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Knee

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139 papers 1000+ followers MH Residency - Knee
https://www.readbyqxmd.com/read/28378137/hip-external-rotation-strength-predicts-hop-performance-after-anterior-cruciate-ligament-reconstruction
#1
Paul W Kline, Jeremy Burnham, Michael Yonz, Darren Johnson, Mary Lloyd Ireland, Brian Noehren
PURPOSE: Quadriceps strength and single-leg hop performance are commonly evaluated prior to return to sport after anterior cruciate ligament reconstruction (ACLR). However, few studies have documented potential hip strength deficits after ACLR, or ascertained the relative contribution of quadriceps and hip strength to hop performance. METHODS: Patients cleared for return to sports drills after ACLR were compared to a control group. Participants' peak isometric knee extension, hip abduction, hip extension, and hip external rotation (HER) strength were measured...
April 4, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28406879/physical-examination-of-the-knee-meniscus-cartilage-and-patellofemoral-conditions
#2
Robert D Bronstein, Joseph C Schaffer
The knee is one of the most commonly injured joints in the body. Its superficial anatomy enables diagnosis of the injury through a thorough history and physical examination. Examination techniques for the knee described decades ago are still useful, as are more recently developed tests. Proper use of these techniques requires understanding of the anatomy and biomechanical principles of the knee as well as the pathophysiology of the injuries, including tears to the menisci and extensor mechanism, patellofemoral conditions, and osteochondritis dissecans...
May 2017: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/27530387/return-to-knee-strenuous-sport-after-anterior-cruciate-ligament-reconstruction-a-report-from-a-rehabilitation-outcome-registry-of-patient-characteristics
#3
Eric Hamrin Senorski, Kristian Samuelsson, Christoffer Thomeé, Susanne Beischer, Jón Karlsson, Roland Thomeé
PURPOSE: To characterise patients who returned to knee-strenuous sports after an anterior cruciate ligament (ACL) reconstruction. METHODS: Data from isotonic tests of muscle function and patient-reported outcome measures, Tegner activity scale (Tegner and Lysholm in Clin Orthop Relat Res 198:43-49, 1985), physical activity scale, knee injury and osteoarthritis scale and knee self-efficacy scale were extracted from a registry. The 157 included patients, 15-30 years of age, had undergone primary ACL reconstruction and were all involved in knee-strenuous sports, i...
August 16, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28259349/editorial-commentary-the-time-has-come-to-try-intra-articular-platelet-rich-plasma-injections-for-your-patients-with-symptomatic-knee-osteoarthritis
#4
EDITORIAL
Timothy J Hunt
Platelet-rich plasma injections, in a systematic review and meta-analysis of 10 Level I randomized control trials, were found to provide more pain relief and better functional outcomes than hyaluronic acid in patients with knee osteoarthritis at 12 months after injection. The time has come for those of us who have not yet tried platelet-rich plasma injections in our patients with symptomatic knee osteoarthritis to do so.
March 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/27337173/tibiofemoral-contact-forces-in-the-anterior-cruciate-ligament-reconstructed-knee
#5
David John Saxby, Adam L Bryant, Luca Modenese, Pauline Gerus, Bryce A Killen, Jason Konrath, Karine Fortin, Tim V Wrigley, Kim L Bennell, Flavia M Cicuttini, Christopher Vertullo, Julian A Feller, Tim Whitehead, Price Gallie, David G Lloyd
PURPOSE: To investigate differences in anterior cruciate ligament-reconstructed (ACLR) and healthy individuals in terms of the magnitude of the tibiofemoral contact forces, as well as the relative muscle and external load contributions to those contact forces, during walking, running, and sidestepping gait tasks. METHODS: A computational EMG-driven neuromusculoskeletal model was used to estimate the muscle and tibiofemoral contact forces in those with single-bundle combined semitendinosus and gracilis tendon autograft ACLR (n = 104, 29...
