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Allograft ligament

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https://www.readbyqxmd.com/read/28426251/current-concepts-of-the-anterolateral-ligament-of-the-knee-anatomy-biomechanics-and-reconstruction
#1
Matthew J Kraeutler, K Linnea Welton, Jorge Chahla, Robert F LaPrade, Eric C McCarty
In 1879, Paul Segond described an avulsion fracture (now known as a Segond fracture) at the anterolateral proximal tibia with the presence of a fibrous band at the location of this fracture. Although references to this ligament were occasionally made in the anatomy literature after Segond's discovery, it was not until 2012 that Vincent et al named this ligament what we know it as today, the anterolateral ligament (ALL) of the knee. The ALL originates near the lateral epicondyle of the distal femur and inserts on the proximal tibia near Gerdy's tubercle...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28419808/outcomes-after-1-stage-versus-2-stage-revision-anterior-cruciate-ligament-reconstruction
#2
Justin J Mitchell, Jorge Chahla, Chase S Dean, Mark Cinque, Lauren M Matheny, Robert F LaPrade
BACKGROUND: Revision anterior cruciate ligament reconstruction (ACLR) is becoming increasingly common as the number of primary ACLR cases continues to rise. Despite this, there are limited data on the outcomes of revision ACLR and even less information specifically addressing the differences in 1-stage revision reconstruction versus those performed in a 2-stage fashion after primary reconstruction. PURPOSE: To compare the outcomes, patient satisfaction, and failure rates of 1-stage versus 2-stage revision ACLR...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28392051/evaluating-the-femoral-side-critical-corner-in-posterior-cruciate-ligament-reconstruction-the-effect-of-outside-in-versus-inside-out-creation-of-femoral-tunnels-on-graft-contact-pressure-in-a-synthetic-knee-model
#3
Steven J Narvy, George F Hatch, Hansel E Ihn, Nathanael D Heckmann, Michelle H McGarry, James E Tibone, Thay Q Lee
PURPOSE: To characterize and compare the graft contact characteristics of outside-in (OI) and inside-out (IO) femoral tunnels during single-bundle reconstruction of the anterolateral bundle of the posterior cruciate ligament in a synthetic knee model. METHODS: Femoral tunnels were separately made in 16 synthetic femora (8 OI and 8 IO). Achilles tendon allografts were fixed using suspensory fixation with a pressure sensor between the allograft and femoral tunnel...
April 6, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28388886/allograft-tendon-reconstruction-of-the-anterior-talofibular-ligament-and-calcaneofibular-ligament-in-the-treatment-of-chronic-ankle-instability
#4
Weikai Wang, Guo Hong Xu
BACKGROUND: The purpose was retrospectively to investigate functional and clinical outcomes after anterior talofibular ligament (ATFL) and calcaneofibular ligament (CFL) reconstruction using a single allograft. METHODS: Patients with severe chronic lateral instability of the ankle underwent surgery after conservative treatment failed. Ultrasounds of the ankle were performed, and if the AFTL and CFL were completely torn without enough soft tissue for repair, the ligaments were reconstructed using allograft tendon...
April 8, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28388231/sex-differences-in-high-school-athletes-knowledge-of-sport-related-concussion-symptoms-and-reporting-behaviors
#5
Jessica Wallace, Tracey Covassin, Erica Beidler
CONTEXT:   Recent researchers have reported that athletes' knowledge of sport-related concussion (SRC) has increased but that athletes still lack knowledge of all the signs and symptoms of SRC. Understanding the signs and symptoms of SRC and the dangers of playing while symptomatic are critical to reporting behaviors in high school athletes. OBJECTIVE:   To examine sex differences in knowledge of SRC symptoms and reasons for not reporting a suspected SRC to an authoritative figure in high school athletes...
