15 kg.

Materials And Methods:  A retrospective medical records search identified dogs with concurrent cranial cruciate ligament rupture (CCLR) and medial patellar luxation (MPL). A study group (76 stifles) treated with a modified TPLO was compared with a non-tibial translation group (45 stifles) corrected with traditional surgical technique. Read More

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http://dx.doi.org/10.1055/s-0038-1676296DOI Listing
January 2019
8 Reads

Changes in Lower Body Muscular Performance Following a Season of NCAA Division I Men's Lacrosse.

Sports (Basel) 2019 Jan 9;7(1). Epub 2019 Jan 9.

Department of Rehabilitation, Nutrition, and Sport, School of Allied Health, Latrobe University, Bundoora Victoria 3083, Australia.

The tactical and technical components of training become a primary emphasis, leaving less time for targeted development of physical qualities that underpin performance during the competition phase of a training program. A deemphasis on physical preparation during the in-season training phase may make athletes more susceptible to injury and decrease performance on the field. Two weeks prior to the start and one week following the conclusion of the 16-week collegiate lacrosse season, lower body force production was assessed in eight National Collegiate Athletic Association (NCAA) Division I Men's Lacrosse athletes. Read More

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http://dx.doi.org/10.3390/sports7010018DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6359267PMC
January 2019
2 Reads

The Use of Negative Acceleration as Accessory Force during Lifting.

Adv Orthop 2018 2;2018:9164590. Epub 2018 Dec 2.

Department of Physical Therapy, University of Illinois at Chicago, Chicago, IL, USA.

Objectives: Injury associated with lifting, especially low back injury, is a big problem in industry that accounts for loss of work and high medical expenses. Studies of biomechanics of lifting provide a basis for optimization of lifting. The aim of the study was to further investigate the role of the upward force due to negative acceleration during a lift. Read More

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http://dx.doi.org/10.1155/2018/9164590DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6304531PMC
December 2018
1 Read

Stimulation of paralysed quadriceps muscles with sequentially and spatially distributed electrodes during dynamic knee extension.

J Neuroeng Rehabil 2019 Jan 7;16(1). Epub 2019 Jan 7.

Swiss Paraplegic Centre, Nottwil, 6207, Switzerland.

Background: During functional electrical stimulation (FES) tasks with able-bodied (AB) participants, spatially distributed sequential stimulation (SDSS) has demonstrated substantial improvements in power output and fatigue properties compared to conventional single electrode stimulation (SES). The aim of this study was to compare the properties of SDSS and SES in participants with spinal cord injury (SCI) in a dynamic isokinetic knee extension task simulating knee movement during recumbent cycling.

Method: Using a case-series design, m. Read More

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http://dx.doi.org/10.1186/s12984-018-0471-yDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6322281PMC
January 2019
1 Read

Defects in sarcolemma repair and skeletal muscle function after injury in a mouse model of Niemann-Pick type A/B disease.

Skelet Muscle 2019 Jan 5;9(1). Epub 2019 Jan 5.

Department of Cell Biology and Molecular Genetics, University of Maryland, 2134 Bioscience Research Building, College Park, MD, 20742-5815, USA.

Background: Niemann-Pick disease type A (NPDA), a disease caused by mutations in acid sphingomyelinase (ASM), involves severe neurodegeneration and early death. Intracellular lipid accumulation and plasma membrane alterations are implicated in the pathology. ASM is also linked to the mechanism of plasma membrane repair, so we investigated the impact of ASM deficiency in skeletal muscle, a tissue that undergoes frequent cycles of injury and repair in vivo. Read More

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https://skeletalmusclejournal.biomedcentral.com/articles/10.
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http://dx.doi.org/10.1186/s13395-018-0187-5DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6320626PMC
January 2019
3 Reads

Photobiomodulation therapy as a tool to prevent hamstring strain injuries by reducing soccer-induced fatigue on hamstring muscles.