November 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28224442/report-of-the-primary-outcomes-for-gait-mechanics-in-men-of-the-acl-sports-trial-secondary-prevention-with-and-without-perturbation-training-does-not-restore-gait-symmetry-in-men-1-or-2-years-after-acl-reconstruction
#6
Jacob John Capin, Ryan Zarzycki, Amelia Arundale, Kathleen Cummer, Lynn Snyder-Mackler
BACKGROUND: Movement asymmetries during walking are common after anterior cruciate ligament (ACL) injury and reconstruction and may influence the early development of posttraumatic osteoarthritis. Preoperative neuromuscular training (like perturbation training, which is neuromuscular training requiring selective muscle activation in response to surface perturbations) improves gait asymmetries and functional outcomes among people who are ACL-deficient, but the effect of postoperative perturbation training on gait mechanics after ACL reconstruction is unknown...
February 21, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28273424/is-quadriceps-tendon-autograft-a-better-choice-than-hamstring-autograft-for-anterior-cruciate-ligament-reconstruction
#7
Etienne Cavaignac, Benoit Coulin, Philippe Tscholl, Nik Nik Mohd Fatmy, Victoria Duthon, Jacques Menetrey
BACKGROUND: The quadriceps tendon (QT) autograft is known as an effective graft for anterior cruciate ligament (ACL) reconstruction and shows a similar functional outcome to the bone-patellar tendon-bone (BPTB) in randomized controlled trials, with a lesser incidence of complications. Up until now, only 2 studies have compared QT to hamstring tendon (HT) autograft. HYPOTHESIS: The functional outcomes of the QT technique are at least as good as those of the HT technique, with the same morbidity...
March 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28199800/preventive-biomechanics
#8
Timothy E Hewett, Nathaniel A Bates
BACKGROUND: Preventive medicine techniques have alleviated billions of dollars' worth of the economic burden in the medical care system through the implementation of vaccinations and screenings before the onset of disease symptoms. Knowledge of biomechanical tendencies has progressed rapidly over the past 20 years such that clinicians can identify, in healthy athletes, the underlying mechanisms that lead to catastrophic injuries such as anterior cruciate ligament (ACL) ruptures. As such, preventive medicine concepts can be applied to noncontact musculoskeletal injuries to reduce the economic burden of sports medicine treatments and enhance the long-term health of athletes...
February 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28151693/anterolateral-ligament-reconstruction-is-associated-with-significantly-reduced-acl-graft-rupture-rates-at-a-minimum-follow-up-of-2-years
#9
Bertrand Sonnery-Cottet, Adnan Saithna, Maxime Cavalier, Charles Kajetanek, Eduardo Frois Temponi, Matt Daggett, Camilo Partezani Helito, Mathieu Thaunat
BACKGROUND: Graft failure and low rates of return to sport are major concerns after anterior cruciate ligament (ACL) reconstruction, particularly in a population at risk. PURPOSE: To evaluate the association between reconstruction techniques and subsequent graft rupture and return-to-sport rates in patients aged 16 to 30 years participating in pivoting sports. STUDY DESIGN: Cohort study; Level of evidence, 2. METHODS: A prospective study of patients undergoing primary ACL reconstruction with a bone-patellar tendon-bone (B-PT-B) graft, quadrupled hamstring tendon (4HT) graft, or hamstring tendon graft combined with anterolateral ligament reconstruction (HT+ALL) was conducted by the Scientific ACL NeTwork International (SANTI) Study Group...
February 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28233675/trajectory-of-self-reported-pain-and-function-and-knee-extensor-muscle-strength-in-young-patients-undergoing-arthroscopic-surgery-for-meniscal-tears-a-systematic-review-and-meta-analysis
#10
REVIEW
Jonas Bloch Thorlund, Lasse Østengaard, Nathan Cardy, Fiona Wilson, Claus Jørgensen, Carsten Bogh Juhl
OBJECTIVES: To investigate the trajectory of patient reported pain and function and knee extensor muscle strength over time in young individuals undergoing arthroscopic meniscal surgery. DESIGN: Systematic review and meta-analysis METHODS: Six databases were searched up to October 13th, 2016. PATIENTS AND INTERVENTION: People aged 30 years or younger undergoing surgery for a meniscal tear. OUTCOMES: and comparator: (1) Self-reported pain and function in patients undergoing meniscal surgery compared to a non-operative control group (2)...
