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https://www.readbyqxmd.com/read/29227373/incidence-of-meniscal-entrapment-and-associated-knee-injuries-in-tibial-spine-avulsions
#1
Jason T Rhodes, Peter C Cannamela, Aristides I Cruz, Meredith Mayo, Alexandra C Styhl, Connor G Richmond, Theodore J Ganley, Kevin G Shea
BACKGROUND: Tibial spine avulsions (TSA) have historically been treated as isolated injuries. Data on associated injuries are limited with existing literature reporting wide ranging incidences. The purpose of this multicenter study was to (1) describe the incidence of meniscal entrapment and associated knee injuries in TSA and to (2) compare surgical and magnetic resonance image (MRI) findings for these injuries. Our hypothesis is that tibial spine injuries are not usually isolated injuries, and other meniscal, ligament, and cartilage injuries may be present...
December 8, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/29225019/primary-versus-revision-anterior-cruciate-ligament-reconstruction-patient-demographics-radiographic-findings-and-associated-lesions
#2
Justin J Mitchell, Mark E Cinque, Grant J Dornan, Lauren M Matheny, Chase S Dean, Brad Kruckeberg, Gilbert Moatshe, Jorge Chahla, Robert F LaPrade
PURPOSE: The purpose of this study was to evaluate the differences in intra-articular pathology, demographic characteristics, and radiographic characteristics of the knee associated with primary anterior cruciate ligament reconstruction (ACLR) versus revision ACLR at the time of initial presentation with either a native anterior cruciate ligament tear or an anterior cruciate ligament graft tear. Secondarily, we aimed to investigate risk factors for concomitant medial and lateral meniscal tears and cartilage injuries at the time of ACLR...
December 7, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29211354/correlations-between-iron-content-in-knee-joint-tissues-and-chosen-indices-of-peripheral-blood-morphology
#3
Barbara Brodziak-Dopierała, Wojciech Roczniak, Agata Jakóbik-Kolon, Joanna Kluczka, Bogdan Koczy, Jerzy Kwapuliński, Magdalena Babuśka-Roczniak
BACKGROUND: Iron as a cofactor of enzymes takes part in the synthesis of the bone matrix. Severe deficiency of iron reduces the strength and mineral density of bones, whereas its excess may increase oxidative stress. In this context, it is essential to determine the iron content in knee joint tissues. OBJECTIVES: The study objective was to determine the level of iron in the tissues of the knee joint, i.e., in the femoral bone, tibia and meniscus. MATERIAL AND METHODS: Material for analysis was obtained during endoprosthetic surgery of the knee joint...
October 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/29209793/degenerative-changes-after-posterior-cruciate-ligament-reconstruction-are-irrespective-of-posterior-knee-stability-mri-based-long-term-results
#4
Clemens Gwinner, Andreas Weiler, Timm Denecke, Julian M M Rogasch, Heide Boeth, Tobias M Jung
INTRODUCTION: Posterior cruciate ligament reconstruction (PCLR) is advocated to prevent an early onset of osteoarthritis. We hypothesized that posterior instability after PCLR correlates with degenerative changes. MATERIALS AND METHODS: MRIs of 42 (12 female/30 male; 39 ± 9 years) patients were enrolled with a minimum 5-year follow-up (FFU) after PCLR. In addition, 25 contralateral and 15 follow-up MRIs (12 months after baseline) were performed. Degenerative changes were graded using WORMS...
December 6, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/29202765/a-novel-technique-for-modified-all-inside-repair-of-bucket-handle-meniscus-tears-using-standard-arthroscopic-portals
#5
Jing Hui Yik, Bryan Thean Howe Koh, Wilson Wang
BACKGROUND: Bucket-handle meniscus tears (BHMT) are often displaced and unstable. The inside-out technique of repairing such tears is currently the gold standard. All-inside repair with meniscal fixators is getting increasingly popular. Shortcomings of the inside-out technique include neurovascular complications, especially saphenous nerve palsy, and retention of a non-resorbable suture which can result in discomfort to patient, granuloma formation, and a foci of infection. Hence, the purpose of this project was to innovate a novel all-inside technique to precisely reduce and fix BHMT while avoiding neurovascular complications and retention of a non-resorbable suture...
