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(Anterior cruciate ligament) AND Mri

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https://www.readbyqxmd.com/read/29145963/functional-results-and-isokinetic-muscle-strength-in-patients-with-fraser-type-i-floating-knee-treated-with-internal-fixation
#1
Fernando Brandao Andrade-Silva, Adriana Carvalho, Caio Mansano, Aline Giese, Marcos de Camargo Leonhardt, Dennis Barbosa, Kodi Edson Kojima, Jorge Santos Silva
INTRODUCTION: According to Fraser's description, ipsilateral femoral and tibial diaphyseal fractures are characterised as type I floating knee and have a better prognosis than fractures with joint involvement (type II). There are few reports of functional and muscle strength in these patients. The objective of this study was to evaluate the functional and isokinetic muscle strength of patients with type I floating knee undergoing femoral and tibial internal fixation. METHODS: Patients with type I floating knee undergoing concomitant femoral and tibial internal fixation were invited for clinical evaluation...
October 2017: Injury
https://www.readbyqxmd.com/read/29140170/clinical-diagnostic-tests-versus-mri-diagnosis-of-acl-tears
#2
Megan P Brady, Windee Weiss
CLINICAL SCENARIO: A common injury among elite, recreational, and youth athletes is the anterior cruciate ligament (ACL) tear.(1) Approximately 200,000 ACL injuries occur every year.(2) The gold standard in ACL injury evaluation is diagnostic arthroscopy,(3,4) however the diagnostic accuracy of clinical diagnostic tests and magnetic resonance imaging (MRI) is debatable.(1,3-6) Due to the frequency of knee injury,(3) MRI is a common diagnostic tool used for imaging and diagnosis(5). ACL tears are also diagnosed using clinical diagnostic tests...
November 15, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/29137565/mri-evaluation-of-the-acl-remnant-tissue-in-acl-deficient-knee
#3
Tsuneari Takahashi, Masashi Kimura, Katsushi Takeshita
PURPOSE: To clarify the relationship between anterior cruciate ligament (ACL) remnant tissue at the time of surgery and preoperative evaluation of ACL-injured knee. METHODS: A total of 123 patients were enrolled and classified into four groups based on the classification of ACL remnant tissue. To quantify the signal-noise quotient (SNQ), five regions of interest (ROIs), such as tibial, mid, femoral ACL remnant, tendon of quadriceps femoris to normalize the signal intensity of ACL remnant tissue, and background measurements, were measured...
September 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/29125920/frontal-plane-knee-mechanics-and-early-cartilage-degeneration-in-people-with-anterior-cruciate-ligament-reconstruction-a-longitudinal-study
#4
Deepak Kumar, Favian Su, Daniel Wu, Valentina Pedoia, Lauren Heitkamp, C Benjamin Ma, Richard B Souza, Xiaojuan Li
BACKGROUND: Abnormal frontal plane gait mechanics are known risk factors for knee osteoarthritis, but their role in early cartilage degeneration after anterior cruciate ligament reconstruction (ACLR) is not well understood. Hypothesis/Purpose: The objective was to evaluate the association of frontal plane gait mechanics with medial knee cartilage magnetic resonance (MR) relaxation times over 1 year in patients with ACLR and controls. It was hypothesized that (1) there will be an increase in frontal plane medial knee loading and medial knee MR relaxation times over time in the patients with ACLR, and (2) increases in frontal plane medial knee loading will be associated with an increase in medial knee MR relaxation times...
November 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29125074/-a-soccer-player-with-an-unstable-knee
#5
D Janssen, B Koc, E Jansen
A 19-year-old soccer player presented with instability of his left knee after a rotation trauma. Congenital absence of the anterior cruciate ligament was suspected because of leg length discrepancy and specific MRI findings. He regained stability after an anterior cruciate reconstruction.