Lasers Med Sci 2019 Jan 3. Epub 2019 Jan 3.

Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil.

Muscle fatigue is a potential risk factor for hamstring strain injuries in soccer players. The aim of this study was to verify the effect of photobiomodulation therapy (PBMT) on the hamstrings' muscle fatigue of soccer players during a simulated match. Twelve male amateur soccer players (~ 25 years) participated in this randomized, crossover, double-blinded, placebo-controlled trial. Read More

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http://dx.doi.org/10.1007/s10103-018-02709-wDOI Listing
January 2019
10 Reads

Examination of Physical Characteristics and Positional Differences in Professional Soccer Players in Qatar.

Sports (Basel) 2018 Dec 31;7(1). Epub 2018 Dec 31.

Athlete Health and Performance Research Centre (AHP), Aspetar Orthopaedic and Sports Medicine Hospital, P.O. Box 29222, Doha, Qatar.

Physical characteristics in professional soccer differ between competition levels and playing positions, and normative data aid practitioners in profiling their players to optimize performance and reduce injury risk. Given the paucity of research in Arabic soccer populations, the purpose of this study was to provide position-specific normative values for professional players competing in the Qatar Stars League. One hundred and ninety-five players completed a musculoskeletal assessment as part of an annual periodic health examination. Read More

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http://dx.doi.org/10.3390/sports7010009DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6358794PMC
December 2018
2 Reads

[Limited orthopaedic surgery combined with external fixation for the treatment of lower extremity sequelae of middle and old aged post-poliomyelitis].

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2018 Oct;32(10):1249-1254

Department of Orthopaedics, Rehabilitation Hospital of the National Research Center for Rehabilitation Technical Aids, Beijing, 100176, P.R.China.

Objective: To summarize the effectiveness of limited orthopedic surgery combined with external fixation for the treatment of lower extremity sequelae of middle and old aged post-poliomyelitis, and then to explore the strategy of surgical correction and functional reconstruction method.

Methods: From the database of 23 310 cases of poliomyelitis sequelae treated by QIN Sihe Orthopaedic Surgical team between September 1982 and December 2017, 629 patients over 41 years old were retrieved and the epidemiological characteristics of the patients were analyzed. Between March 2011 and June 2015, 57 patients with poliomyelitis sequelae treated with limited operation and external fixation were followed up 2-6 years, and the history of poliomyelitis sequelae was 41-67 years (mean, 47. Read More

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http://dx.doi.org/10.7507/1002-1892.201806022DOI Listing
October 2018
1 Read

Rate of torque development is the primary contributor to quadriceps avoidance gait following total knee arthroplasty.

Gait Posture 2019 Feb 16;68:397-402. Epub 2018 Dec 16.

Rehabilitation Sciences Program, College of Health Sciences, University of Kentucky, 900 S. Limestone, Lexington, KY 40536-0200, USA; Department of Orthopaedics & Sports Medicine, College of Medicine, University of Kentucky, 125 E. Maxwell Street, Suite 201, Lexington, KY 40508, USA; Division of Physical Therapy, College of Health Sciences, University of Kentucky, Room 204D Wethington Building, 900 South Limestone St, Lexington, KY 40536, USA. Electronic address:

Background: Following rehabilitation for total knee arthroplasty, "quadriceps avoidance gait", defined by limited knee flexion angle excursion during walking, persists and contributes to poor long-term outcomes. Given the presence of several post-surgical impairments, identifying the contribution of multiple factors to knee flexion angle excursion is important to developing targeted interventions to improve recovery after total knee arthroplasty.

Research Questions: Which outcomes continue to improve following rehabilitation for total knee arthroplasty? What are the primary contributors to impaired knee flexion angle excursion during walking following total knee arthroplasty?

