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meniscus injury

Ingrid Eitzen, Hege Grindem, Agnethe Nilstad, Håvard Moksnes, May Arna Risberg
BACKGROUND: Reduced quadriceps strength influences knee function and increases the risk of knee osteoarthritis. Thus, it is of significant clinical relevance to precisely quantify strength deficits in patients with knee injuries. PURPOSE: To evaluate isokinetic concentric quadriceps muscle strength torque values, assessed both from peak torque and at specific knee flexion joint angles, in patients with anterior cruciate ligament (ACL) injury, focal cartilage lesions, and degenerative meniscus tears...
October 2016: Orthopaedic Journal of Sports Medicine
Aaron J Krych, Patrick J Reardon, Nick R Johnson, Rohith Mohan, Logan Peter, Bruce A Levy, Michael J Stuart
PURPOSE: Medial meniscus posterior root tears (MMPRTs) are a significant source of pain and dysfunction, but little is known about the natural history and outcome and for non-operative management of these lesions. The purpose of this study was to evaluate (1) the mid-term clinical and radiographic outcomes of non-operative treatment of MMPRTs and (2) risk factors for worse outcomes. METHODS: A retrospective review was performed for patients with symptomatic, unrepaired MMPRTs and a minimum 2-year follow-up for IKDC and Tegner outcome scores...
October 19, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
Elizabeth M Meier, Bin Wu, Aamir Siddiqui, Donna G Tepper, Michael T Longaker, Mai T Lam
: Efforts have been made to engineer knee meniscus tissue for injury repair, yet most attempts have been unsuccessful. Creating a cell source that resembles the complex, heterogeneous phenotype of the meniscus cell remains difficult. Stem cell differentiation has been investigated, mainly using bone marrow mesenchymal cells and biochemical means for differentiation, resulting in no solution. Mechanical stimulation has been investigated to an extent with no conclusion. Here, we explore the potential for and effectiveness of mechanical stimulation to induce the meniscal phenotype in adipose-derived stromal cells...
September 2016: Plastic and Reconstructive Surgery. Global Open
Sung Il Wang
In symptomatic discoid medial meniscus, partial meniscectomy is the principal treatment method and can yield promising short-term results. However, unlike the nondiscoid meniscus, discoid medial meniscus is frequently associated with horizontal cleavage tears, attributable to the presence of myxoid degeneration in the intrameniscal substance, in that it may potentially occur deteriorating long-term results because of re-tearing of remaining meniscus or secondary degeneration of cartilage of the medial compartment after meniscectomy...
October 14, 2016: Acta Orthopaedica et Traumatologica Turcica
Ravi Gupta, Gladson David Masih, Gaurav Chander, Vikas Bachhal
BACKGROUND: Despite improvements in instability after anterior cruciate ligament (ACL) reconstruction, associated intraarticular injuries remain a major cause of concern and important prognostic factor for long term results as it may lead to osteoarthritis. Delay in ACL reconstruction has been in variably linked to increase in these injuries but there is lack of consensus regarding optimal timing of reconstruction. The goal of this study was to investigate delay in surgery and other factors, associated with intraarticular injuries in ACL deficient knees...
September 2016: Indian Journal of Orthopaedics
J Miotla Zarebska, A Chanalaris, C Driscoll, A Burleigh, R E Miller, A M Malfait, B Stott, T L Vincent
OBJECTIVE: The role of inflammation in structural and symptomatic osteoarthritis (OA) remains unclear. One key mediator of inflammation is the chemokine CCL2, primarily responsible for attracting monocytes to sites of injury. We investigated the role of CCL2 and its receptor CCR2 in experimental OA. DESIGN: OA was induced in 10 week old male wild type, Ccl2(-/-) and Ccr2(-/-) mice, by destabilisation of the medial meniscus (DMM). RNA was extracted from whole joints at 6h and 7 days post surgery and examined by RT-PCR...
October 13, 2016: Osteoarthritis and Cartilage
C H Siebert, R Becker, M Buchner, J Förster, K-H Frosch, A Losch, P Niemeyer, S Scheffler
The number of patients with meniscal injuries is increasing constantly, but the treatment algorithms are undergoing continuous change. The effects of meniscal surgery, as well as the indications for the procedure, are currently a matter of heated debate. Various German speaking associations addressing topics related to the knee have joined forces to develop guidelines for the diagnosis, evaluation and therapy of meniscal lesions. The hope is that this first of two publications will shed light on some of the ongoing issues and offer guidance to health care professionals treating these patients...
