- Activity level and subjective knee function 15 years after anterior cruciate ligament injury: a prospective, longitudinal study of nonreconstructed patients
Department of Orthopaedics, Clinical Sciences, Lund University, Lund, Sweden
Am J Sports Med 35:1135-43. 2007
The activity level and subjective knee function after an anterior cruciate ligament (ACL) injury treated without reconstruction have not been well elucidated.
- High prevalence of knee osteoarthritis, pain, and functional limitations in female soccer players twelve years after anterior cruciate ligament injury
L S Lohmander
Lund University, Lund, Sweden
Arthritis Rheum 50:3145-52. 2004
To determine the prevalence of radiographic knee osteoarthritis (OA) as well as knee-related symptoms and functional limitations in female soccer players 12 years after an anterior cruciate ligament (ACL) injury.
- Dietary nitrate supplementation enhances muscle contractile efficiency during knee-extensor exercise in humans
Stephen J Bailey
School of Sport and Health Sciences, University of Exeter, Heavitree Rd, Exeter EX1 2LU, UK
J Appl Physiol (1985) 109:135-48. 2010
..The reduced muscle metabolic perturbation with NO(3)(-) supplementation allowed high-intensity exercise to be tolerated for a greater period of time...
- Effect of simultaneous botulinum toxin injections into several muscles on impairment, activity, participation, and quality of life among stroke patients presenting with a stiff knee gait
Gilles D Caty
Physical Medicine and Rehabilitation Department, Universite Catholique de Louvain, Cliniques Universitaires Saint Luc, Brussels, Belgium
Stroke 39:2803-8. 2008
..A lack of knee flexion during the swing phase (stiff knee) is one of the impairments that restrict walking ability among patients ..
- The effect of disease site (knee, hip, hand, foot, lower back or neck) on employment reduction due to osteoarthritis
Eric C Sayre
Arthritis Research Centre of Canada, Vancouver, British Columbia, Canada
PLoS ONE 5:e10470. 2010
Osteoarthritis (OA) has a significant impact on individuals' ability to work. Our goal was to investigate the effects of the site of OA (knee, hip, hand, foot, lower back or neck) on employment reduction due to OA (EROA).
- Development and validation of the international knee documentation committee subjective knee form
J J Irrgang
Department of Physical Therapy, University of Pittsburgh, School of Health and Rehabilitation Sciences, Pennsylvania 15260, USA
Am J Sports Med 29:600-13. 2001
A committee of international knee experts created the International Knee Documentation Committee Subjective Knee Form, which is a knee-specific, rather than a disease-specific, measure of symptoms, function, and sports activity...
- A comparative study of articular cartilage thickness in the stifle of animal species used in human pre-clinical studies compared to articular cartilage thickness in the human knee
D D Frisbie
Orthopaedic Research Center, Department of Clinical Sciences, Colorado State University, Ft Collins, Colorado 80525, USA
Vet Comp Orthop Traumatol 19:142-6. 2006
..condyles of species were used in preclinical studies of articular cartilage and compared to those of the human knee. Cadaver specimens were obtained of six human knees, as well as six equine, six goat, six dog, six sheep and six ..
- Definition and evaluation of testing scenarios for knee wear simulation under conditions of highly demanding daily activities
Aesculap AG Research and Development, Tuttlingen, Germany
Med Eng Phys 35:591-600. 2013
The objective of our study was the definition of testing scenarios for knee wear simulation under various highly demanding daily activities of patients after total knee arthroplasty...
- Aquaporin 1 (AQP1) expression in experimentally induced osteoarthritic knee menisci: an in vivo and in vitro study
Department of Bio Medical Sciences, Section of Human Anatomy and Histology, University of Catania, Catania, Italy
Tissue Cell 45:145-52. 2013
Osteoarthritis (OA) of the knee is a major problem in our society. The development of new treatment options for OA is limited, because the pathophysiological mechanisms are not clearly understood, especially on the molecular level...
- Influence of vibration resistance training on knee extensor and plantar flexor size, strength, and contractile speed characteristics after 60 days of bed rest
Edwin R Mulder
Research Institute MOVE, Faculty of Human Movement Sciences, VU University, Amsterdam, The Netherlands
J Appl Physiol (1985) 107:1789-98. 2009
..Whereas contractile speed improved for the calf, the exercise regimen only partially preserved calf size and MVC strength. Modification of the exercise regimen seems warranted...
- The Knee Clinical Assessment Study-CAS(K). A prospective study of knee pain and knee osteoarthritis in the general population: baseline recruitment and retention at 18 months
Primary Care Sciences Research Centre, Keele University, Keele, North Staffordshire, ST5 5BG, UK
BMC Musculoskelet Disord 7:30. 2006
..We investigated these matters in the context of baseline recruitment and retention at 18 months of participants for a prospective observational cohort study of knee pain and knee osteoarthritis in the general population.
- Prevalence of abnormalities in knees detected by MRI in adults without knee osteoarthritis: population based observational study (Framingham Osteoarthritis Study)
Department of Radiology, Boston University School of Medicine, FGH Building, 820 Harrison Avenue, Boston, MA 02118, USA
BMJ 345:e5339. 2012
..To examine use of magnetic resonance imaging (MRI) of knees with no radiographic evidence of osteoarthritis to determine the prevalence of structural lesions associated with osteoarthritis and their relation to age, sex, and obesity...