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/29125013/diagnostic-value-of-combined-serum-marker-changes-and-quantitative-mri-evaluation-of-cartilage-volume-of-tibial-plateau-in-a-surgically-induced-osteoarthritis-dog-model
#6
Jiangdong Ren, Jinsai Ma, Xiaogang Zhang, Abdusami Aimaiti, Maimaitiming Saiyiti, Yuming Chen, Li Cao
Objective To evaluate the combined diagnostic value of two serum osteoarthritis (OA) markers and quantitative magnetic resonance imaging (MRI) evaluation of the cartilage volume of the tibial plateau in a canine model of experimental OA. Methods A total of 18 male Beagle dogs were used in this longitudinal study. OA was surgically induced via anterior cruciate ligament transection (ACLT) of the right knee in 10 dogs. The remaining eight dogs formed the sham operation control group and underwent the same procedure without ACLT...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/29114629/knee-osteoarthritis-after-reconstruction-of-isolated-anterior-cruciate-ligament-injuries-a-systematic-literature-review
#7
REVIEW
Compagnoni Riccardo, Catani Fabio, Randelli Pietro
Purpose  The aim of this review was to analyze the current literature on osteoarthritic evolution of knees without any combined meniscal or ligament lesions undergoing anterior cruciate ligament (ACL) reconstruction. Methods  A PubMed/MEDLINE research was performed using the following keywords: "Anterior Cruciate Ligament Reconstruction" [Mesh] AND "Osteoarthritis, Knee" [Mesh]. Only English language literature and articles published after 2005 were included. Studies including concomitant meniscal tears, posterior cruciate or collateral ligament injuries, previous surgery in the affected knees, infections, osteochondral defects, loose bodies, synovial plica syndrome, and posteromedial or posterolateral corner injuries were not considered in this review...
March 2017: Joints
https://www.readbyqxmd.com/read/29095400/mri-arthroscopy-correlations-ligaments-of-the-knee
#8
Joseph J Ruzbarsky, Gabrielle Konin, Naaman Mehta, Robert G Marx
Magnetic resonance imaging and a thorough understanding of its interpretation in the diagnosis and management of injuries to the ligaments about the knee is an essential skill for orthopedists. The goal of this review is to provide a description of the native and injured anatomy through magnetic resonance imaging and its correlations, when appropriate, as seen through the arthroscope at the time of surgery. The ligaments of focus include the anterior cruciate ligament, the posterior cruciate ligament, the medial collateral ligament, the posterolateral corner, the anterolateral ligament, and the medial patellofemoral ligament...
December 2017: Sports Medicine and Arthroscopy Review
https://www.readbyqxmd.com/read/29065271/hamstring-graft-incorporation-according-to-the-length-of-the-graft-inside-tunnels
#9
Etienne Cavaignac, Vincent Marot, Marie Faruch, Nicolas Reina, Jérôme Murgier, Franck Accadbled, Emilie Berard, Philippe Chiron
BACKGROUND: Anterior cruciate ligament (ACL) reconstruction with a quadrupled semitendinosus (ST4) graft is an evolution of the standard technique with 2 hamstring tendons (semitendinosus + gracilis [STG]). However, there is no published comparison of how well these 2 types of hamstring grafts are incorporated into the bone tunnels. Because the ST4 graft is shorter, there is less graft material inside the tunnels. PURPOSE: To use magnetic resonance imaging (MRI) to compare graft incorporation in the tibial bone tunnels 1 year after ACL reconstruction with either an STG graft or ST4 graft...
October 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29059112/the-posteromedial-corner-of-the-knee-anatomy-pathology-and-management-strategies
#10
Andrew P Dold, Stephanie Swensen, Eric Strauss, Michael Alaia
The posteromedial corner of the knee encompasses five medial structures posterior to the medial collateral ligament. With modern MRI systems, these structures are readily identified and can be appreciated in the context of multiligamentous knee injuries. It is recognized that anteromedial rotatory instability results from an injury that involves both the medial collateral ligament and the posterior oblique ligament. Like posterolateral corner injuries, untreated or concurrent posteromedial corner injuries resulting in rotatory instability place additional strain on anterior and posterior cruciate ligament reconstructions, which can ultimately contribute to graft failure and poor clinical outcomes...