Methods: Peak muscle strength and rate of torque development of the quadriceps, hip abductors, and hip external rotators, five-time sit-to-stand test, Knee Injury & Osteoarthritis Outcome Score, and gait mechanics were assessed in 24 participants at three and six months post-surgery. Read More

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http://dx.doi.org/10.1016/j.gaitpost.2018.12.019DOI Listing
February 2019
2 Reads

Interventions used for Rehabilitation and Prevention of Patellar Tendinopathy in athletes: a survey of Brazilian Sports Physical Therapists.

Braz J Phys Ther 2018 Dec 19. Epub 2018 Dec 19.

Physical Therapy Department, Universidade Federal de São Carlos (UFSCar), São Carlos, SP, Brazil; Postgraduate Program of Physical Therapy, Universidade Federal de São Carlos (UFSCar), São Carlos, SP, Brazil.

Objectives: (1) To identify the type and frequency of interventions used by Brazilian physical therapists to treat and prevent the occurrence of patellar tendinopathy in athletes and the criteria used to return to sport; (2) to compare the interventions used to the grade of recommendation of current evidence.

Methods: Design: cross-sectional study.

Setting: online survey throughout sports physical therapy association. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S14133555183022
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http://dx.doi.org/10.1016/j.bjpt.2018.12.001DOI Listing
December 2018
7 Reads

Is There a Relationship between Patellofemoral Alignment and Osgood-Schlatter Disease? A Case-Control Study.

J Knee Surg 2018 Dec 21. Epub 2018 Dec 21.

Department of Orthopaedics, Adana City Research and Education Hospital, Adana, Turkey.

This study was aimed to investigate the role of anatomic variations in patellofemoral alignment in patients with or without Osgood-Schlatter disease (OSD) and to determine the potential anatomic risk factors that may play role in the etiology. This prospective observational case-control study was conducted on two groups of adolescent patients. Group 1 comprised patients who were diagnosed as having OSD and group 2 consisted of an equal number of age-matched patients who presented to the outpatient clinic with traumatic knee injury and underwent knee radiographic examination but without a diagnosis of OSD. Read More

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http://dx.doi.org/10.1055/s-0038-1676523DOI Listing
December 2018
2 Reads

Muscle atrophy in mechanically-ventilated critically ill children.

PLoS One 2018 19;13(12):e0207720. Epub 2018 Dec 19.

Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri, United States of America.

Importance: ICU-acquired muscle atrophy occurs commonly and worsens outcomes in adults. The incidence and severity of muscle atrophy in critically ill children are poorly characterized.

Objective: To determine incidence, severity and risk factors for muscle atrophy in critically ill children. Read More

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0207720PLOS
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6300323PMC
December 2018
1 Read

Quadriceps weakness associates with greater T1ρ relaxation time in the medial femoral articular cartilage 6 months following anterior cruciate ligament reconstruction.

Knee Surg Sports Traumatol Arthrosc 2018 Dec 17. Epub 2018 Dec 17.

Department of Orthopaedics, University of North Carolina at Chapel Hill, 102 Mason Farm Rd # 2, Chapel Hill, NC, 27599, USA.

Purpose: Quadriceps weakness following anterior cruciate ligament reconstruction (ACLR) is linked to decreased patient-reported function, altered lower extremity biomechanics and tibiofemoral joint space narrowing. It remains unknown if quadriceps weakness is associated with early deleterious changes to femoral cartilage composition that are suggestive of posttraumatic osteoarthritis development. The purpose of the cross-sectional study was to determine if quadriceps strength was associated with T1ρ relaxation times, a marker of proteoglycan density, of the articular cartilage in the medial and lateral femoral condyles 6 months following ACLR. Read More

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http://dx.doi.org/10.1007/s00167-018-5290-yDOI Listing
December 2018
2 Reads

Validity and Reliability of a Non-invasive Test to Assess Quadriceps and Hamstrings Strength in Athletes.

Front Physiol 2018 29;9:1702. Epub 2018 Nov 29.

CRIAMS-Sport Medicine Centre, University of Pavia, Voghera, Italy.

