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https://www.readbyqxmd.com/read/29352685/factors-associated-with-posterior-cruciate-ligament-tightness-during-cruciate-retaining-total-knee-arthroplasty
#1
Kazuhisa Hatayama, Masanori Terauchi, Shogo Hashimoto, Kenichi Saito, Hiroshi Higuchi
BACKGROUND: The purpose of our study was to identify factors affecting posterior cruciate ligament (PCL) tightness during cruciate-retaining total knee arthroplasty. METHODS: A total of 225 varus osteoarthritic knees that underwent cruciate-retaining total knee arthroplasty were included in this study. When the flexion gap was tighter than the extension gap after all bone resection and the lift-off sign was positive during surgery, the PCL was released. The association between PCL release and potential risk factors, such as age, gender, body mass index, preoperative range of motion, anterior cruciate ligament status, preoperative hip-knee-ankle angle (HKA), decrease in posterior condylar offset, and also change in tibial posterior slope angle (TPSA) from preoperative to postoperative measurement, was evaluated by univariate and multivariate logistic regression analyses...
December 28, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29351558/analysis-of-500-anterior-cruciate-ligament-reconstructions-from-a-private-institutional-register
#2
Lauro Augusto Costa, Noel Oizerovici Foni, Eliane Antonioli, Rogério Teixeira de Carvalho, Isabela Dias Paião, Mário Lenza, Mário Ferretti
PURPOSE: The aims of this study are to describe the epidemiological characteristics of anterior cruciate ligament reconstructions in a private hospital in Brazil and to determine trends in medical practice for comparison with previous studies. METHODS: We retrospectively reviewed the anterior cruciate ligament institutional register to obtain data from all patients who underwent primary anterior cruciate ligament reconstruction from July 2014 to June 2016. Descriptive statistics were used to summarize the sample...
2018: PloS One
https://www.readbyqxmd.com/read/29350649/magnetic-resonance-imaging-in-degenerative-disease-of-the-lumbar-spine-fat-saturation-technique-and-contrast-medium
#3
Paola D'Aprile, Michelangelo Nasuto, Alfredo Tarantino, Giuseppe Guglielmi, J Randy Jinkins
PURPOSE: To examine both anterior and posterior elements of the lumbar spine in patients with low back pain using MRI T2-weighted sequences with Fat Saturation (FS) and contrast enhanced T1-weighted sequences with FS. MATERIALS AND METHODS: Two thousand eight hundred and twenty (2820) patients (1628 male, 1192 female, mean age 54) presenting low back pain underwent MRI standard examination (Sagittal T1w TSE and T2w TSE, axial T1 SE) with the addition of sagittal and axial T2w Fat Sat (FS) sequences...
January 19, 2018: Acta Bio-medica: Atenei Parmensis
https://www.readbyqxmd.com/read/29350554/quadriceps-neuromuscular-function-and-jump-landing-sagittal-plane-knee-biomechanics-after-anterior-cruciate-ligament-reconstruction
#4
Sarah H Ward, Troy Blackburn, Darin A Padua, Laura E Stanley, Matthew S Harkey, Brittney A Luc-Harkey, Brian G Pietrosimone
CONTEXT:   Aberrant biomechanics may affect force attenuation at the knee during dynamic activities, potentially increasing the risk of sustaining a knee injury or hastening the development of osteoarthritis after anterior cruciate ligament reconstruction (ACLR). Impaired quadriceps neuromuscular function has been hypothesized to influence the development of aberrant biomechanics. OBJECTIVE:   To determine the association between quadriceps neuromuscular function (strength, voluntary activation, and spinal-reflex and corticomotor excitability) and sagittal-plane knee biomechanics during jump landings in individuals with ACLR...
January 19, 2018: Journal of Athletic Training
https://www.readbyqxmd.com/read/29350551/hip-and-knee-kinematics-and-kinetics-during-landing-tasks-after-anterior-cruciate-ligament-reconstruction-a-systematic-review-and-meta-analysis
#5
Adam S Lepley, Christopher M Kuenze
OBJECTIVE:   To evaluate the current evidence concerning kinematic and kinetic strategies adopted during dynamic landing tasks by patients with anterior cruciate ligament reconstruction (ACLR). DATA SOURCES:   PubMed, Web of Science. STUDY SELECTION:   Original research articles that evaluated kinematics or kinetics (or both) during a landing task in those with a history of ACLR were included. DATA EXTRACTION:   Methodologic quality was assessed using the modified Downs and Black checklist...
January 19, 2018: Journal of Athletic Training
https://www.readbyqxmd.com/read/29350088/the-use-of-synthetic-ligaments-in-the-design-of-an-enhanced-stability-total-knee-joint-replacement
#6
Michael D Stokes, Brendan C Greene, Luke W Pietrykowski, Taylor M Gambon, Caroline E Bales, John D DesJardins
Current total knee replacement designs work to address clinically desired knee stability and range of motion through a balance of retained anatomy and added implant geometry. However, simplified implant geometries such as bearing surfaces, posts, and cams are often used to replace complex ligamentous constraints that are sacrificed during most total knee replacement procedures. This article evaluates a novel total knee replacement design that incorporates synthetic ligaments to enhance the stability of the total knee replacement system...