- Trunk, pelvis, hip, and knee kinematics, hip strength, and gluteal muscle activation during a single-leg squat in males and females with and without patellofemoral pain syndrome
Theresa H Nakagawa
Federal University of Sao Carlos, Sao Carlos, SP, Brazil
J Orthop Sports Phys Ther 42:491-501. 2012
..Controlled laboratory study using a cross-sectional design...
- Training affects knee kinematics and kinetics in cutting maneuvers in sport
Jodie L Cochrane
University of Western Australia, Perth, Australia
Med Sci Sports Exerc 42:1535-44. 2010
The current study examined how different training affects the kinematics and applied moments at the knee during sporting maneuvers and the potential to reduce loading of the anterior cruciate ligament (ACL)...
- Initial phase of maximal voluntary and electrically stimulated knee extension torque development at different knee angles
C J de Ruiter
Institute for Fundamental and Clinical Human Movement Sciences, Vrije Universiteit, Van der Boechorststraat 9, 1081 BT Amsterdam, The Netherlands
J Appl Physiol (1985) 97:1693-701. 2004
We investigated the capacity for torque development and muscle activation at the onset of fast voluntary isometric knee extensions at 30, 60, and 90 degrees knee angle...
- The effect of anterior cruciate ligament injury on knee joint function under a simulated muscle load: a three-dimensional computational simulation
Orthopaedic Biomechanics Laboratory, Harvard Medical School, Massachusetts General Hospital Beth Israel Deaconess Medical Center, Boston 02215, USA
Ann Biomed Eng 30:713-20. 2002
Understanding the biomechanical effect of various factors on knee behavior after anterior cruciate ligament (ACL) injury or reconstruction is instrumental for the development of an optimal surgical treatment of ACL injury that can better ..
- Medium to long-term results after reconstruction of bone defects at the knee with tumor endoprostheses
Department of Orthopaedics, University of Heidelberg, 69118 Heidelberg, Germany
J Surg Oncol 101:166-9. 2010
Limb salvage and reconstruction with tumor endoprostheses is considered as therapeutic standard in the treatment of bone defects at the knee. Few studies report long-term results so far.
- No difference in knee function or prevalence of osteoarthritis after reconstruction of the anterior cruciate ligament with 4-strand hamstring autograft versus patellar tendon-bone autograft: a randomized study with 10-year follow-up
Division of Rehabilitation, Oslo University Hospital, Rikshospitalet, Oslo, Norway
Am J Sports Med 38:448-54. 2010
..The choice of different graft types and surgical techniques used when reconstructing a torn anterior cruciate ligament may influence the long-term prevalence of osteoarthritis and functional outcomes...
- Effect of graded hypoxia on supraspinal contributions to fatigue with unilateral knee-extensor contractions
Centre for Sports Medicine and Human Performance, Brunel University, Uxbridge, Middlesex UB8 3PH, UK
J Appl Physiol (1985) 109:1842-51. 2010
..output from the motor cortex, accounts for over one-quarter of the force loss after fatiguing contractions of the knee extensors in normoxia...
- Effects of adding magnesium to bupivacaine and fentanyl for spinal anesthesia in knee arthroscopy
Department of Anesthesiology, Faculty of Medicine, University of Kocaeli, Kocaeli, Turkey
J Anesth 23:19-25. 2009
..study was to investigate the effects of adding intrathecal magnesium sulfate 50 mg to low-dose bupivacaine-fentanyl on the spread, duration, regression of spinal block, and postoperative analgesia in patients undergoing knee arthroscopy.
- The hemodynamic and metabolic effects of tourniquet application during knee surgery
Cattedra di Anestesiologia e Rianimazione and Cattedra di Fisiologia Umana, Universita Degli Studi di Udine, Italy
Anesth Analg 91:727-31. 2000
..the effects of tourniquet application on the cardiovascular system and metabolism in 10 young men undergoing knee surgery with general anesthesia. The duration of inflation was from 75 to 108 min...
- Influence of medial hamstring tendon harvest on knee flexor strength after anterior cruciate ligament reconstruction. A detailed evaluation with comparison of single- and double-tendon harvest
Department of Orthopaedic Surgery, Tokyo Teishin Hospital, Tokyo, Japan
Am J Sports Med 31:522-9. 2003
The advantages of hamstring tendon autografts for anterior cruciate ligament reconstruction are well known; however, concerns have arisen regarding the influence of hamstring tendon harvest on postoperative weakness in knee flexion.
- Selective stimulation of the human femoral nerve with a flat interface nerve electrode
M A Schiefer
Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA
J Neural Eng 7:26006. 2010
..Of these, at least one muscle was a hip flexor and at least two were knee extensors...
- Reduction in knee adduction moment via non-invasive biomechanical training: a longitudinal gait analysis study
Biorobotics and Biomechanics Lab, Technion Israel Institute of Technology, Haifa, Israel
J Biomech 45:41-5. 2012
..have been previously reported to reduce pain and facilitate superior levels of function in patients with medial knee osteoarthritis [OA]...