Modifiable risk factors for hamstring injury include lack of strength, fatigue and muscle strength asymmetry. Assessing lower body strength in the field is problematic as "gold standard assessment" are expensive, non-portable and assessment is time-consuming. Therefore, the objective of this study was to examine the validity and reliability of an adapted aneroid sphygmomanometer test of hamstring and quadricep strength. Read More

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http://dx.doi.org/10.3389/fphys.2018.01702DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6281997PMC
November 2018
1 Read

Evaluation of retraction time as a predictor of postoperative motor dysfunction after minimally invasive transpsoas interbody fusion at L4-L5.

J Clin Neurosci 2018 Dec 11. Epub 2018 Dec 11.

MedStar Georgetown University Hospital, Department of Neurosurgery, Washington, D.C, United States. Electronic address:

Background: Complications associated with the lateral lumbar transpsoas approach largely comprise various nerve-related syndromes particularly at L4-5. Quadriceps weakness can occur from stretch injury to the femoral nerve during retraction.

Objective: The purpose of this study is to evaluate the role of retraction time in the development of postoperative neuropathic motor weakness at the L4-5 level. Read More

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http://dx.doi.org/10.1016/j.jocn.2018.10.108DOI Listing
December 2018
1 Read

Effects of Recreational Ski Mountaineering on Cumulative Muscle Fatigue - A Longitudinal Trial.

Front Physiol 2018 27;9:1687. Epub 2018 Nov 27.

1Institute for Sports Medicine, Alpine Medicine and Health Tourism, University for Health Sciences, Medical Informatics and Technology, Tirol, Austria.

Sport is known to have many positive effects on mental and physical health. High-intensity exercise is considered to decrease muscle strength and induce muscle fatigue, which is associated with a higher risk of injury. In recreational alpine skiers, a decrease of eccentric peak hamstring torque, as an indication of muscle fatigue, occurs even after 1 day of skiing. Read More

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http://dx.doi.org/10.3389/fphys.2018.01687DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6277900PMC
November 2018

Do individual differences in the distribution of activation between synergist muscles reflect individual strategies?

Exp Brain Res 2018 Dec 6. Epub 2018 Dec 6.

Faculty of Sport Sciences, Laboratory "Movement, Interactions, Performance" (EA 4334), University of Nantes, 25 bis boulevard Guy Mollet, 44300, Nantes, France.

Individual differences in the distribution of activation between synergist muscles have been reported during a wide variety of tasks. Whether these differences represent actual individual strategies is unknown. The aims of this study were to: (i) test the between-day reliability of the distribution of activation between synergist muscles, (ii) to determine the robustness of these strategies between tasks, and to (iii) describe the inter-individual variability of activation strategies in a large sample size. Read More

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http://dx.doi.org/10.1007/s00221-018-5445-6DOI Listing
December 2018
1 Read

Femoral Nerve Palsy With Concomitant Patellar Dislocation in a Ballet Dancer.

Orthopedics 2018 Dec 11:1-3. Epub 2018 Dec 11.

Femoral nerve palsy with concomitant patellar dislocation is a rare clinical entity that has not previously been well documented. The authors present the case of a 16-year-old female ballet dancer who sustained a patellar dislocation with concomitant femoral nerve palsy. She experienced muscle weakness after the initial injury and developed neuropathic symptoms through the anterior left thigh. Read More

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http://dx.doi.org/10.3928/01477447-20181206-07DOI Listing
December 2018

Landing Styles Influences Reactive Strength Index without Increasing Risk for Injury.

Sports Med Int Open 2018 Apr 22;2(2):E35-E40. Epub 2018 May 22.

UT Health San Antonio, Department of Physical Therapy, San Antonio, United States.