December 4, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29202561/meniscal-extrusion-as-booster-of-osteoarthritis
#6
R Papalia, G Papalia, F Russo, L A Diaz, F Bressi, S Sterzi, V Denaro
Meniscal extrusion (ME) has shown to play a critical but still unclear role in osteoarthritis (OA) development. ME has been described as an important risk factor in the progression of knee OA, as it is involved in the thinning of articular cartilage, joint space narrowing, spontaneous osteonecrosis of the knee and subchondral bone marrow lesions. Meniscal damage of any degree of severity could cause ME in both compartments, but it is commonly associated with severe meniscal tears or root tears mainly in the medial meniscus...
December 4, 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/29198047/medial-meniscus-grafting-restores-normal-tibiofemoral-contact-pressures
#7
John Nyland, Kirk Campbell, Alaa Kalloub, Eric J Strauss, Katrina Kuban, David N M Caborn
BACKGROUND: Tissue excision in the setting of a meniscal tear has been shown to dramatically increase peak contact stresses in the affected tibiofemoral joint compartment, leading to the development of degenerative changes and osteoarthritis. PURPOSE/HYPOTHESIS: The current in vitro study utilized a porcine model to evaluate the effectiveness of segmental medial meniscal grafting following partial meniscectomy. The study hypothesis was that the procedure would normalize medial tibofemoral joint compartment pressure magnitudes, areas, and locations relative to an intact meniscus...
December 2, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/29192542/the-effects-of-a-simulated-occupational-kneeling-exposure-on-squat-mechanics-and-knee-joint-load-during-gait
#8
Liana Michele Tennant, Helen Christina Chong, Stacey Marie Acker
Occupational kneeling is associated with an increased risk for tibiofemoral knee osteoarthritis. Forces on the knee in the kneeling posture, as well as the greater incidence of meniscus tears among workers likely contribute to the increased risk. We hypothesize that an additional mechanism may contribute - altered neuromuscular control due to prolonged high knee flexion. Forty participants (20 male, 20 female) completed an evaluation of gait and squatting before, immediately following, and 30 minutes following a 30-minute simulated occupational kneeling exposure...
December 1, 2017: Ergonomics
https://www.readbyqxmd.com/read/29189618/bilateral-patellar-tendon-rupture
#9
Mary Kamienski
The knee is the most complex and largest joint in the body. Injuries to any part of this joint affect the entire body. There are multiple injuries that can occur to the knee, with the most common being ligament and meniscus tears. A not-so-common injury to the knee is a patellar tendon rupture. A bilateral patellar tendon rupture is extremely rare. A case study of a 43-year-old man who sustained a bilateral patellar tendon rupture while playing softball is used to present this devastating injury. This discussion includes the incidence and diagnosis of the tear, surgical repair, as well as a description of the comprehensive rehabilitation process necessary to allow the patient to return to normal physical activity...
November 2017: Orthopaedic Nursing
https://www.readbyqxmd.com/read/29189474/pediatric-acl-reconstruction-and-return-to-the-operating-room-revision-is-less-than-half-of-the-story
#10
Christopher J DeFrancesco, Eileen P Storey, John M Flynn, Theodore J Ganley
BACKGROUND: Although there are several causes of unplanned return to the operating room (RTOR) following pediatric anterior cruciate ligament (ACL) reconstruction (ACLR), prior outcomes studies focus primarily on the risk of graft failure. We sought to comprehensively describe indications for RTOR in pediatric primary ACLR patients, estimate associated rates of RTOR, and assess the impact of concomitant meniscal procedures on these rates. METHODS: This retrospective cohort study considered patients who underwent primary ACLR at an urban, pediatric tertiary care hospital between 2013 and 2015...