April 18, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28383764/risk-factors-for-radiographic-joint-space-narrowing-and-patient-reported-outcomes-of-post-traumatic-osteoarthritis-after-acl-reconstruction-data-from-the-moon-cohort
#6
Morgan H Jones, Kurt P Spindler
The Multicenter Orthopaedic Outcomes Network (MOON) is an NIH-funded prospective, longitudinal cohort of over 3500 patients who have undergone anterior cruciate ligament reconstruction (ACLR) by 14 sports medicine surgeons at 7 academic medical centers. Patient reported outcome questionnaires (PRO's) are completed at baseline and multiple timepoints after surgery, and a nested cohort of patients return for radiographs to assess the development of joint space changes. We review the risk factors for worse patient reported outcomes, the predictors of clinically significant symptoms of post-traumatic osteoarthritis (PTOA), and the factors associated with more radiographic joint space narrowing...
April 6, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28375638/the-placenta-applications-in-orthopaedic-sports-medicine
#7
James Alexander McIntyre, Ian A Jones, Alla Danilkovich, C Thomas Vangsness
BACKGROUND: Placenta has a long history of use for treating burns and wounds. It is a rich source of collagen and other extracellular matrix proteins, tissue reparative growth factors, and stem cells, including mesenchymal stem cells (MSCs). Recent data show its therapeutic potential for orthopaedic sports medicine indications. PURPOSE: To provide orthopaedic surgeons with an anatomic description of the placenta, to characterize its cellular composition, and to review the literature reporting the use of placenta-derived cells and placental tissue allografts for orthopaedic sports medicine indications in animal models and in humans...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28373946/anteromedial-portal-anterior-cruciate-ligament-reconstruction-with-tibialis-anterior-allograft
#8
Steven Shamah, Daniel Kaplan, Eric J Strauss, Brian Singh
In an effort to better restore normal joint function and kinematics, recent emphasis has been placed on surgical techniques that provide a more anatomic reconstruction of the anterior cruciate ligament (ACL). With femoral tunnel placement shown to play a vital role in the biomechanics, stability, and clinical outcomes after ACL reconstruction, approaches that better approximate the ACL's native femoral origin have been adopted. The independent anteromedial portal technique is thought to better position the femoral tunnel within the native ACL footprint and leave the graft more posteroinferior on the wall of the lateral femoral condyle than the more traditional transtibial approach...
February 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28373945/technique-for-arthroscopic-assisted-primary-anterior-cruciate-ligament-reconstruction-using-doubled-tibialis-anterior-tendon
#9
Michael Rose, Dennis Crawford
Advances in surgical technique and our knowledge of anterior cruciate ligament (ACL) anatomy have resulted in a marked increase in options for ACL reconstruction. Currently, patient age and activity level, surgeon preference and experience, and cost are factors influencing the type of reconstruction recommended to address knee instability. We present a simplified transtibial method of ACL reconstruction using a single-bundle, doubled tibialis anterior allograft. This method uses fixation with a suspensory device on the femur and a bio-composite interference screw on the tibia...
February 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28373938/arthroscopic-acromioclavicular-joint-reconstruction-using-knotless-coracoclavicular-fixation-and-soft-tissue-anatomic-coracoclavicular-ligament-reconstruction
#10
Travis J Menge, Dimitri S Tahal, J Christoph Katthagen, Peter J Millett
Acromioclavicular joint injuries are one of the most common shoulder injuries, and there are a variety of treatment options. Recently, there have been newer arthroscopic techniques that have addressed coracoid and clavicle fracture risk by using a knotted suture-button fixation through a single, small bone tunnel with additional looped soft-tissue graft stabilization. Although clinical outcomes have been good to excellent, there have still been instances of knot and hardware irritation. The described technique builds on the latest advances and achieves an anatomic coracoclavicular (CC) reconstruction through a single knotless CC fixation device with additional soft-tissue allograft reconstruction of the CC ligaments...