The aim was to determine which three landing styles - stiff (ST), self-selected (SS), or soft (SF) - exhibit safer landing mechanics and greater jumping performance. Thirty participants (age: 26.5±5. Read More

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http://dx.doi.org/10.1055/a-0608-4280DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6225960PMC
April 2018
2 Reads

Endurance exercise increases the protein levels of PGC-1α and respiratory chain complexes in mouse skeletal muscle during atorvastatin administration.

J Physiol Sci 2019 Mar 8;69(2):327-333. Epub 2018 Dec 8.

Department of Physical Therapy, School of Health Care and Social Welfare, Kibi International University, Takahashi, Okayama, Japan.

Statins and exercise reduce cardiovascular disease incidence. We investigated whether endurance exercise in mice induces mitochondrial adaptation in skeletal muscle and muscle injury during administration of atorvastatin, a member of the statin medication class. Male C57BL mice were assigned to one of three groups: control (Con), statin (Statin), or statin and exercise (Statin + Ex). Read More

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http://dx.doi.org/10.1007/s12576-018-0649-xDOI Listing
March 2019
2 Reads

Improvements in Thigh Strength Symmetry Are Modestly Correlated With Changes in Self-Reported Function After Anterior Cruciate Ligament Reconstruction.

Orthop J Sports Med 2018 Nov 28;6(11):2325967118807459. Epub 2018 Nov 28.

Orthopedics Biomechanics Laboratory and Sports Medicine Center, Mayo Clinic, Rochester, Minnesota, USA.

Background: The association between quadriceps strength and functional outcomes after anterior cruciate ligament reconstruction (ACLR) is a focus of current research, while evaluations of hamstring strength are limited, despite the frequent use of hamstring autografts.

Purpose/hypothesis: The purpose of this study was to determine the relationship between changes in quadriceps and hamstring strength symmetry and self-reported outcomes before ACLR and at 12 and 24 weeks after surgery. We hypothesized that improvements in quadriceps and hamstring strength symmetry would be correlated with improvements in self-reported outcome measures within the first 6 months after ACLR. Read More

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http://dx.doi.org/10.1177/2325967118807459DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6280613PMC
November 2018
2 Reads

THE EFFECT OF KNEE JOINT COOLING ON ISOKINETIC TORQUE PRODUCTION OF THE KNEE EXTENSORS: CONSIDERATIONS FOR APPLICATION.

Int J Sports Phys Ther 2018 Dec;13(6):985-992

Rehabilitation Services, University of Central Lancashire, Preston, England.

Background: Cryotherapy is commonly used in sport for the management of injury or during recovery, however the effects on concentric isokinetic strength appear unclear when considering the effect of joint cooling distal to the anterior thigh.

Purpose: The purpose of this study was to investigate the effect of cooling of the knee joint on quadriceps concentric isokinetic torque production. The results will inform the use of cryotherapy in practice. Read More

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6253755PMC
December 2018

How Do Race and Insurance Status Affect the Care of Pediatric Anterior Cruciate Ligament Injuries?

Clin J Sport Med 2018 Nov 28. Epub 2018 Nov 28.

Division of Orthopaedics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.

Objective: To identify associations between race or insurance status and preoperative, intraoperative, and postoperative findings in a large cohort of pediatric anterior cruciate ligament (ACL) reconstructions.

Design: Retrospective cohort study.

Setting: Division of Orthopaedics at an urban tertiary care children's hospital. Read More

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http://dx.doi.org/10.1097/JSM.0000000000000706DOI Listing
November 2018
9 Reads

Poor Performance on Single-Legged Hop Tests Associated With Development of Posttraumatic Knee Osteoarthritis After Anterior Cruciate Ligament Injury.

Orthop J Sports Med 2018 Nov 26;6(11):2325967118810775. Epub 2018 Nov 26.

Biomechanics and Movement Science Program, University of Delaware, Newark, Delaware, USA.

Background: The risk for knee osteoarthritis (OA) is substantially increased after anterior cruciate ligament (ACL) injury. Tools are needed to identify characteristics of patients after ACL injury who are most at risk for posttraumatic OA.