November 20, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/29188421/arthroscopic-partial-meniscectomy-in-young-patients-with-symptomatic-discoid-lateral-meniscus-an-average-10-year-follow-up-study
#11
Chang-Rack Lee, Seong-Il Bin, Jong-Min Kim, Bum-Sik Lee, Nam-Ki Kim
INTRODUCTION: The aim of this study is to evaluate mid-to-long-term clinical and radiological outcomes after an arthroscopic partial meniscectomy for symptomatic discoid lateral meniscus (DLM) in young patients and to determine whether degeneration of the residual meniscus and articular cartilage progresses during the follow-up period using magnetic resonance imaging (MRI). MATERIALS AND METHODS: We retrospectively reviewed patients aged ≤ 40 years at surgery who underwent arthroscopic partial meniscectomy for symptomatic DLM and were followed up for ≥ 5 years...
November 29, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/29188333/dynamically-tensioned-acl-functional-knee-braces-reduce-acl-and-meniscal-strain
#12
Sebastian Tomescu, Ryan Bakker, David Wasserstein, Mayank Kalra, Micah Nicholls, Cari Whyne, Naveen Chandrashekar
PURPOSE: The effectiveness of ACL functional knee braces to reduce meniscal and ACL strain after ACL injury or reconstruction is not well understood. A new dynamic knee tensioning brace system has been designed to apply an active stabilizing force to the knee. The ability of this system to reduce tissue strains is unknown. The purpose of this study was to test the ability of the dynamically tensioned brace to reduce strain in both the ACL and meniscus during rehabilitation activities...
November 29, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29183885/can-we-predict-the-clinical-outcome-of-arthroscopic-partial-meniscectomy-a-systematic-review
#13
REVIEW
Susanne M Eijgenraam, Max Reijman, Sita M A Bierma-Zeinstra, Daan T van Yperen, Duncan E Meuffels
NHS-PROSPERO REGISTRATION NUMBER: 42016048592 OBJECTIVE: In order to make a more evidence-based selection of patients who would benefit the most from arthroscopic partial meniscectomy (APM), knowledge of prognostic factors is essential. We conducted a systematic review of predictors for the clinical outcome following APM. DESIGN: Systematic review DATA SOURCES: Medline, Embase, Cochrane Central Register, Web of Science, SPORTDiscus, PubMed Publisher, Google Scholar INCLUSION CRITERIA: Report an association between factor(s) and clinical outcome; validated questionnaire; follow-up >1 year...
November 28, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/29183645/survivorship-analysis-and-clinical-outcomes-of-transtibial-pullout-repair-for-medial-meniscus-posterior-root-tears-a-5-to-10-year-follow-up-study
#14
Kyu Sung Chung, June Mo Noh, Jeong Ku Ha, Ho Jong Ra, Sung Bae Park, Hyung Kook Kim, Jin Goo Kim
PURPOSE: This study investigated the clinical outcomes and mid- to long-term survival rates in patients undergoing transtibial pullout repair of medial meniscus posterior root tears (MMPRTs) after a minimum follow-up of 5 years. METHODS: Between 2005 and 2011, patients with MMPRTs who had been followed for at least 5 years after undergoing transtibial pullout repair were recruited. Participants were identified using medical records and information in a prospectively collected database...
November 25, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29176654/programmed-biomolecule-delivery-to-enable-and-direct-cell-migration-for-connective-tissue-repair
#15
Feini Qu, Julianne L Holloway, John L Esterhai, Jason A Burdick, Robert L Mauck
Dense connective tissue injuries have limited repair, due to the paucity of cells at the wound site. We hypothesize that decreasing the density of the local extracellular matrix (ECM) in conjunction with releasing chemoattractive signals increases cellularity and tissue formation after injury. Using the knee meniscus as a model system, we query interstitial cell migration in the context of migratory barriers using a novel tissue Boyden chamber and show that a gradient of platelet-derived growth factor-AB (PDGF-AB) expedites migration through native tissue...
