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https://www.readbyqxmd.com/read/29691616/lars-synthetic-ligaments-for-the-acute-management-of-111-acute-knee-dislocations-effective-surgical-treatment-for-most-ligaments
#1
Pierre Ranger, Andréa Senay, Geneviève Rochette Gratton, Marc Lacelle, Josée Delisle
PURPOSE: The purpose of this study was to describe the longitudinal outcomes of acute repair and augmentation for the reconstruction of dislocated knees, using LARS synthetic ligaments. METHODS: Patients with a knee dislocation surgically treated using LARS synthetic ligament augmentation, with a minimum follow-up of 24 months, were enrolled between 1996 and 2014. Range of motion, Lachman, pivot shift, posterior drawer, step off sign, valgus, varus, KT-1000 arthrometer, Telos technique, IKDC, Lysholm, Tegner, and Meyers scores were obtained every 2 years up to 10 years...
April 24, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29688749/surgical-treatment-with-closing-wedge-distal-femoral-osteotomy-for-recurrent-patellar-dislocation-with-genu-valgum
#2
Kyung Wook Nha, Yoonwon Ha, Seungmin Oh, Vivek P Nikumbha, Sae Kwang Kwon, Woo-Jin Shin, Byung Hoon Lee, Keun Bae Hong
BACKGROUND: Closing-wedge distal femoral osteotomy (CWDFO)-combined with medial reefing and lateral release, if necessary- has been used to treat recurrent patellar dislocation (RPD) with genu valgum. PURPOSE: To evaluate the clinical and radiologic outcomes of surgical treatment with CWDFO for treatment of RPD with genu valgum. STUDY DESIGN: Case series; Level of evidence, 4. METHODS: Fourteen consecutive patients (23 knees) with RPD and genu valgum were treated with CWDFO...
April 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29682681/patellar-instability-in-the-skeletally-immature
#3
REVIEW
Charles A Popkin, Ahmad F Bayomy, Evan P Trupia, Charles M Chan, Lauren H Redler
PURPOSE OF REVIEW: This review will focus on the evaluation and management of patellar instability in the developing patient. RECENT FINDINGS: A large number of surgical techniques have been described to prevent recurrent patellofemoral instability in the pediatric population, including both proximal and distal realignment procedures. The wide variety of treatment options highlights the lack of agreement as to the best surgical approach. However, when a comprehensive exam and workup are paired with a surgical plan to address each of the identified abnormalities, outcomes are predictably good...
April 23, 2018: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/29671944/review-article-isolated-proximal-tibiofibular-joint-dislocation
#4
REVIEW
Neil J Cunningham, Nicholas Farebrother, Jake Miles
Proximal tibiofibular joint (PTFJ) dislocations are relatively rare injuries and this paper provides an up-to-date review and practical management approach for the assessment and management of these cases. Isolated PTFJ dislocations are a rare injury, accounting for less than 1% of all knee injuries. Thus, there does not appear to be a clear consensus on definitive management and post-reduction care in the literature. This paper provides a review of the literature, anatomical analysis of the PTFJ in the dislocated state, and a technique for reduction...
April 19, 2018: Emergency Medicine Australasia: EMA
https://www.readbyqxmd.com/read/29662767/reconstruction-of-the-lateral-tibia-plateau-fracture-with-a-third-triangular-support-screw-a-biomechanical-study
#5
Eduardo Moran, Ivan Zderic, Kajetan Klos, Paul Simons, Miguel Triana, R Geoff Richards, Boyko Gueorguiev, Mark Lenz
Background: Split fractures of the lateral tibia plateau in young patients with good bone quality are commonly treated using two minimally invasive percutaneous lag screws, followed by unloading of the knee joint. Improved stability could be achieved with the use of a third screw inserted either in the jail-technique fashion or with a triangular support screw configuration. The aim of this study was to investigate under cyclic loading the compliance and endurance of the triangular support fixation in comparison with the standard two lag-screw fixation and the jail technique...
October 2017: Journal of Orthopaedic Translation
https://www.readbyqxmd.com/read/29653442/examination-under-anesthesia-in-patients-with-recurrent-patellar-dislocation-prognostic-study
#6
Ismail Fathalla, James Holton, Tanweer Ashraf
Surgical management of patellar instability is a matter of wide debate. While some authors believe that isolated medial patellofemoral ligament (MPFL) reconstruction is sufficient, others advocate procedures to treat the underlying pathology, namely, patella alta and trochlear dysplasia. Radiological studies have been traditionally used as a determinant of these pathologies and to determine the need for an additional procedure. The value of examination under anesthesia (EUA) in formulating a treatment plan remains unknown...