- Increasing prevalence of knee pain and symptomatic knee osteoarthritis: survey and cohort data
Uyen Sa D T Nguyen
Clinical Epidemiology Research and Training Unit, Boston University School of Medicine, and Brigham and Women s Hospital, Boston, Massachusetts 02118, USA
Ann Intern Med 155:725-32. 2011
A recent surge in knee replacements is assumed to be due to aging and increased obesity of the U.S. population.
- Duloxetine, a centrally acting analgesic, in the treatment of patients with osteoarthritis knee pain: a 13-week, randomized, placebo-controlled trial
Amy S Chappell
Lilly Research Laboratories, Indianapolis, IN, USA
Pain 146:253-60. 2009
..randomized, double-blind, placebo-controlled trial of duloxetine (60-120 mg/day) versus placebo in the treatment of knee pain in 231 patients meeting clinical and radiographic criteria for osteoarthritis of the knee...
- Duloxetine added to oral nonsteroidal anti-inflammatory drugs for treatment of knee pain due to osteoarthritis: results of a randomized, double-blind, placebo-controlled trial
ELIJAH P FRAKES
Eli Lilly and Company, Indianapolis, IN, USA
Curr Med Res Opin 27:2361-72. 2011
To determine the efficacy, tolerability, and safety of duloxetine when added to oral nonsteroidal anti-inflammatory drugs (NSAIDs) in patients with osteoarthritis (OA) of the knee with pain of moderate or greater severity.
- Single-legged hop tests as predictors of self-reported knee function in nonoperatively treated individuals with anterior cruciate ligament injury
Norwegian Research Center for Active Rehabilitation, Hjelp24 Norwegian Sports Medicine Clinic, Ulleval Stadion, Norway
Am J Sports Med 39:2347-54. 2011
..Previous studies have found significant predictors for functional outcome after anterior cruciate ligament (ACL) reconstruction; however, studies examining predictors for functional outcome in nonoperatively treated individuals are lacking...
- Surface EMG crosstalk between knee extensor muscles: experimental and model results
Dipartimento di Elettronica, Centro di Bioingegneria, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino 10129, Italy
Muscle Nerve 26:681-95. 2002
..This study clarifies many controversial findings of past investigations and creates the basis for crosstalk interpretation, simulation, and reduction...
- Muscle activity differs with load compliance during fatiguing contractions with the knee extensor muscles
Department of Integrative Physiology, University of Colorado, Boulder, CO 80309 0354, USA
Exp Brain Res 203:307-16. 2010
..influence of load compliance on the time to failure and rate of change in electromyographic (EMG) activity when the knee extensor muscles performed fatiguing contractions against submaximal loads...
- The John Insall Award: Both morphotype and gender influence the shape of the knee in patients undergoing TKA
University Hospitals of the Catholic University, Leuven, Belgium
Clin Orthop Relat Res 468:29-36. 2010
There is an ongoing debate whether gender differences in the dimensions of the knee should influence the design of TKA components...
- Comparison of the angles and corresponding moments in the knee and hip during restricted and unrestricted squats
Institute for Biomechanics, ETH Zurich, Zurich, Switzerland
J Strength Cond Res 26:2829-36. 2012
The aim of this study was to compare the angles and corresponding moments in the knee and hip during squats. Twenty subjects performed restricted and unrestricted squats with barbell loads that were 0, ¼, and ½ their body weight...
- Prevalence of reported knee pain over twelve years in a community-based cohort
University of Oxford, Oxford, UK
Arthritis Rheum 64:1145-52. 2012
To describe the temporal patterns of knee pain in a community-based cohort over 12 years.
- Age- and sex-associated differences in isokinetic knee muscle endurance between young children and adults
Mark B A De Ste Croix
Department of Sport and Exercise, University of Gloucestershire, Gloucester GL2 9HW, UK
Appl Physiol Nutr Metab 34:725-31. 2009
The purpose of this study was to examine the age- and sex-associated differences of repeated isokinetic knee extension and flexion...
- Effects of different methods of antagonist muscles pre-activation on knee extensors neuromuscular responses
Rodrigo L Carregaro
Universidade Federal de Mato Grosso do Sul, Campo Grande, MS, Brazil
Rev Bras Fisioter 15:452-9. 2011
..Pre-activation of antagonistic muscles is used in different modalities of exercise and neuromuscular rehabilitation protocols, but its effectiveness is still controversial...
- Abnormal coactivation of knee and ankle extensors is related to changes in heteronymous spinal pathways after stroke
Joseph Omer Dyer
Centre de recherche interdisciplinaire en réadaptation du Montréal métropolitain, Institut de réadaptation Gingras Lindsay de Montréal, Montreal, Canada
J Neuroeng Rehabil 8:41. 2011
- Heterogeneity in rate of decline in grip, hip, and knee strength and the risk of all-cause mortality: the Women's Health and Aging Study II
Qian Li Xue
Department of Medicine, School of Medicine, Johns Hopkins University, Baltimore, Maryland, USA
J Am Geriatr Soc 58:2076-84. 2010
..To assess the relationship between rate of change in muscle strength and all-cause mortality...