February 20, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/27900339/an-ecological-study-of-anterior-cruciate-ligament-reconstruction-part-1-clinical-tests-do-not-correlate-with-return-to-sport-outcomes
#11
Timothy M McGrath, Gordon Waddington, Jennie M Scarvell, Nick Ball, Rob Creer, Kevin Woods, Damian Smith, Roger Adams
BACKGROUND: Additional high-quality prospective studies are needed to better define the objective criteria used in relation to return-to-sport decisions after synthetic (ligament advanced reinforcement system [LARS]) and autograft (hamstring tendon [2ST/2GR]) anterior cruciate ligament (ACL) reconstruction in active populations. PURPOSE: To prospectively investigate and describe the recovery of objective clinical outcomes after autograft (2ST/2GR) and synthetic (LARS) ACL reconstructions, as well as to investigate the relationship between these clinimetric test outcomes and return-to-sport activity (Tegner activity scale [TAS] score) at 12 and 24 months postoperatively...
November 2016: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/26075142/relationship-between-isokinetic-knee-strength-and-jump-characteristics-following-anterior-cruciate-ligament-reconstruction
#12
Kevin Laudner, Daniel Evans, Regan Wong, Aaron Allen, Tom Kirsch, Brian Long, Keith Meister
BACKGROUND: Clinicians are often challenged when making return-to-play decisions following anterior cruciate ligament reconstruction (ACL-R). Isokinetic strength and jump performance testing are common tools used to make this decision. Unfortunately, vertical jump performance standards have not been clearly established and many clinicians do not have access to isokinetic testing equipment. PURPOSE: To establish normative jump and strength characteristics in ACL-R patients cleared by an orthopedic physician to return-to-play and to determine if relationships exist between knee isokinetic strength measurements and jump characteristics described using an electronic jump map system...
June 2015: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/26205480/return-to-sport-does-excellent-6-month-strength-and-function-following-acl-reconstruction-predict-midterm-outcomes
#13
Paul L Sousa, Aaron J Krych, Robert A Cates, Bruce A Levy, Michael J Stuart, Diane L Dahm
PURPOSE: The purpose of this study was to determine whether patients with excellent 6-month functional testing after ACL reconstruction had (1) higher risk of subsequent ACL tears, (2) superior knee function, and (3) increased activity levels compared to those with delayed clearance for return to sports at midterm follow-up. METHODS: A total of 223 patients underwent primary ACL reconstruction by a single surgeon and had functional and isokinetic testing performed 6 months post-operatively between 1998 and 2005...
July 24, 2015: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/26183172/the-influence-of-quadriceps-strength-asymmetry-on-patient-reported-function-at-time-of-return-to-sport-after-anterior-cruciate-ligament-reconstruction
#14
Christin Zwolski, Laura C Schmitt, Catherine Quatman-Yates, Staci Thomas, Timothy E Hewett, Mark V Paterno
BACKGROUND: An objective assessment of quadriceps strength after anterior cruciate ligament reconstruction (ACLR) is an important clinical measure to determine readiness to return to sport (RTS). Not all clinicians are equipped with the means to objectively quantify quadriceps strength limb symmetry indices (Q-LSIs) via lower extremity isokinetic dynamometers, as recommended by previous studies. PURPOSE/HYPOTHESIS: The purpose of this study was to determine whether the International Knee Documentation Committee 2000 Subjective Knee Form (IKDC) score at time of RTS was a predictor of quadriceps strength in a young, athletic population after ACLR...
September 2015: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/25026933/speed-not-magnitude-of-knee-extensor-torque-production-is-associated-with-self-reported-knee-function-early-after-anterior-cruciate-ligament-reconstruction
#15
Chao-Jung Hsieh, Peter A Indelicato, Michael W Moser, Krista Vandenborne, Terese L Chmielewski
PURPOSE: To examine the magnitude and speed of knee extensor torque production at the initiation of advanced anterior cruciate ligament (ACL) reconstruction rehabilitation and the associations with self-reported knee function. METHODS: Twenty-eight subjects who were 12 weeks post-ACL reconstruction and 28 age- and sex-matched physically active controls participated in this study. Knee extensor torque was assessed bilaterally with an isokinetic dynamometer at 60°/s...