October 11, 2016: Zeitschrift Für Orthopädie und Unfallchirurgie
Ozkan Kose, Selahattin Ozyurek, Adil Turan, Ferhat Guler
Reverse Segond fracture is originally described as an indirect radiographic clue for a specific injury complex of the knee joint that includes posterior cruciate ligament (PCL) rupture and medial meniscal tear. Herein, we describe a case with reverse Segond fracture associated with PCL avulsion fracture instead of PCL rupture. According to current literature review, reverse Segond fracture is not only associated with PCL and medial meniscal injuries, but also frequently associated with anterior cruciate ligament (ACL) and medial collateral ligament (MCL) injuries...
October 7, 2016: Acta Orthopaedica et Traumatologica Turcica
Michael D Ringler, Ezekiel E Shotts, Mark S Collins, B Matthew Howe
OBJECTIVE: Unlike with anterior cruciate ligament injury, little is known about the prevalence of intra-articular pathology associated with isolated posterior cruciate ligament (PCL) injury in the knee. The objectives of this study were to characterize and identify the frequency of meniscal tears and osteochondral injuries in these patients, and to see if management might be affected. MATERIALS AND METHODS: Altogether, 48 knee MRI exams with isolated PCL tears were evaluated for the presence of: grade and location of PCL tear, meniscal tear, articular chondral lesion, bone bruise, and fracture...
October 4, 2016: Skeletal Radiology
J Martin Leland
With knee arthroscopy being the most common orthopaedic procedure performed in the United States, it is crucial to be able to access the entire knee without iatrogenic injury. Frequently orthopaedic surgeons encounter tight medial compartments, creating difficulty in accessing the posterior horn of the medial meniscus without damaging the articular cartilage. Partial release of the medial collateral ligament during knee arthroscopy protects chondrocytes.
October 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
Jordi Tomás-Hernández, Joan Minguell Monyart, Jordi Teixidor Serra, Merce Reverté Vinaixa, Ernesto Guerra Farfan, Vicente Molero García, Enric Castellet Feliu
Tibial plateau fractures are a heterogeneous group of lesions with multiple fracture patterns. They are often associated with soft tissue injuries, the lateral meniscus and the anterior cruciate ligament (ACL) being the most common structures affected. The purpose of this article is to present a case series of an often missed unusual injury pattern that consists on the association of a large anteromedial tibial plateau fracture with a posterolateral (PL) knee corner injury without involvement of the cruciate ligaments...
September 2016: Injury
Ulf Sigurdsson, Gunilla Müller, Carl Siversson, Eveliina Lammentausta, Jonas Svensson, Carl-Johan Tiderius, Leif E Dahlberg
BACKGROUND: Lesions in the meniscus are risk factors for developing knee osteoarthritis (OA), not least because of the role of the meniscus in the pathological progression of OA. Delayed gadolinium enhanced MRI of cartilage (dGEMRIC) has extensively been used to identify pre-radiographic cartilage changes in OA. In contrast, its counterpart with regard to examination of the meniscus, gadolinium enhanced MRI of meniscus (dGEMRIM), has been less utilized. In this study we use 3D dGEMRIM in patients with meniscus lesions and compare them with previous results of healthy individuals...
September 29, 2016: BMC Musculoskeletal Disorders
Karima Belhaj, Hicham Elhyaoui, Soumia Meftah, Laila Mahir, Mohamed Rafai, Abdelhak Garch, Fatima Lmidmani, Abdellatif Elfatimi
OBJECTIVE: Meniscal injuries are an extremely common condition that also occurs well in young adults at a sporting injury, than in most elderly where it is often the degenerative changes in the knee illustration. The application of isokinetic knee is widespread, either in assessment or rehabilitation. The objective of the study is to determine the contribution of the isokinetic for meniscal pathology. MATERIAL/PATIENTS AND METHODS: This is a retrospective study of 6 months, including patients followed in physical medicine and rehabilitation for meniscal lesions confirmed by imaging and in whom supported classical rehabilitative and/or isokinetic was indicated...