- The Knee Clinical Assessment Study--CAS(K). A prospective study of knee pain and knee osteoarthritis in the general population
Primary Care Sciences Research Centre, Keele University, Keele, North Staffordshire, United Kingdom ST5 5BG
BMC Musculoskelet Disord 5:4. 2004
b>Knee pain affects an estimated 25% of the adult population aged 50 years and over. Osteoarthritis is the most common diagnosis made in older adults consulting with knee pain in primary care...
- Muscle metabolism and activation heterogeneity by combined 31P chemical shift and T2 imaging, and pulmonary O2 uptake during incremental knee-extensor exercise
Daniel T Cannon
Rehabilitation Clinical Trials Center, Division of Respiratory and Critical Care Physiology and Medicine, Los Angeles Biomedical Research Institute at Harbor UCLA Medical Center, Torrance, California
J Appl Physiol (1985) 115:839-49. 2013
..spectroscopy, chemical shift imaging, and T2-weighted imaging with pulmonary oxygen uptake during bilateral knee-extension exercise to intolerance...
- Importance of preswing rectus femoris activity in stiff-knee gait
Jeffrey A Reinbolt
Department of Bioengineering, Stanford University, Clark Center, Room S 322, Mail Code 5450, 318 Campus Drive, Stanford, CA 94305 5450, USA
J Biomech 41:2362-9. 2008
Stiff-knee gait is characterized by diminished and delayed knee flexion during swing...
- Prevalence of self-reported pain, joint complaints and knee or hip complaints in adults aged ≥ 40 years: a cross-sectional survey in Herne, Germany
Department of Geriatrics, University of Bochum, Marienhospital Herne, Herne, Germany
PLoS ONE 8:e60753. 2013
..Despite their epidemiological, clinical and health economic importance, prevalence data on pain and musculoskeletal complaints for Germany are scarce...
- Knee acoustic emission: a potential biomarker for quantitative assessment of joint ageing and degeneration
L K Shark
Applied Digital Signal and Image Processing Research Centre, University of Central Lancashire, Preston, PR1 2HE, UK
Med Eng Phys 33:534-45. 2011
..knees in three different age groups (early, middle and late adulthood), this paper reports the potential of knee acoustic emission as a biomarker to monitor joint ageing and degeneration...
- Relationship between knee and ankle degeneration in a population of organ donors
Department of Biochemistry, Rush University Medical Center, Cohn Research Building, 1735 W Harrison, Chicago, IL 60612, USA
BMC Med 8:48. 2010
..The relationship of OA in one joint of an extremity to another joint within the same extremity, or between extremities, has been a topic of interest in reference to the etiology and/or progression of the disease...
- Mood and attitude predict pain outcomes following arthroscopic knee surgery
Patricia H Rosenberger
VA Connecticut Healthcare System, 950 Campbell Avenue, Psychology 116B, West Haven, CT 06516, USA
Ann Behav Med 37:70-6. 2009
Decreased pain represents a clinically important outcome following arthroscopic knee surgery. However, little is known about preoperative mood and attitudinal factors and their potential relationship with pain outcomes.
- Increase in outpatient knee arthroscopy in the United States: a comparison of National Surveys of Ambulatory Surgery, 1996 and 2006
Department of Orthopaedic Surgery, University of California Davis, 4860 Y Street, Suite 3800, Sacramento, CA 95817, USA
J Bone Joint Surg Am 93:994-1000. 2011
This study was proposed to investigate the changes in the utilization of knee arthroscopy in an ambulatory setting over the past decade in the United States as well as its implications.
- Total knee arthroplasty with use of computer-assisted navigation compared with conventional guiding systems in the same patient: radiographic results in Asian patients
Tsan Wen Huang
Division of Sports Medicine, Department of Orthopedic Surgery, Chang Gung Memorial Hospital, Chia Yi, Taiwan
J Bone Joint Surg Am 93:1197-202. 2011
The value of computer-assisted surgery in total knee arthroplasty for arthritic knees continues to be debated...
- Knee extensor fatigability after bedrest for 8 weeks with and without countermeasure
Edwin R Mulder
Radboud University Nijmegen Medical Center, Department of Clinical Neurophysiology, P O Box 9101, 6500 HB Nijmegen, The Netherlands
Muscle Nerve 36:798-806. 2007
..Changes in knee extensor fatigability as a consequence of 8 weeks of horizontal bedrest with or without daily resistive vibration ..
- Strength characterization of knee flexor and extensor muscles in Prader-Willi and obese patients
Orthopaedic Rehabilitation Unit and Clinical Lab for Gait Analysis and Posture, Ospedale San Giuseppe, Istituto Auxologico Italiano IRCCS, Piancavallo Verbania, Italy
BMC Musculoskelet Disord 10:47. 2009
..The aim of our study was to characterize the lower limb muscle function of patients affected by PWS as compared to non-syndromal obesity and normal-weight subjects...