November 2017: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/29051898/accuracy-of-the-lever-sign-test-in-the-diagnosis-of-anterior-cruciate-ligament-injuries
#11
Keith A Jarbo, David E Hartigan, Kelly L Scott, Karan A Patel, Anikar Chhabra
BACKGROUND: The lever sign test is a new physical examination tool to diagnose anterior cruciate ligament (ACL) tears. Preliminary results suggest almost 100% sensitivity and specificity to diagnose acute and chronic complete ACL tears and clinically significant partial tears as compared with magnetic resonance imaging (MRI). PURPOSE: To assess the sensitivity and specificity of the lever sign test for the diagnosis of acute ACL injuries, as compared to MRI. We also aimed to determine the accuracy of the lever sign test compared with 3 other tests (anterior drawer, Lachman, and pivot shift) when performed by providers of various training levels, and with the patient awake or under anesthesia...
October 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29051869/case-of-acute-concomitant-rupture-of-anterior-cruciate-ligament-and-patellar-tendon-of-knee-surgical-decision-making-and-outcome
#12
Jithin Orville Lobo, Joe Joseph Cherian, Arnav Sahu
INTRODUCTION: Acute concomitant rupture of both anterior cruciate ligament (ACL) and patellar tendon is a rare injury. The diagnosis of either of the injuries may be missed on clinical examination in the emergency room. A high index of suspicion is necessary when active extension is absent, and necessary investigations like ultrasound or magnetic resonance imaging (MRI) should be done to confirm the diagnosis. There are no fixed treatment protocols in these injuries. The options include immediate repair of patellar tendon with either simultaneous or delayed reconstruction of ACL...
May 2017: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/29028358/posterior-tibial-translation-measurements-on-magnetic-resonance-imaging-improve-diagnostic-sensitivity-for-chronic-posterior-cruciate-ligament-injuries-and-graft-tears
#13
Nicholas N DePhillipo, Mark E Cinque, Jonathan A Godin, Gilbert Moatshe, Jorge Chahla, Robert F LaPrade
BACKGROUND: Magnetic resonance imaging (MRI) of the knee is a highly sensitive and specific method for diagnosing acute posterior cruciate ligament (PCL) tears, with a reported accuracy of 96% to 100%. In chronic and revision settings, these injuries may be missed on MRI because of the apparent continuity of nonfunctional PCL fibers. Posterior tibial translation (PTT) of the medial compartment has been identified as a potential secondary finding of PCL tear on routine MRI. Purpose/Hypothesis: The purpose of this study was to evaluate the sensitivity of PTT on MRI associated with PCL injuries and compare it with the sensitivity of a radiologist's MRI interpretation with preoperative posterior knee stress radiographs as the gold standard...
October 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29026421/comparison-of-patellar-versus-hamstring-tendon-autografts-in-arthroscopic-anterior-cruciate-ligament-reconstruction-a-6-month-follow-up-of-a-randomized-clinical-trial
#14
Alireza Sadeghpour, Adel Ebrahimpour, Bahamin Attar, Zahra Azizian
BACKGROUND: The purpose of this study was to compare the outcomes of anterior cruciate ligament (ACL) reconstruction using the patellar versus hamstring tendon (HT) autograft. MATERIALS AND METHODS: In this randomized clinical trial, fifty patients undergoing arthroscopic ACL reconstruction were randomized into two equal groups: Those treated with either autogenous patellar tendon grafts (PT group) or HT group grafts. All patients were reviewed immediately after surgery, at 6 and 12 weeks after surgery, and then at 6 months using the International Knee Documentation Committee evaluation form...
2017: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/28989265/technical-considerations-in-revision-anterior-cruciate-ligament-acl-reconstruction-for-operative-techniques-in-orthopaedics
#15
Jeremy M Burnham, Elmar Herbst, Thierry Pauyo, Thomas Pfeiffer, Darren L Johnson, Freddie H Fu, Volker Musahl
As the incidence of anterior cruciate ligament (ACL) reconstruction continues to increase, the rate of revision surgery continues to climb. Revision surgery has inherent challenges that must be addressed in order to achieve successful results. The cause of the primary ACL reconstruction failure should be determined, and careful preoperative planning should be performed to address the cause(s) of failure. Each patient undergoing revision surgery should undergo a thorough history and physical examination, receive full length alignment radiographs, lateral radiographs, 45-degree flexion weight-bearing postero-anterior radiographs, and patellofemoral radiographs...