November 24, 2017: Nature Communications
https://www.readbyqxmd.com/read/29173557/secondary-stabilizers-of-tibial-rotation-in-the-intact-and-anterior-cruciate-ligament-deficient-knee
#16
REVIEW
Daniel James Kaplan, Laith M Jazrawi
The controversy regarding the existence and function of the anterolateral ligament or anterolateral complex has reinvigorated interest in rotational stability of the knee joint. This is particularly true of anterolateral rotary instability, as many patients, despite anatomic reconstruction of their anterior cruciate ligament, continue to experience instability. Many experts point toward compromised anterolateral restraints as the underlying culprit, namely, the anterolateral complex, which includes the iliotibial band, anterolateral capsule, lateral meniscus, and lateral collateral ligament...
January 2018: Clinics in Sports Medicine
https://www.readbyqxmd.com/read/29173549/a-layered-anatomic-description-of-the-anterolateral-complex-of-the-knee
#17
REVIEW
Marcin Kowalczuk, Elmar Herbst, Jeremy M Burnham, Marcio Albers, Volker Musahl, Freddie H Fu
Variability in anatomic terminology, dissection protocols, and use of embalmed as opposed to fresh frozen specimens has led to the controversy surrounding the "anterolateral ligament of the knee." Conceptually the complex anatomy of the anterolateral knee is made up of the superficial, middle, deep, and capsulo-osseous layers of the iliotibial band. The anterolateral capsule is deep to these tissues and is directly attached to the lateral meniscus. These structures collectively form the anterolateral complex of the knee...
January 2018: Clinics in Sports Medicine
https://www.readbyqxmd.com/read/29172393/the-meniscofemoral-ligament-mimicking-a-lateral-meniscus-tear
#18
Bong Keun Park, Hohyoung Lee, Seong-Tae Kim, Min Geun Yoon
A 58-year-old male patient who had developed left knee pain with a history of trauma was referred to our hospital. Physical examination and further examination by magnetic resonance imaging revealed results that closely resemble a horizontal tear of the lateral meniscus and a tear of the medial meniscus. Arthroscopically, we found a cord-like structure originating from the posterior 1/3 portion of the lateral meniscus and passing obliquely toward the medial femoral condyle in front of the posterior cruciate ligament without a tear of the lateral meniscus...
December 1, 2017: Knee Surgery & related Research
https://www.readbyqxmd.com/read/29170181/multiple-hybrid-sutures-of-bucket-handle-injury-on-the-lateral-and-medial-meniscus-of-the-knee
#19
Diego Costa Astur, Bruno Silveira Pavei, Camila Cohen Kaleka, Moises Cohen
The objective of the study is to show possibilities of several combinations of suture techniques in a rare bicompartmental bucket handle injury. According to specific injury characteristics, combined suturing techniques were used. The option for different meniscal suture techniques in the two knee compartments allowed the patient, after completing the treatment, to return to his activities with a preserved meniscus. Although meniscectomy continues to be a chosen technique in bucket handle injury, we attempted to show a case of bicompartmental meniscal suture with different techniques...
November 23, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29168758/the-content-of-structural-and-trace-elements-in-the-knee-joint-tissues
#20
Wojciech Roczniak, Barbara Brodziak-Dopierała, Elżbieta Cipora, Krzysztof Mitko, Agata Jakóbik-Kolon, Magdalena Konieczny, Magdalena Babuśka-Roczniak
Many elements are responsible for the balance in bone tissue, including those which constitute a substantial proportion of bone mass, i.e., calcium, phosphorus and magnesium, as well as minor elements such as strontium. In addition, toxic elements acquired via occupational and environmental exposure, e.g., Pb, are included in the basic bone tissue composition. The study objective was to determine the content of strontium, lead, calcium, phosphorus, sodium and magnesium in chosen components of the knee joint, i...
November 23, 2017: International Journal of Environmental Research and Public Health
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