January 1, 2018: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/29350081/assessment-of-the-anterolateral-ligament-of-the-knee-by-1-5-t-magnetic-resonance-imaging
#7
Volkan Kızılgöz, Ali Kemal Sivrioğlu, Hasan Aydın, Türkhun Çetin, Gökhan Ragıp Ulusoy
Objective This study was performed to evaluate the visibility of the knee's anterolateral ligament (ALL) by magnetic resonance (MR) imaging when evaluating injuries of the ALL in relation to injuries of the anterior cruciate ligament (ACL). Methods Two reviewers retrospectively analyzed MR images for the visibility and dimensions of the ALL and the relationship between ALL and ACL injuries. The intraclass correlation coefficient (ICC) and kappa analysis were used to assess interobserver reliability. The chi-square test was used to assess the relationship between ALL and ACL injuries...
January 1, 2018: Journal of International Medical Research
https://www.readbyqxmd.com/read/29349995/-progress-on-graft-and-fixation-options-of-arthroscopic-anterior-cruciate-ligament-reconstruction
#8
REVIEW
Han Chang, Xiang-Yu Tang, Feng Qu, Xue-Zhen Shen, Jiang-Tao Wang, Chun-Bao Li, Wei Qi, Yu-Jie Liu
Anterior cruciate ligament injury is one of the most common injuries of knee joint. Arthroscopic reconstruction of anterior cruciate ligament is the most commonly performed procedure. A variety type of fixation techniques are being used nowadays, such as interference screw, cortical suspension fixation and transfix, all of which can achieve good effect, with both advantages and disadvantages. However, the healing of reconstructed grafts is a complicated and long-term process, which can be affected by many factors...
April 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29349024/the-crossing-internal-suture-augmentation-technique-to-protect-the-all-inside-anterior-cruciate-ligament-reconstruction-graft
#9
Mohamed Aboalata, Ashraf Elazab, Abdelsamie Halawa, Moheib S Ahmed, Andreas B Imhoff, Yehia Bassiouny
The crossing internal suture augmentation technique is an all-inside technique of anterior cruciate ligament reconstruction with augmentation of the hamstring tendon autograft with a braided ultrahigh-molecular-weight polyester-polyethylene suture tape resting on the adjustable cortical buttons on both the femoral and tibial sides. The internal suture augmentation acts as a backbone supporting and protecting the graft until the process of healing and ligamentization of the graft is completed. The ends of the suture tape are tied on the tibial button and additionally fixed to the tibia with a knotless anchor as a backup fixation with the knee in full extension...
December 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29349022/arthroscopic-delivery-of-injectable-bone-graft-for-staged-revision-anterior-cruciate-ligament-reconstruction
#10
Kent T Yamaguchi, Gina M Mosich, Kristofer J Jones
Bone defects caused by femoral and tibial tunnel enlargement can pose a significant technical challenge when planning to perform revision anterior cruciate ligament reconstruction. A number of options have been described for managing osseous deficiencies, including the use of large autograft or allograft bone dowels to provide sufficient tunnel fill and subsequent structural support for revision surgery. These techniques can be time-consuming and technically demanding to ensure proper tunnel fill and press-fit stability of the bone graft...
December 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29349016/the-external-rotation-radiographic-technique-for-posterolateral-injury
#11
João Luiz Ellera Gomes, Matheus Rocha de Aguiar, Luiza Barbosa Horta Barbosa, Nicholas I Kennedy, Márcio B Ferrari
Posterolateral corner injuries are a severe and often unrecognized pathology. Injuries to these structures are difficult to identify using magnetic resonance images. Physical examination tests including the dial test, frog-leg test, and varus stress test can be difficult to perform. In addition it is difficult to correctly evaluate the results in a multiligament injury setting. The correct diagnosis of this pathology is essential to determine the proper treatment and improve outcomes. Furthermore, failure to recognize this pathology is associated with a high risk of failure following isolated anterior cruciate ligament reconstructions...
December 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29349014/graft-preparation-technique-to-optimize-hamstring-graft-diameter-for-anterior-cruciate-ligament-reconstruction
#12
Brett Fritsch, Francisco Figueroa, Bertrand Semay
Hamstring autografts are frequently used for anterior cruciate ligament reconstruction. The inherent variability in graft diameter has been stated as a disadvantage in its use because the presence of smaller graft diameters has been correlated with increased risk of re-rupture. Several techniques have been described to address this concern. Modifications of the basic Graftlink technique allows for increased control over final graft diameter using a standard harvest of the semitendinosus tendon with or without the gracilis tendon, and results in a graft of adequate length and diameter in all patients with rigid cortical fixation on the femur and tibia...