Purpose: To determine whether clinical measures of knee function after ACL injury are associated with the development of radiographic knee OA 5 years after injury. Read More

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http://journals.sagepub.com/doi/10.1177/2325967118810775
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http://dx.doi.org/10.1177/2325967118810775DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6259076PMC
November 2018
11 Reads

Hypoesthesia after anterior cruciate ligament reconstruction: The relationship between proprioception and vibration perception deficits in individuals greater than one year post-surgery.

Knee 2019 Jan 27;26(1):194-200. Epub 2018 Nov 27.

Department of Physical Therapy, University of Illinois at Chicago, Chicago, IL, USA.

Background: While surgical reconstruction restores mechanical stability following anterior cruciate ligament (ACL) rupture, many experience early-onset osteoarthritis despite surgery. Neurophysiological changes are hypothesized to contribute to knee osteoarthritis progression. Proprioceptive deficits have been reported following ACL injury/reconstruction; however, vibration perception threshold (VPT) has been less studied. Read More

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http://dx.doi.org/10.1016/j.knee.2018.10.014DOI Listing
January 2019
2 Reads

Intercostal, ilioinguinal, and iliohypogastric nerve transfers for lower limb reinnervation after spinal cord injury: an anatomical feasibility and experimental study.

J Neurosurg Spine 2018 Nov 1:1-11. Epub 2018 Nov 1.

4Department of Surgery, Anesthesiology, and Radiology, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, Egypt.

OBJECTIVESpinal cord injury (SCI) has been investigated in various animal studies. One promising therapeutic approach involves the transfer of peripheral nerves originating above the level of injury into those originating below the level of injury. The purpose of the present study was to evaluate the feasibility of nerve transfers for reinnervation of lower limbs in patients suffering SCI to restore some hip and knee functions, enabling them to independently stand or even step forward with assistive devices and thus improve their quality of life. Read More

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http://dx.doi.org/10.3171/2018.8.SPINE181DOI Listing
November 2018
12 Reads

Inter- and intra-rater variability of testing velocity when assessing lower limb spasticity.

J Rehabil Med 2019 01;51(1):54-60

Physiotherapy Department, Epworth Healthcare, Australia.

Objective: To establish the variability of fast testing velocity and joint range of motion and position when assessing lower-limb spasticity in individuals following neurological injury.

Design: Observational study of people with lower-limb spasticity.

Subjects: Patients with an upper motor neurone lesion (n = 35) and clinicians experienced in spasticity assessment (n = 34) were included. Read More

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http://dx.doi.org/10.2340/16501977-2496DOI Listing
January 2019
2 Reads

Coping With Anterior Cruciate Ligament Injury From Childhood to Maturation: A Prospective Case Series of 44 Patients With Mean 8 Years' Follow-up.

Am J Sports Med 2018 Nov 26:363546518810750. Epub 2018 Nov 26.

Division of Orthopaedic Surgery, Oslo University Hospital, Oslo, Norway.

Background:: There is no consensus regarding the best treatment approach for skeletally immature children with anterior cruciate ligament (ACL) injuries. High-quality studies with long-term follow-up are lacking, and evidence to support decision making is limited.

Purpose:: To evaluate functional and patient-reported outcome, surgical history, and complications among young adults who sustained an ACL injury before the age of 13 years and were treated with active rehabilitation and the option of delayed ACL reconstruction if needed. Read More

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http://dx.doi.org/10.1177/0363546518810750DOI Listing
November 2018
7 Reads

Are athletes able to resume sport at six-month mean follow-up after anterior cruciate ligament reconstruction? Prospective functional and psychological assessment from the French Anterior Cruciate Ligament Study (FAST) cohort.

Knee 2019 Jan 22;26(1):155-164. Epub 2018 Nov 22.