- The effects of femoral graft placement on in vivo knee kinematics after anterior cruciate ligament reconstruction
E S Abebe
Sports Medicine Center, Department of Orthopaedic Surgery, Box 3093, Duke University Medical Center, Durham, NC 27710, USA
J Biomech 44:924-9. 2011
..study was to quantify the effect of femoral graft placement on the ability of ACL reconstruction to restore normal knee kinematics under in vivo loading conditions...
- Dynamic finite element knee simulation for evaluation of knee replacement mechanics
Mark A Baldwin
Computational Biomechanics Lab, University of Denver, Denver, CO 80208, USA
J Biomech 45:474-83. 2012
In vitro pre-clinical testing of total knee replacement (TKR) devices is a necessary step in the evaluation of new implant designs...
- Cutaneous receptors contribute to kinesthesia at the index finger, elbow, and knee
D F Collins
Human Neurophysiology Laboratory, Faculty of Physical Education and Recreation, Centre for Neuroscience, University of Alberta, Edmonton, Alberta, Canada
J Neurophysiol 94:1699-706. 2005
..Illusory movements were evoked at the interphalangeal (IP) joints of the index finger, the elbow, and the knee by stimulation of populations of cutaneous and muscle spindle receptors, both separately and together...
- The biomechanical effects of focused muscle training on medial knee loads in OA of the knee: a pilot, proof of concept study
L E Thorp
Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, IL, USA
J Musculoskelet Neuronal Interact 10:166-73. 2010
High dynamic loads of the medial knee are associated with tibiofemoral osteoarthritis (OA) severity and progression...
- Virtual reality simulation of arthroscopy of the knee
Jay D Mabrey
American Academy of Orthopaedic Surgeons, Council on Education Task Force on Virtual Reality, USA
Arthroscopy 18:E28. 2002
The virtual reality arthroscopic knee simulator (VR-AKS) consists of a computer platform, a video display, and two force-feedback (haptic) interfaces known as "PHANToMs" that also monitor the position of the instruments in the user's ..
- MR imaging of entrapment neuropathies of the lower extremity. Part 2. The knee, leg, ankle, and foot
Department of Radiology, Sunnybrook Health Sciences Centre, 2075 Bayview Ave, Toronto, ON, Canada
Radiographics 30:1001-19. 2010
Entrapment neuropathies of the knee, leg, ankle, and foot are often underdiagnosed, as the results of clinical examination and electrophysiologic evaluation are not always reliable...
- Navigation as a predictor of soft tissue release during 90 cases of computer-assisted total knee arthroplasty
Department of Orthopedic Surgery and Sport Traumatology, Greonoble University South Teaching Hospital, Echirolles, France
Orthopedics 29:S137-8. 2006
Soft tissue balance during total knee arthroplasty (TKA) procedures may be challenging to achieve in knees with severe valgus or varus deformities...
- The MRI appearance of cystic lesions around the knee
Catherine L McCarthy
Department of Radiology, Nuffield Orthopaedic Centre, Windmill Road, Headington, Oxford, OX3 7LD, UK
Skeletal Radiol 33:187-209. 2004
This review presents a comprehensive illustrated overview of the wide variety of cystic lesions around the knee. The aetiology, clinical presentation, MRI appearances and differential diagnosis are discussed...
- Intensive lifestyle intervention improves physical function among obese adults with knee pain: findings from the Look AHEAD trial
Capri G Foy
Division of Public Health Sciences, Wake Forest University School of Medicine, Winston Salem, North Carolina, USA
Obesity (Silver Spring) 19:83-93. 2011
..investigation involved participants in the Action for Health in Diabetes (Look AHEAD) trial who reported knee pain at baseline (n = 2,203)...
- Effects of neuromuscular electrical stimulation on muscle layer thickness of knee extensor muscles in intensive care unit patients: a pilot study
Joint and Bone Center Center for Diagnosis, Research and Therapy of Musculoskeletal Disorders, Medical University of Vienna, Vienna, Austria
J Rehabil Med 42:593-7. 2010
..The aim of this study was to evaluate the effects of neuromuscular electrical stimulation on muscle layer thickness of knee extensor muscles in intensive care unit patients.
- Postoperative deep infection in tumor endoprosthesis reconstruction around the knee
Department of Orthopaedic Surgery, Kyorin University, Tokyo, Japan
J Orthop Sci 15:331-9. 2010
- Evaluating the responsiveness of the ICOAP following hip or knee replacement
A M Davis
Division of Health Care and Outcomes Research, Toronto Western Research Institute, University Health Network, Toronto, Canada
Osteoarthritis Cartilage 18:1043-5. 2010
..The purpose of this study was to evaluate the responsiveness of the ICOAP, and different pain constructs in primary total hip (THR) and total knee (TKR) replacement.
- Knee muscle activity during ambulation of trans-tibial amputees
Orthopedic Rehabilitation Department, Loewenstein Hospital, Ra anana, Israel
J Rehabil Med 33:196-9. 2001
..05) smaller ratio (0.22) compared with the sound leg (0.83). The use of prosthesis in trans-tibial amputees requires further activity of the biceps femoris during stance period to improve support of the amputated leg knee joint.