April 13, 2018: Journal of Knee Surgery
https://www.readbyqxmd.com/read/29644317/a-rare-case-of-hoffa-fracture-combined-with-lateral-patellar-dislocation
#7
Martin C Jordan, Leonie A Bittrich, Kai Fehske, Rainer H Meffert, Hendrik Jansen
The coronal unicondylar fracture of the distal femur (AO 33-B3) is a rare intraarticular injury within the weight bearing area of the knee, initially described by Albert Hoffa in 1904. We report an unusual combination of a Hoffa fracture with lateral patellar dislocation in a young adult. Our patient sustained the injury by a sudden twist of his leg during sports. He presented clinically with knee swelling, dislocation of the patella, and localized tenderness; unable to bare weight. After plane radiograph confirmed the injury, manual reduction of the patella was done by hyperextension of the knee and medialward pressure...
June 2017: Trauma Case Reports
https://www.readbyqxmd.com/read/29613930/operative-experience-during-orthopaedic-residency-compared-with-early-practice-in-the-u-s
#8
Jessica M Kohring, Michael O Bishop, Angela P Presson, John J Harrast, J Lawrence Marsh, Theodore W Parsons, Charles L Saltzman
BACKGROUND: The goal of surgical education is to prepare the trainee for independent practice; however, the relevance of the current residency experience to practice remains uncertain. The purpose of this study was to identify the surgical procedures most frequently performed in orthopaedic residency and in early surgical practice and to identify surgical procedures performed more often or less often in orthopaedic residency compared with early surgical practice. METHODS: This retrospective cohort study included American Medical Association (AMA) Current Procedural Terminology (CPT) codes (n = 4,329,561 procedures) reported by all U...
April 4, 2018: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29611163/cadaveric-biomechanical-study-on-medial-retinaculum-its-stabilising-role-for-the-patella-against-lateral-dislocation
#9
Leonidas Mitrogiannis, Alexandra Barbouti, Panagiotis Kanavaros, Georgios Paraskevas, Aikaterini Kitsouli, Georgios Mitrogiannis, Panagiotis Kitsoulis
BACKGROUND: The aim of this study was to analyse the biomechanical role of medial retinaculum, as a stabilising factor against lateral patellar dislocation. MATERIALS AND METHODS: This cadaveric-biomechanical study included the patellae of ten cadaveric knees, which were surgically exposed and the medial retinaculum of each one was located. A stable 24.51N force was applied to the four parts of the quadriceps, and an increasing lateral displacing force was applied to the patella, up to 5mm dislocation...
April 3, 2018: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/29602887/proximal-tibiofibular-joint-dislocation-treated-using-flexible-and-permanent-syndesmosis-fixation
#10
Antonio Carlos Moscon, Ana Luiza Cabrera Martimbianco, Aires Duarte Junior, Guilherme Conforto Gracitelli
We present the case of a 40-year-old man who suffered an isolated proximal tibiofibular dislocation of the left knee after a trauma during a soccer game. Physical examination and radiographic imaging revealed an anterolateral dislocation of the proximal fibula. The diagnosis was confirmed by MRI. The treatment choice was open reduction and internal fixation under direct visualisation using flexible and permanent internal fixation. Postoperative treatment includes knee immobilisation during the first week, and partial weight was allowed for 2 weeks progressing to full weight bearing over 4 weeks...
March 30, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29601390/corr-insights%C3%A2-bearing-dislocation-and-progression-of-osteoarthritis-after-mobile-bearing-unicompartmental-knee-arthroplasty-vary-between-asian-and-western-patients-a-meta-analysis
#11
Michael D Ries
No abstract text is available yet for this article.
March 28, 2018: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/29600679/-diagnostic-value-of-mri-for-posterior-root-tear-of-medial-and-lateral-meniscus
#12
Yue-Nan Qian, Fang Liu, Yi-Long Dong, Chun-Yuan Cai
OBJECTIVE: To explore diagnostic value of MRI on posterior root tear of medial and lateral meniscus. METHODS: From January 2012 to January 2016, clinical data of 43 patients with meniscal posterior root tear confirmed by arthroscopy were retrospective analyzed, including 25 males and 18 females, aged from 27 to 69 years old with an average age of(42.5±8.3)years old;27 cases on the right side and 16 cases on the left side. MRI examinations of 43 patients with tear of posterior meniscus root confirmed by knee arthroscopies were retrospectively reviewed...
March 25, 2018: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29576460/shape-memory-alloy-based-smart-knee-spacer-for-total-knee-arthroplasty-3d-cad-modelling-and-a-computational-study
#13
Arvind Gautam, Miguel A Callejas, Amit Acharyya, Swati Ghosh Acharyya
This study introduced a shape memory alloy (SMA)-based smart knee spacer for total knee arthroplasty (TKA). Subsequently, a 3D CAD model of a smart tibial component of TKA was designed in Solidworks software, and verified using a finite element analysis in ANSYS Workbench. The two major properties of the SMA (NiTi), the pseudoelasticity (PE) and shape memory effect (SME), were exploited, modelled, and analysed for a TKA application. The effectiveness of the proposed model was verified in ANSYS Workbench through the finite element analysis (FEA) of the maximum deformation and equivalent (von Mises) stress distribution...