September 2016: Annals of Physical and Rehabilitation Medicine
Yuya Kodama, Takayuki Furumatsu, Shinichi Miyazawa, Masataka Fujii, Takaaki Tanaka, Hiroto Inoue, Toshifumi Ozaki
The anterior root of the lateral meniscus provides functional stability to the meniscus. In this study, we evaluated the relationship between the position of the tibial tunnel and extrusion of the lateral meniscus after anterior cruciate ligament reconstruction, where extrusion provides a proxy measure of injury to the anterior root. The relationship between extrusion and tibial tunnel location was retrospectively evaluated from computed tomography and magnetic resonance images of 26 reconstructed knees, contributed by 25 patients aged 17 to 31 years...
September 27, 2016: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
Ahmet Karakasli, Nihat Acar, Onur Basci, Ahmet Karaarslan, Mehmet Erduran, Erol Kaya
OBJECTIVES: The aim of this study was to analyze the effect of tibial tunnel positioning in single bundle and double bundle ACL reconstructions on lateral meniscus anterior root. MATERIALS: Twelve single knee cadavers were used, 6 for a single bundle ACL reconstruction, which were reamed gradually starting from 8 mm, 9 mm and ended with a 10 mm reamers, while the other 6 were prepared for a double bundle ACL reconstruction in which 7 mm reamer for the AM tunnel and 6 mm reamer for the PL tunnel were used...
September 22, 2016: Acta Orthopaedica et Traumatologica Turcica
Michael A David, Melanie K Smith, Rachael N Pilachowski, Avery T White, Ryan C Locke, Christopher Price
Post-traumatic osteoarthritis (PTOA) is an accelerated form of osteoarthritic cartilage degeneration affecting approximately 20-50% of patients experiencing joint injury. Currently PTOA is incurable; to better understand the etiology of PTOA and to develop rational anti-osteoarthritic therapies, it is critical to understand the spatiotemporal initiation and the progression of PTOA. In this study, we employed semi-quantitative histological scoring and quantitative damage analysis to examine disease progression in the murine destabilization of the medial meniscus (DMM) model of PTOA from early (3 days) through late- (112 days) disease timepoints...
September 24, 2016: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
Laura W Gamer, Lin Xiang, Vicki Rosen
Meniscal injuries are commonplace, but current surgical repair procedures do not prevent degenerative joint changes that occur after meniscal injury and often lead to osteoarthritis. Successful tissue regeneration in adults often recapitulates events that occur during embryogenesis, suggesting that understanding the regulatory pathways controlling these early processes may provide clues for developing strategies for tissue repair. While the mouse is now widely used to study joint diseases, detailed knowledge of the basic biology of murine meniscus is not readily available...
September 24, 2016: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
Robert W Westermann, Thomas Sean Lynch, Kurt P Spindler
Since 2015, the Multicenter Orthopedic Outcomes Network (MOON) has addressed several factors associated with patient outcome after anterior cruciate ligament (ACL) injury. These factors include predictors of high grade knee laxity, the impact of meniscus treatment on joint space narrowing after surgery, graft selection, treating diabetic patients, predictors of clinically significant pain, and outcomes of patients where meniscus tears were left in situ without treatment. The presence of meniscus tears and generalized laxity predict a lax examination under anesthesia prior to surgery...
October 2016: Journal of Knee Surgery
L Felli, G Garlaschi, A Muda, A Tagliafico, M Formica, A Zanirato, M Alessio-Mazzola
PURPOSE: The aim of this study was to compare the accuracy of clinical examination to that of MRI evaluated by two independent radiologists for the diagnosis of meniscal tears and chronic anterior cruciate ligament injuries and to assess the MRI accuracy in the diagnosis of cartilage defects. METHODS: Seventy-six consecutive patients with suspected intra-articular knee pathology were prospectively evaluated by objective examination, 1.5 T MRI, re-examined by trained radiologist and arthroscopy...
September 14, 2016: Musculoskeletal Surgery
Kenneth Pihl, Ewa M Roos, Nis Nissen, Uffe JøRgensen, Jeppe Schjerning, Jonas B Thorlund
Background and purpose - Patients' expectations of outcomes following arthroscopic meniscus surgery are largely unknown. We investigated patients' expectations concerning recovery and participation in leisure-time activities after arthroscopic meniscus surgery and the postoperative fulfillment of these. Patients and methods - The study sample consisted of 491 consecutively recruited patients (mean age 50 (SD 13) years, 55% men) who were assigned for arthroscopy on suspicion of meniscus injury and later verified by arthroscopy...
September 13, 2016: Acta Orthopaedica
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