- Knee extension strength cutpoints for maintaining mobility
Todd M Manini
Institute on Aging, Department of Aging and Geriatric Research, Amsterdam, The Netherlands
J Am Geriatr Soc 55:451-7. 2007
To identify levels of knee extensor strength that are associated with high and low risk of incident severe mobility limitation (SML) in initially well-functioning older adults.
- Gait after unilateral total knee arthroplasty: frontal plane analysis
Ali H Alnahdi
Graduate Program in Biomechanics and Movement Science, University of Delaware, 301 McKinly Lab, Newark, Delaware 19716, USA
J Orthop Res 29:647-52. 2011
After unilateral total knee arthroplasty (TKA), osteoarthritis (OA) in the non-operated knee often progresses...
- Baseline articular contact stress levels predict incident symptomatic knee osteoarthritis development in the MOST cohort
Neil A Segal
Department of Orthopaedics and Rehabilitation, The University of Iowa, Iowa City, Iowa, USA
J Orthop Res 27:1562-8. 2009
We studied whether contact stress estimates from knee magnetic resonance images (MRI) predict the development of incident symptomatic tibiofemoral osteoarthritis (OA) 15 months later in an at-risk cohort...
- Function of posterior cruciate ligament bundles during in vivo knee flexion
Bioengineering Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114, USA
Am J Sports Med 35:1507-12. 2007
The biomechanical functions of the anterolateral and posteromedial bundles of the posterior cruciate ligament over the range of flexion of the knee joint remain unclear.
- Exercise, self-efficacy, and mobility performance in overweight and obese older adults with knee osteoarthritis
Brian C Focht
Ohio State University, Columbus, 43210, USA
Arthritis Rheum 53:659-65. 2005
..self efficacy following exercise and dietary weight loss interventions in overweight and obese older adults with knee osteoarthritis (OA), and to determine if self efficacy and pain mediate the effects of the interventions on ..
- Knee extension strength and body weight determine sit-to-stand independence after stroke
Richard W Bohannon
Department of Physical Therapy, University of Connecticut, Neag School of Education, University of Connecticut, Storrs, CT 06269 2101, USA
Physiother Theory Pract 23:291-7. 2007
..This study sought to determine the importance of knee extension force and body weight to independence in STS...
- The female knee: anatomic variations
Americas and Global Marketing
J Am Acad Orthop Surg 15:S31-6. 2007
Traditional knee implants have been designed "down the middle,"based on the combined average size and shape of male and female knee anatomy...
- Influence of concentric and eccentric resistance training on architectural adaptation in human quadriceps muscles
Anthony J Blazevich
Centre for Sports Medicine and Human Performance, School of Sport and Education, Brunel Univ, Uxbridge UB8 3PH, UK
J Appl Physiol (1985) 103:1565-75. 2007
..men and women performed slow-speed (30 degrees /s) concentric-only (Con) or eccentric-only (Ecc) isokinetic knee extensor training for 10 wk before completing a 3-mo detraining period...
- Human femoral artery diameter in relation to knee extensor muscle mass, peak blood flow, and oxygen uptake
Copenhagen Muscle Research Centre, Rigshospitalet, DK 2200 Copenhagen N, Denmark
Am J Physiol Heart Circ Physiol 278:H162-7. 2000
..90 +/- 0.31 (range 2.29-5.03) l/min during ergometer cycle exercise, performed one-legged dynamic knee extensor exercise up to peak effort at 68 +/- 7 W (range 55-100 W)...
- Relationship of knee extension force to independence in sit-to-stand performance in patients receiving acute rehabilitation
Wilton Physical Therapy, Wilton, Conn, USA
Phys Ther 83:544-51. 2003
..This study was conducted to determine to what extent knee extension force (KEF) could explain independence in sit-to-stand (STS) performance from a standard chair.
- Fondaparinux compared with enoxaparin for the prevention of venous thromboembolism after elective major knee surgery
K A Bauer
Department of Medicine, Veterans Affairs Boston Healthcare System and Beth Israel Deaconess Medical Center, MA 02215, USA
N Engl J Med 345:1305-10. 2001
Despite thromboprophylaxis, major knee surgery carries a high risk of venous thromboembolism. Fondaparinux, the first of a new class of synthetic antithrombotic agents, may reduce this risk.
- The Chitranjan Ranawat Award: The nonoperated knee predicts function 3 years after unilateral total knee arthroplasty
Department of Physical Therapy, University of Delaware, Newark, DE 19716, USA
Clin Orthop Relat Res 468:37-44. 2010
The long-term functional abilities of patients after a unilateral total knee arthroplasty (TKA) are influenced by the status of the nonoperated knee at the time of the TKA...
- The difference in trochlear orientation between the natural knee and current prosthetic knee designs; towards a truly physiological prosthetic groove orientation
Orthopaedic Research Lab, Department of Orthopaedics, Radboud University Nijmegen Medical Centre, P O Box 9101, 6500 HB Nijmegen, The Netherlands
J Biomech 39:1708-15. 2006
The patella groove of total knee replacements has evolved from a groove with a neutral orientation to a groove with a lateral (also referred to as valgus) orientation...