December 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29349013/open-wedge-valgus-high-tibial-osteotomy-technique-with-inverted-l-shaped-configuration
#13
Juan C Monllau, Juan I Erquicia, Federico Ibañez, Maximiliano Ibañez, Pablo E Gelber, Angel Masferrer-Pino, Xavier Pelfort
High tibial osteotomy (HTO) is a useful alternative in the treatment of symptomatic varus malalignment. However, among its drawbacks is the tendency to decrease patellar height and increase the posterior tibial slope. The increased tibial slope increases anterior cruciate ligament tension and may compromise its function. On the other hand, patella baja often causes anterior knee pain and, over time, may favor degeneration of the patellofemoral joint. The aim of this study is to describe a technical modification of the standard open-wedge HTO...
December 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29349011/middle-glenohumeral-ligament-abrasion-causing-upper-subscapularis-tear
#14
Paul C Brady, Heather Grubbs, Alexandre Lädermann, Christopher R Adams
The middle glenohumeral ligament (MGHL) typically contributes partially to the anterior stability of the shoulder. In a very limited number of cases, the MGHL can cause abrasion on the upper edge of the subscapularis causing persistent pain symptoms for patients. The condition is exacerbated by internal rotation of the arm. In this Technical Note, we describe this entity and call it the SAM lesion (Subscapularis Abrasion from the MGHL). We present a technique of addressing this lesion.
December 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29349007/anterior-cruciate-ligament-primary-repair-with-independent-tensioning-of-the-anteromedial-and-posterolateral-bundles
#15
Patrick A Smith, Jordan A Bley
This procedure represents an update on traditional primary repair methods by taking advantage of technological advancements to optimize soft tissue fixation and allow for an anatomic double-bundle primary repair with independent bundle tensioning and an internal brace construct to restore normal anterior cruciate ligament biomechanics.
December 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29349000/hamstring-graft-preparation-techniques-for-anterior-cruciate-ligament-reconstruction
#16
Gustavo Vinagre, Nicholas I Kennedy, Jorge Chahla, Mark E Cinque, Zaamin B Hussain, Morten L Olesen, Robert F LaPrade
Anterior cruciate ligament reconstruction is one of the most commonly performed procedures in orthopaedics, with more than 125,000 performed in the United States per year. There are several reconstruction graft choices that can be used to reconstruct the native anterior cruciate ligament, with autograft hamstring tendons being one of the most commonly used. Preparation of a hamstring autograft varies depending on patient characteristics and physician preference. The purpose of this Technical Note is to describe in detail different variants of hamstring graft preparation techniques that are commonly used in practice...
December 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29346717/anterior-cruciate-ligament-tear-induces-a-sustained-loss-of-muscle-fiber-force-production
#17
Jonathan P Gumucio, Kristoffer B Sugg, Elizabeth R Sibilsky Enselman, Alexis C Konja, Logan R Eckhardt, Asheesh Bedi, Christopher L Mendias
INTRODUCTION: Patients with anterior cruciate ligament (ACL) tears have persistent quadriceps strength deficits that are thought to be due to altered neurophysiological function. Our goal was to determine the changes in muscle fiber contractility independent of the ability of motor neurons to activate fibers. METHODS: We obtained quadriceps biopsies of patients undergoing ACL reconstruction, and additional biopsies one, two, and six months after surgery. Muscles fiber contractility was assessed in vitro, along with whole muscle strength testing...
January 18, 2018: Muscle & Nerve
https://www.readbyqxmd.com/read/29346049/microphthalmia-corneal-dermoids-and-congenital-anomalies-resembling-goldenhar-syndrome-in-a-cat
#18
William Berkowski, Ingeborg Langohr, Anthony Pease, Joshua Bartoe
CASE DESCRIPTION An 18-month-old spayed female domestic shorthair cat was evaluated because of conjunctivitis and skin-fold dermatitis secondary to bilateral microphthalmia, corneal dermoids, and ankyloblepharon. CLINICAL FINDINGS Physical examination revealed bilateral microphthalmia, bilaterally symmetrical corneal dermoids, ankyloblepharon, superior and inferior entropion, prognathism, and facial asymmetry with deviation of the nasal septum. Computed tomography revealed malformed, thickened bony orbits with mineralization of the orbital ligament bilaterally...
February 1, 2018: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/29340993/laparoscopic-assisted-modified-intersphincter-resection-for-ultralow-rectal-cancer
#19
Haiyang Zhou, Canping Ruan, Zhiguo Wang, Zhiqian Hu
BACKGROUND: Intersphincter resection (ISR) is considered to be a superior technique offering sphincter preservation in patients with ultralow rectal cancer.1 Because high-definition laparoscopy offers wider and clearer vision into the narrow pelvic cavity and intersphincteric space, ISR has been further refined.2 However, functional outcome after ISR has not been optimal. More than half of patients receiving ISR suffer partial or even complete anal incontinence.3 We therefore propose a laparoscopic-assisted modified ISR, with the aim of improving sphincter function following ISR...
January 16, 2018: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/29340747/the-role-of-muscle-function-after-anterior-cruciate-ligament-rupture-and-treatment
#20
EDITORIAL
Roland Becker, Jon Karlsson
No abstract text is available yet for this article.
January 16, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
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