March 2017: Operative Techniques in Orthopaedics
https://www.readbyqxmd.com/read/28972789/a-prospective-evaluation-of-femoral-tunnel-placement-for-anatomic-anterior-cruciate-ligament-reconstruction-using-3-dimensional-magnetic-resonance-imaging
#16
Adam Hart, Thiru Sivakumaran, Mark Burman, Tom Powell, Paul A Martineau
BACKGROUND: The recent emphasis on anatomic reconstruction of the anterior cruciate ligament (ACL) is well supported by clinical and biomechanical research. Unfortunately, the location of the native femoral footprint can be difficult to see at the time of surgery, and the accuracy of current techniques to perform anatomic reconstruction is unclear. PURPOSE: To use 3-dimensional magnetic resonance imaging (3D MRI) to prospectively evaluate patients with torn ACLs before and after reconstruction and thereby assess the accuracy of graft position on the femoral condyle...
October 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28965142/improvement-in-the-medial-meniscus-posterior-shift-following-anterior-cruciate-ligament-reconstruction
#17
Hiroto Inoue, Takayuki Furumatsu, Shinichi Miyazawa, Masataka Fujii, Yuya Kodama, Toshifumi Ozaki
PURPOSE: Anterior cruciate ligament (ACL) reconstruction can reduce the risk of developing osteoarthritic knees. The goals of ACL reconstruction are to restore knee stability and reduce post-traumatic meniscal tears and cartilage degradation. A chronic ACL insufficiency frequently results in medial meniscus (MM) injury at the posterior segment. How ACL reconstruction can reduce the deformation of the MM posterior segment remains unclear. In this study, we evaluated the form of the MM posterior segment and anterior tibial translation before and after ACL reconstruction using open magnetic resonance imaging (MRI)...
September 30, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28952547/automated-measurement-of-patient-specific-tibial-slopes-from-mri
#18
Amirhesam Amerinatanzi, Rodney K Summers, Kaveh Ahmadi, Vijay K Goel, Timothy E Hewett, Edward Nyman
BACKGROUND: Multi-planar proximal tibial slopes may be associated with increased likelihood of osteoarthritis and anterior cruciate ligament injury, due in part to their role in checking the anterior-posterior stability of the knee. Established methods suffer repeatability limitations and lack computational efficiency for intuitive clinical adoption. The aims of this study were to develop a novel automated approach and to compare the repeatability and computational efficiency of the approach against previously established methods...
August 8, 2017: Bioengineering
https://www.readbyqxmd.com/read/28950384/diagnostic-accuracy-of-an-mri-protocol-of-the-knee-accelerated-through-parallel-imaging-in-correlation-to-arthroscopy
#19
Johannes Walter Schnaiter, Frank Roemer, Axel McKenna-Kuettner, Hans-Joachim Patzak, Matthias Stefan May, Rolf Janka, Michael Uder, Wolfgang Wuest
Purpose Parallel imaging allows for a considerable shortening of examination times. Limited data is available about the diagnostic accuracy of an accelerated knee MRI protocol based on parallel imaging evaluating all knee joint compartments in a large patient population compared to arthroscopy. Materials and Methods 162 consecutive patients with a knee MRI (1.5 T, Siemens Aera) and arthroscopy were included. The total MRI scan time was less than 9 minutes. Meniscus and cartilage injuries, cruciate ligament lesions, loose joint bodies and medial patellar plicae were evaluated...
September 26, 2017: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
https://www.readbyqxmd.com/read/28933331/-comparison-of-the-arthroscopic-finding-in-the-knee-joint-and-the-mri-retrospective-study
#20
K Šimeček, P Látal, J Duda, M Šimeček
PURPOSE OF THE STUDY Our retrospective study presents the comparison of the preoperative magnetic resonance imaging of the knee joint - MRI - and the arthroscopic finding - ASC. Its aim is to find out how a positive or a negative finding of MRI corresponds with the operative finding and how much the experience of radiologist contributes to the conformity. MATERIAL AND METHODS The MRI findings of knee joints treated surgically at two departments in 2013 and 2014 were assessed. The MRI was performed in a total of 470 patients who subsequently underwent an arthroscopic surgery...
2017: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
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