- Reproducibility of measurement of femoral component rotation after total knee arthroplasty using computer tomography
Department of Orthopaedic Surgery, University of Zurich, Balgrist, Switzerland
J Arthroplasty 21:744-8. 2006
..CTA) and the posterior condylar angle (PCA) describe rotational alignment of the femoral component after total knee arthroplasty...
- The effects of adding mass to the legs on the energetics and biomechanics of walking
Raymond C Browning
Department of Integrative Physiology, University of Colorado, Boulder, CO 80262, USA
Med Sci Sports Exerc 39:515-25. 2007
- A subject specific multibody model of the knee with menisci
Trent M Guess
Mechanical Engineering, University of Missouri Kansas City, 350K Flarsheim Hall, 5100 Rockhill Road, Kansas City, MO 64110 2499, USA
Med Eng Phys 32:505-15. 2010
The menisci of the knee play an important role in joint function and our understanding of knee mechanics and tissue interactions can be enhanced through computational models of the tibio-menisco-femoral structure...
- MR imaging of cysts, ganglia, and bursae about the knee
Francesca D Beaman
Center Radiology, PC, Washington Hospital Center, 110 Irving Street NW, Washington, DC 20010, USA
Magn Reson Imaging Clin N Am 15:39-52. 2007
Cystic lesions around the knee comprise a diverse group of entities, ranging from benign cysts to complications of underlying diseases such as infection, arthritis, and malignancy...
- Comparison of muscle strength and flexibility between the preferred and non-preferred leg in English soccer players
Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Henry Cotton Campus, 15 21 Webster Street, Liverpool L3 2ET, UK
Ergonomics 48:1568-75. 2005
..81 +/- 0.06 m; body mass 81.7 +/- 9.9 kg) were studied (data are presented as mean +/- SD). The dynamic strength of knee flexors (hamstrings) and knee extensors (quadriceps) was measured using an isokinetic dynamometer at angular ..
- Repair of articular cartilage defects in the patello-femoral joint with autologous bone marrow mesenchymal cell transplantation: three case reports involving nine defects in five knees
Department of Orthopaedic Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan
J Tissue Eng Regen Med 1:74-9. 2007
..Autologous bone marrow mesenchymal cells transplantation may be an effective approach to promote the repair of articular cartilage defects...
- Reliability of hand-held dynamometry in assessment of knee extensor strength after hip fracture
Marc Andre Gilles Roy
School of Kinesiology, University of Western Ontario, London, Ontario, Canada
Am J Phys Med Rehabil 83:813-8. 2004
To examine the reliability of hand-held dynamometry in assessing knee extensor strength in inpatients undergoing rehabilitation after hip fracture and to examine the discriminant validity of this measure.
- Strength and power changes of the human plantar flexors and knee extensors in response to resistance training in old age
Centro Studi Attività Motorie CSAM, Fondazione S Maugeri, Clinica del Lavoro e della Riabilitazione, IRCCS, Pavia, Italy
Acta Physiol Scand 177:69-78. 2003
..The aim of the present study was to assess and compare the improvements of muscle strength and power induced by a 16-week resistive programme in a population of 16 older men aged 65-81 years...
- Determinants of hand grip strength, knee extension strength and functional status in cancer patients
Charité Universitätsmedizin Berlin Campus Mitte, Dept of Gastroenterology, Germany
Clin Nutr 29:586-91. 2010
Decreased functionality and muscle weakness are prominent features in cancer patients. We investigated determinants of muscle function assessed by hand grip and knee extension strength as well as functional status in cancer patients.
- Locomotor exercise induces long-lasting impairments in the capacity of the human motor cortex to voluntarily activate knee extensor muscles
Simranjit K Sidhu
University of New South Wales, Sydney, Australia
J Appl Physiol (1985) 106:556-65. 2009
..Brief (2 s) and sustained (30 s) isometric knee extension contractions were completed before and after locomotor exercise consisting of eight, 5-min bouts of ..
- Hip strength and hip and knee kinematics during stair descent in females with and without patellofemoral pain syndrome
Lori A Bolgla
Medical College of Georgia, School of Allied Health Sciences, Department of Physical Therapy, Augusta, GA, USA
J Orthop Sports Phys Ther 38:12-8. 2008
- Differences in size, strength, and power of upper and lower body muscle groups in young and older men
Darren G Candow
87 Campus Drive, College of Kinesiology, University of Saskatchewan, Saskatoon, SK, Canada S7N 5B2
J Gerontol A Biol Sci Med Sci 60:148-56. 2005
..05 rad/s and 3.14 rad/s in flexor and extensor muscles of the elbow and knee, and in ankle plantar flexors in young (n=22, 18-31 years) and older (n=28, 59-76 years) men...
- Volitional control of a prosthetic knee using surface electromyography
Kevin H Ha
Department of Mechanical Engineering, Vanderbilt University, Nashville, TN 37235, USA
IEEE Trans Biomed Eng 58:144-51. 2011
This paper presents a method for providing volitional control of a powered knee prosthesis during nonweight-bearing activity such as sitting...
- Reduction of spastic hypertonia during repeated passive knee movements in stroke patients
Godelieve E Nuyens
Department of Rehabilitation Sciences, Faculty of Physical Education and Physiotherapy, University of Leuven, Belgium
Arch Phys Med Rehabil 83:930-5. 2002
To quantify changes in spastic hypertonia during repeated passive isokinetic knee movements in stroke patients and to assess the role of muscle activity.