February 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28370152/long-term-outcome-of-an-intra-articular-allograft-technique-for-treatment-of-spontaneous-cranial-cruciate-ligament-rupture-in-the-dog
#11
Jeffery J Biskup, Daniel G Balogh, Ruth M Scott, Michael G Conzemius
OBJECTIVE: To determine the 12-month outcome in dogs with spontaneous cranial cruciate ligament (CCL) rupture after repair with an intra-articular decellularized allograft. STUDY DESIGN: Prospective pilot case series. ANIMALS: Ten client-owned dogs with unilateral CCL rupture. METHODS: An intra-articular, decellularized, deep digital flexor tendon allograft was secured in the stifle with a femoral cross pin and tibial spiked washers and screws...
March 31, 2017: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/28353048/what-factors-influence-the-biomechanical-properties-of-allograft-tissue-for-acl-reconstruction-a-systematic-review
#12
Drew A Lansdown, Andrew J Riff, Molly Meadows, Adam B Yanke, Bernard R Bach
BACKGROUND: Allograft tissue is used in 22% to 42% of anterior cruciate ligament (ACL) reconstructions. Clinical outcomes have been inconsistent with allograft tissue, with some series reporting no differences in outcomes and others reporting increased risk of failure. There are numerous variations in processing and preparation that may influence the eventual performance of allograft tissue in ACL reconstruction. We sought to perform a systematic review to summarize the factors that affect the biomechanical properties of allograft tissue for use in ACL reconstruction...
March 28, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28350237/hierarchically-structured-electrospun-scaffolds-with-chemically-conjugated-growth-factor-for-ligament-tissue-engineering
#13
Hannah M Pauly, Binulal N Sathy, Dinorath Olvera, Helen O McCarthy, Daniel J Kelly, Ketul C Popat, Nicholas J Dunne, Tammy Lynn Haut Donahue
The anterior cruciate ligament (ACL) of the knee is vital for proper joint function and is commonly ruptured during sports injuries or car accidents. Due to a lack of intrinsic healing capacity and drawbacks with allografts and autografts, there is a need for a tissue-engineered ACL replacement. Our group has previously used aligned sheets of electrospun polycaprolactone nanofibers to develop solid cylindrical bundles of longitudinally aligned nanofibers. We have shown that these nanofiber bundles support cell proliferation and elongation and the hierarchical structure and material properties are similar to the native human ACL...
March 27, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28301224/increased-risk-of-revision-after-anterior-cruciate-ligament-reconstruction-with-soft-tissue-allografts-compared-with-autografts-graft-processing-and-time-make-a-difference
#14
Gregory B Maletis, Jason Chen, Maria C S Inacio, Rebecca M Love, Tadashi T Funahashi
BACKGROUND: The optimal graft for anterior cruciate ligament reconstruction (ACLR) remains controversial. PURPOSE: To compare the risk of aseptic revision between bone-patellar tendon-bone (BPTB) autografts, hamstring autografts, and soft tissue allografts. STUDY DESIGN: Cohort study; Level of evidence, 2. METHODS: Prospectively collected ACLR cases reconstructed with BPTB autografts, hamstring autografts, and soft tissue allografts were identified using the Kaiser Permanente ACLR Registry...
March 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28298067/incidence-of-second-anterior-cruciate-ligament-tears-1990-2000-and-associated-factors-by-geographic-locale
#15
Nathan D Schilaty, Nathaniel A Bates, Thomas L Sanders, Aaron J Krych, Michael J Stuart, Timothy E Hewett
BACKGROUND: Second anterior cruciate ligament (ACL) tears after reconstruction occur at a reported rate of 20% to 30%. This high frequency indicates that there may be factors that predispose an athlete to graft failure and ACL tears of the contralateral knee. PURPOSE: To determine the incidence of second ACL injuries in a geographic population-based cohort over a 10-year observation period. STUDY DESIGN: Descriptive epidemiological study. METHODS: International Classification of Diseases, 9th Revision (ICD-9) codes relevant to the diagnosis of an ACL tear and the procedure code for ACL reconstruction were searched across the Rochester Epidemiology Project, a multidisciplinary county database, between the years of 1990 and 2000...