March 22, 2018: Medical Engineering & Physics
https://www.readbyqxmd.com/read/29576239/epidemiology-and-outcomes-of-traumatic-knee-dislocations-isolated-vs-multi-trauma-injuries
#14
Genevieve Darcy, Elton Edwards, Raphael Hau
BACKGROUND AND PURPOSE: Traumatic dislocation of the knee (TKD) is a rare injury, accounting for approximately 0.02% of orthopaedic injuries. They are a challenging entity for orthopaedic surgeons to manage, and can have devastating consequences. The aim of this study was to describe the epidemiology of traumatic knee dislocations (TKD'S) and contrast the incidence of neurovascular injury between isolated and multi-trauma dislocations as well as key patient reported outcomes achieved between these groups...
February 21, 2018: Injury
https://www.readbyqxmd.com/read/29573697/changes-in-total-knee-arthroplasty-design-affect-in-vivo-kinematics-in-a-redesigned-total-knee-system-a-fluoroscopy-study
#15
Francesco Zambianchi, Francesco Fiacchi, Vincenzo Lombari, Luca Venturelli, Andrea Marcovigi, Andrea Giorgini, Fabio Catani
BACKGROUND: Journey II Bi-Cruciate-Stabilized knee system was designed to overcome the complications of Journey Bi-Cruciate-Stabilized, including ilio-tibial band inflammation and episodes of dislocation. The purpose of this study was to assess differences in knee kinematics between the first and second-generation design by means of video-fluoroscopy. Re-designed prosthesis in-vivo kinematics was analyzed during activities of daily living and results were eventually compared with those of the previous system, as reported in a previously published study...
March 20, 2018: Clinical Biomechanics
https://www.readbyqxmd.com/read/29552481/surgical-management-of-the-multiple-ligament-knee-injury
#16
Kadir Buyukdogan, Michael S Laidlaw, Mark D Miller
The management of multiligament knee injury is a complex process starting with the adequate identification of the injury. A detailed physical and radiographic examination with a thorough understanding of knee anatomy is crucial to assess all damaged structures: anterior cruciate ligament, posterior cruciate ligament, posteromedial corner including the medial collateral ligament, and posterolateral corner including the lateral collateral ligament. Several surgical techniques have been developed throughout the years to adequately address these ligament insufficiencies...
February 2018: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29534271/multiple-ligament-knee-injuries
#17
Gregory C Fanelli, David G Fanelli
The posterior cruciate ligament (PCL)-based multiple ligament injury, or dislocated knee, is often part of a multisystem injury complex that not only includes the knee ligaments, but may also include blood vessels, skin, nerves, fractures, and other organ system trauma. These factors must be considered in the scope of treating this complex knee injury. These complex knee ligament injuries can result in significant functional instability for the affected individual. This article will discuss multiple ligament knee injury evaluation, treatment, and special considerations in the pediatric and adolescent population...
March 13, 2018: Journal of Knee Surgery
https://www.readbyqxmd.com/read/29525546/polyethylene-liner-dislocation-of-fixed-bearing-medial-oxinium-unicompartmental-arthroplasty-with-severe-metallosis
#18
Nicholas Greco, Keith Berend
The case of an atraumatic dislocation of a fixed bearing in a medial unicompartmental arthroplasty with an oxinium femoral component is presented. A review of the literature pertaining to knee arthroplasty locking mechanisms is discussed. Potential modes of locking mechanisms failure are reviewed including the recognition of such failures in the clinical setting. This is the first report of a dislocated fixed-bearing medial oxinium unicompartmental arthroplasty and consequent metal arthrogram.
March 7, 2018: Knee
https://www.readbyqxmd.com/read/29525028/knee-mli-injuries-common-problems-and-solutions
#19
REVIEW
Niv Marom, Joseph J Ruzbarsky, Naomi Roselaar, Robert G Marx
The multiple ligament injured knee presents a challenge with regard to management and treatment. Immediate management of the acute injury requires special attention and thorough examination because knee dislocations have been associated with significant complications. Treatment options range from closed reduction and immobilization to surgical repair and/or reconstruction of the injured ligaments. This article focuses on complications that may result from surgical treatments of the multiple ligament injured knee and ways of prevention...
April 2018: Clinics in Sports Medicine
https://www.readbyqxmd.com/read/29518501/traumatic-knee-dislocation-and-popliteal-artery-injury-a-case-series
#20
Christos D Karkos, Georgios Koudounas, Ioakeim T Giagtzidis, Maria-Aphroditi Mitka, Ioannis Pliatsios, Konstantinos O Papazoglou
Popliteal artery injury is a potentially-limb threatening complication of traumatic knee dislocation. We describe two such cases that had been treated in our unit over the last decade. The first one was a 23-year-old woman who injured her right knee during a long jump competition and the second was a 27-year-old man who had a motorbike accident. Both suffered traumatic knee dislocation along with significant ligament and neurovascular injuries. In the first patient, the popliteal artery was found thrombosed due to intimal rupture and required thrombectomy and vein patch repair, whereas, in the second patient, the artery was completely transected and required end-to-end anastomosis...
March 5, 2018: Annals of Vascular Surgery
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