Clinique du Sport Paris, Paris, France; Institut de l'Appareil Locomoteur Nollet, Paris, France; Racing 92, Le Plessis-Robinson, France.

Background: The decision to return to sport following anterior cruciate ligament (ACL) reconstruction should not only be based on time since surgery. This study aimed to assess, using isokinetic and neuromuscular (hops) testing in a large group, postoperative objective functional recovery of the knee. The secondary objective was to determine the relationship between psychological, functional scores, and these postoperative tests. Read More

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http://dx.doi.org/10.1016/j.knee.2018.11.006DOI Listing
January 2019
3 Reads

Prospective Study of Central versus Peripheral Obesity in Total Knee Arthroplasty.

Knee Surg Relat Res 2018 Dec;30(4):319-325

Department of Orthopedic Surgery, University of Pennsylvania, Philadelphia, PA, USA.

Purpose: Body mass index (BMI) is often used to predict surgical difficulty in patients receiving total knee arthroplasty (TKA); however, BMI neglects variation in the central versus peripheral distribution of adipose tissue. We sought to examine whether anthropometric factors, rather than BMI alone, may serve as a more effective indication of surgical difficulty in TKA.

Materials And Methods: We prospectively enrolled 67 patients undergoing primary TKA. Read More

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http://dx.doi.org/10.5792/ksrr.18.025DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6254871PMC
December 2018
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Quadriceps architecture in individuals with patellofemoral pain: a systematic review protocol.

JBI Database System Rev Implement Rep 2018 Nov 16. Epub 2018 Nov 16.

Research Center for Evidence Based Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.

Review Question: The question of this review is: are there differences in quadriceps architectural parameters between healthy individuals and those with patellofemoral pain? Read More

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http://dx.doi.org/10.11124/JBISRIR-2017-003689DOI Listing
November 2018
6 Reads

Anterior knee pain following BPTB graft harvest. Reality or overhyped.

J Clin Orthop Trauma 2018 Oct-Dec;9(4):307-311. Epub 2018 Mar 8.

Aash Arthroscopy Centre, Ahmedabad, Gujarat, India.

Introduction: The patellar tendon graft has long been the gold standard for ACL reconstruction. Recently semitendinosus and gracilis tendons graft have been used increasingly. We hypothetise that the Bone-Patella Tendon-Bone graft is a good and economical graft for the Indian population with no adverse effects of anterior knee pain or patellar tendon shortening. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S09765662173055
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http://dx.doi.org/10.1016/j.jcot.2018.03.003DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6224633PMC
March 2018
25 Reads

Empirical Based Modeling for the Assessment of Dynamic Knee Stability: Implications for Anterior Cruciate Ligament Injury Risk.

Conf Proc IEEE Eng Med Biol Soc 2018 Jul;2018:1676-1679

Anterior cruciate ligament (ACL) injuries are common sports injuries, costing the U.S. roughly $1 billion annually. Read More

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https://ieeexplore.ieee.org/document/8512631/
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http://dx.doi.org/10.1109/EMBC.2018.8512631DOI Listing
July 2018
8 Reads

Bilateral Quadriceps Strength Asymmetry Is Associated With Previous Knee Injury in Military Special Tactics Operators.

J Strength Cond Res 2019 Jan;33(1):89-94

Neuromuscular Research Laboratory, Warrior Human Performance Research Center, University of Pittsburgh, Pittsburgh, Pennsylvania.

Eagle, SR, Keenan, KA, Connaboy, C, Wohleber, M, Simonson, A, and Nindl, BC. Bilateral quadriceps strength asymmetry is associated with previous knee injury in military special tactics operators. J Strength Cond Res 33(1): 89-94, 2019-Bilateral strength asymmetries have been related to lower-limb injury in athletes. Read More

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http://Insights.ovid.com/crossref?an=00124278-900000000-9505
Publisher Site
http://dx.doi.org/10.1519/JSC.0000000000002920DOI Listing
January 2019
7 Reads