November 2015: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/26471854/quadriceps-strength-muscle-activation-failure-and-patient-reported-function-at-the-time-of-return-to-activity-in-patients-following-anterior-cruciate-ligament-reconstruction-a-cross-sectional-study
#16
Lindsey K Lepley, Riann M Palmieri-Smith
STUDY DESIGN: Cross-sectional. OBJECTIVES: To determine if quadriceps activation failure (QAF) moderates the relationship between quadriceps strength and physical function in individuals following anterior cruciate ligament (ACL) reconstruction. BACKGROUND: Quadriceps activation failure may impair the recovery of physical function after ACL reconstruction, given that QAF reduces strength and strength is related to physical function. Evidence of this relationship has been found in individuals with knee osteoarthritis, wherein patients with lower strength and greater QAF had lower levels of physical function...
December 2015: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/26255134/comparison-of-knee-flexion-isokinetic-deficits-between-seated-and-prone-positions-after-acl-reconstruction-with-hamstrings-graft-implications-for-rehabilitation-and-return-to-sports-decisions
#17
Georgios Koutras, Manfred Bernard, Ioannis P Terzidis, Pericles Papadopoulos, Anastasios Georgoulis, Evangelos Pappas
OBJECTIVES: Hamstrings grafts are commonly used in ACL reconstruction, however, the effect of graft harvesting on knee flexion strength has not been longitudinally evaluated in functional positions. We hypothesized that greater deficits in knee flexion strength exist in the prone compared to the seated position and these deficits remain as rehabilitation progresses. DESIGN: Case series. METHODS: Forty-two consecutive patients who underwent ACL reconstruction with a hamstrings graft were followed prospectively for 9 months...
July 2016: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/27215935/likelihood-of-acl-graft-rupture-not-meeting-six-clinical-discharge-criteria-before-return-to-sport-is-associated-with-a-four-times-greater-risk-of-rupture
#18
Polyvios Kyritsis, Roald Bahr, Philippe Landreau, Riadh Miladi, Erik Witvrouw
BACKGROUND: The decision as to whether or not an athlete is ready to return to sport (RTS) after ACL reconstruction is difficult as the commonly used RTS criteria have not been validated. PURPOSE: To evaluate whether a set of objective discharge criteria, including muscle strength and functional tests, are associated with risk of ACL graft rupture after RTS. MATERIALS AND METHODS: 158 male professional athletes who underwent an ACL reconstruction and returned to their previous professional level of sport were included...
August 2016: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/27128669/quadriceps-function-and-gait-kinetics-after-anterior-cruciate-ligament-reconstruction
#19
J Troy Blackburn, Brian Pietrosimone, Matt S Harkey, Brittney A Luc, Derek N Pamukoff
PURPOSE: Chronic quadriceps dysfunction has been implicated as a contributor to knee osteoarthritis (OA) development after anterior cruciate ligament reconstruction (ACLR). This dysfunction potentially leads to impulsive/high-rate loading during gait, thus accelerating cartilage degradation. The purpose of this study was to examine relationships between several indices of quadriceps function and gait biomechanics linked to knee OA development in individuals with ACLR. METHODS: Gait biomechanics and quadriceps function were assessed in 39 individuals with ACLR...
September 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27766275/quantifying-quadriceps-muscle-strength-in-patients-with-acl-injury-focal-cartilage-lesions-and-degenerative-meniscus-tears-differences-and-clinical-implications
#20
Ingrid Eitzen, Hege Grindem, Agnethe Nilstad, Håvard Moksnes, May Arna Risberg
BACKGROUND: Reduced quadriceps strength influences knee function and increases the risk of knee osteoarthritis. Thus, it is of significant clinical relevance to precisely quantify strength deficits in patients with knee injuries. PURPOSE: To evaluate isokinetic concentric quadriceps muscle strength torque values, assessed both from peak torque and at specific knee flexion joint angles, in patients with anterior cruciate ligament (ACL) injury, focal cartilage lesions, and degenerative meniscus tears...
October 2016: Orthopaedic Journal of Sports Medicine
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