- Knee muscle isometric strength, voluntary activation and antagonist co-contraction in the first six months after stroke
D J Newham
Applied Biomedical Research Group, School of Biomedical Sciences, King s College London, UK
Disabil Rehabil 23:379-86. 2001
..We investigated voluntary isometric strength, activation and the extent of co-contraction in the knee muscles during the first six months during stroke.
- Effectiveness of medial-wedge insole treatment for valgus knee osteoarthritis
Priscilla T Rodrigues
School of Medicine, University of Sao Paulo, Sao Paulo, Brazil
Arthritis Rheum 59:603-8. 2008
To assess the efficacy of medial-wedge insoles in valgus knee osteoarthritis (OA).
- Compliant walking in primates: elbow and knee yield in primates compared to other mammals
Interdepartmental Doctoral Program in Anthropological Sciences, Stony Brook University, Stony Brook, New York 11794 4364, USA
Am J Phys Anthropol 125:42-50. 2004
..In order to explore the generality of this claim, elbow and knee angles during walking were documented at touchdown, midstance, and liftoff in a sample of primates, carnivores, ..
- MRI features of cystic lesions around the knee
Monica D Marra
Department of Radiology, Boston University Medical Center, FGH Building, 3rd Floor, 820 Harrison Ave, Boston, MA 02118, United States
Knee 15:423-38. 2008
Cystic lesions around the knee are a diverse group of entities, frequently encountered during routine MRI of the knee...
- Which patients with osteoarthritis of hip and/or knee benefit most from behavioral graded activity?
NIVEL Netherlands Institute for Health Services Research, Utrecht, The Netherlands
Int J Behav Med 14:86-91. 2007
..Two hundred participants with OA of hip or knee, or both (clinical American College of Rheumatology, ACR, criteria) participated in a randomized clinical trial on ..
- Cystic masses of the knee: magnetic resonance imaging findings
Douglas P Beall
Department of Radiological Sciences, Oklahoma University Health Sciences Center, Oklahoma City, OK 73104, USA
Curr Probl Diagn Radiol 34:143-59. 2005
Cystic masses of the knee comprise a diverse group of pathologic entities ranging from simple cysts to complications of underlying disease to tumors...
- Measuring knee extensor muscle strength
R W Bohannon
Department of Physical Therapy, School of Allied Health, University of Connecticut, Storrs 06269-2101, USA
Am J Phys Med Rehabil 80:13-8. 2001
OBJECTIVE: To compare manual muscle test with hand-held dynamometer measurements of knee extension strength. A secondary analysis of measurements (n = 256 knees) from 128 acute rehabilitation patients was performed...
- Knee complaints vary with age and gender in the adult population. Population-based reference data for the Knee injury and Osteoarthritis Outcome Score (KOOS)
Przemyslaw T Paradowski
Department of Orthopedics, Clinical Sciences, Lund University Hospital, SE 221 85 Lund, Sweden
BMC Musculoskelet Disord 7:38. 2006
Self-reported knee complaints may vary with age and gender. Reference data from the adult population would help to better interpret the outcome of interventions due to knee complaints...
- Excision of heterotopic ossification from the knee: a functional outcome study
David A Fuller
Moss Rehab Hospital, Philadelphia, PA, USA
Clin Orthop Relat Res 438:197-203. 2005
..Our primary research goal was to determine the change in range of motion at the knee after resection of heterotopic ossification in patients with neurologic injuries...
- Women have increased rates of cartilage loss and progression of cartilage defects at the knee than men: a gender study of adults without clinical knee osteoarthritis
Fahad S Hanna
Department of Epidemiology and Preventive Medicine, Monash University, Central and Eastern Clinical School, Alfred Hospital, Melbourne, Victoria, Australia
Menopause 16:666-70. 2009
Women have an increased risk of knee osteoarthritis (OA). However, little is known about gender differences in cartilage health before the onset of clinical knee OA...
- Anterior knee pain and cold knees: a possible association in women
School of Public Health and Clinical Sciences, University of Central Lancashire, Preston, Lancashire, United Kingdom
Knee 17:319-23. 2010
Abnormal reactions to environmental cold have been observed in some patients with Anterior Knee Pain (AKP)...
- Does total knee arthroplasty change frontal plane knee biomechanics during gait?
Karl F Orishimo
Nicholas Institute of Sports Medicine and Athletic Trauma, Lenox Hill Hospital, 100 E 77th Street, 2nd Floor, New York, NY 10075, USA
Clin Orthop Relat Res 470:1171-6. 2012
Dynamic knee varus angle and adduction moments have been reported to be reduced after TKA. However, it is unclear whether this reduction is maintained long term.
- Principles of brain plasticity in improving sensorimotor function of the knee and leg in healthy subjects: a double-blind randomized exploratory trial
Department of Orthopedics, Clinical Sciences Lund, Lund University, Sweden
BMC Musculoskelet Disord 10:99. 2009
..Training is included in the treatment of knee injury to improve both patient-reported function and sensorimotor function...