March 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28298052/allograft-augmentation-of-hamstring-autograft-for-younger-patients-undergoing-anterior-cruciate-ligament-reconstruction
#16
Cale A Jacobs, Jeremy M Burnham, Eric Makhni, Chaitu S Malempati, Eric Swart, Darren L Johnson
BACKGROUND: Younger patients and those with smaller hamstring autograft diameters have been shown to be at significantly greater risk of graft failure after anterior cruciate ligament (ACL) reconstruction. To date, there is no information in the literature about the clinical success and/or cost-effectiveness of increasing graft diameter by augmenting with semitendinosus allograft tissue for younger patients. HYPOTHESIS: Hybrid hamstring grafts are a cost-effective treatment option because of a reduced rate of graft failure...
March 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28295121/outcomes-at-a-minimum-of-2-years-after-medial-collateral-ligament-reconstruction-using-partial-thickness-quadriceps-tendon-bone-autograft
#17
Iftach Hetsroni, Gideon Mann
This study reports outcomes at a minimum of 2 years after a technique using quadriceps tendon-bone autograft for medial collateral ligament reconstruction. This technique effectively restored medial stability in medial collateral ligament-deficient knees. It is particularly valuable when nonirradiated allograft is unavailable or harvesting medial knee restraints (semitendinosus) for medial collateral ligament reconstruction is to be avoided. [Orthopedics. 201x; xx(x):xx-xx.].
March 14, 2017: Orthopedics
https://www.readbyqxmd.com/read/28277740/increased-risk-of-revision-after-anterior-cruciate-ligament-reconstruction-with-bone-patellar-tendon-bone-allografts-compared-with-autografts
#18
Gregory B Maletis, Jason Chen, Maria C S Inacio, Rebecca M Love, Tadashi T Funahashi
BACKGROUND: The use of allograft tissue for anterior cruciate ligament reconstruction (ACLR) remains controversial. PURPOSE: To compare the risk of aseptic revision between bone-patellar tendon-bone (BPTB) autografts and BPTB allografts. STUDY DESIGN: Cohort study; Level of evidence, 2. METHODS: A retrospective cohort study of prospectively collected data was conducted using the Kaiser Permanente ACLR Registry. A cohort of patients who underwent primary unilateral ACLR with BPTB autografts and BPTB allografts was identified...
March 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28275205/a-comparative-study-of-effect-of-autograft-versus-allograft-anterior-cruciate-ligament-reconstruction-onexpressions-ofloxsand-mmps
#19
Wei-Ming Wang, Xiao-Jun Ma, Shi-Bo Huang, Liu-Bao Ren, Yu-Peng Liu
This study aimed to compare the effect of autograft or allograft anterior cruciate ligament (ACL) reconstruction on the expressions of LOXs and MMPs in a New Zealand white rabbit model. New Zealand white rabbits were divided randomly into control, sham, autograft and allograft groups At the 4th and 8th week after operation, biomechanical testing was performed to measure the primary length, cross-sectional area, maximum tensile load and stiffness of ACL, and HE staining was used to observe cell morphology and fibre alignment of ACL...
March 8, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/28272928/prospective-clinical-and-radiographic-outcomes-after-concomitant-anterior-cruciate-ligament-reconstruction-and-meniscal-allograft-transplantation-at-a-mean-5-year-follow-up
#20
Bryan M Saltzman, Maximilian A Meyer, Alexander E Weber, Sarah G Poland, Adam B Yanke, Brian J Cole
BACKGROUND: Concomitant anterior cruciate ligament reconstruction and meniscal allograft transplantation (ACLR/MAT) has demonstrated short-term success in small, retrospective cohort studies. Patient- and disease-specific predictors of success after ACLR/MAT are largely unknown. PURPOSE: To (1) prospectively evaluate the subjective and objective clinical and radiographic outcomes after ACLR/MAT and (2) conduct a subgroup analysis to identify patient- or disease-related factors that correlate with failure...
March 2017: American Journal of Sports Medicine
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