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Lateral meniscus tear

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https://www.readbyqxmd.com/read/28536855/rotational-laxity-control-by-the-anterolateral-ligament-and-the-lateral-meniscus-is-dependent-on-knee-flexion-angle-a-cadaveric-biomechanical-study
#1
Timothy Lording, Gillian Corbo, Dianne Bryant, Timothy A Burkhart, Alan Getgood
BACKGROUND: Injury to the anterolateral ligament (ALL) has been reported to contribute to high-grade anterolateral laxity after anterior cruciate ligament (ACL) injury. Failure to address ALL injury has been suggested as a cause of persistent rotational laxity after ACL reconstruction. Lateral meniscus posterior root (LMPR) tears have also been shown to cause increased internal rotation of the knee. QUESTIONS/PURPOSES: The purpose of this study was to determine the functional relationship between the ALL and LMPR in the control of internal rotation of the ACL-deficient knee...
May 23, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28534321/does-anatomic-single-bundle-acl-reconstruction-using-hamstring-autograft-produce-anterolateral-meniscal-root-tearing
#2
Sebastián Irarrázaval, Angel Masferrer-Pino, Maximiliano Ibañez, Tamer M A Shehata, María Naharro, Joan C Monllau
BACKGROUND: To determine if tibial tunnel reaming during anatomic single-bundle anterior cruciate ligament (ACL) reconstruction using hamstring autograft can result in anterolateral meniscal root injury, as diagnosed by magnetic resonance imaging (MRI). METHODS: A case series of 104 primary anatomic single-bundle ACL reconstructions using hamstring autograft was retrospectively reviewed. Pre- and post-operative (>1 year) MRIs were radiologically evaluated for each patient, with a lateral meniscus extrusion > 3 mm at the level of the medial collateral ligament midportion on a coronal MRI, to establish anterolateral meniscal root injury...
December 2017: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/28524271/histological-characteristics-of-knee-menisci-in-patients-with-osteoarthritis
#3
Dalton McDaniel, Emily Tilton, Kathryn Dominick, Kale Flory, Taylor Ernest, Jane C Johnson, Donet C Main, Peter Kondrashov
Existing data indicate knee menisci in patients with osteoarthritis (OA) show tearing, maceration, and fragmentation, but little is known about the change in histological structure. The aim of this study was to evaluate the change in the menisci histological structure in patients with clinically diagnosed knee OA. Fourteen patients undergoing surgical treatment of knee OA (OA group) and 14 cadaveric knees (control group) were assessed. Demographic data, medical history, synovial fluid, OA severity, medial meniscus (MM) tissue, and lateral meniscus (LM) tissue were collected from the OA group...
May 19, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28511868/tunnel-malpositions-in-anterior-cruciate-ligament-risk-cartilaginous-changes-and-bucket-handle-meniscal-tear-arthroscopic-survey-in-both-primary-and-revision-surgery
#4
Daisuke Chiba, Eiichi Tsuda, Harehiko Tsukada, Kohei Iio, Yasuyuki Ishibashi
OBJECTIVES: There are not many chances to arthroscopically reassess how graft tunnel malpositions in primary anterior cruciate ligament reconstruction (ACLR) associate with intra-articular degeneration in revision ACLR. This study was aimed to evaluate whether radiographic tunnel position in primary ACLR affect cartilaginous changes and bucket-handle meniscus tears in revision ACLR. METHODS: Thirty-five patients who underwent revision ACLR were recruited; their primary surgeries were single-bundle reconstructions...
May 13, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28508006/early-osteoarthritis-after-untreated-anterior-meniscal-root-tears-an-in-vivo-animal-study
#5
Brett D Steineman, Robert F LaPrade, Kelly S Santangelo, Brent T Warner, Laurie R Goodrich, Tammy L Haut Donahue
BACKGROUND: Meniscal root tears cause menisci and their insertions to inadequately distribute loads and potentially leave underlying articular cartilage unprotected. Untreated meniscal root tears are becoming increasingly recognized to induce joint degradation; however, little information is known about anterior meniscal root tears and how they affect joint tissue. PURPOSE: To observe the early degenerative changes within the synovial fluid, menisci, tibial articular cartilage, and subchondral bone after arthroscopic creation of untreated anterior meniscal root tears...
April 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28484790/lateral-meniscus-posterior-root-tear-contributes-to-anterolateral-rotational-instability-and-meniscus-extrusion-in-anterior-cruciate-ligament-injured-patients
#6
Takao Minami, Takeshi Muneta, Ichiro Sekiya, Toshifumi Watanabe, Tomoyuki Mochizuki, Masafumi Horie, Hiroki Katagiri, Koji Otabe, Toshiyuki Ohara, Mai Katakura, Hideyuki Koga
PURPOSE: The purposes of this study were to investigate (1) meniscus status and clinical findings in anterior cruciate ligament (ACL)-injured patients to clarify associations between the meniscus posterior root tear (PRT) and knee instability, and (2) magnetic resonance imaging (MRI) findings of the PRT to clarify sensitivity and specificity of MRI and prevalence of meniscus extrusion. METHODS: Three hundred and seventeen patients with primary ACL reconstruction were included...
May 8, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28451708/anterior-meniscopexy-a-meniscal-sparing-technique-for-the-treatment-of-locking-but-intact-discoid-lateral-meniscus
#7
Benjamin Johnson, Catriona Heaver, Robin Gilbert, Andrew Roberts
PURPOSE: Symptomatic discoid lateral meniscus without tears has traditionally been treated with excision of part or the entire meniscus. Resection of 15-34% of the meniscus increases tibiofemoral contact pressures by more than 350%. Treatment of discoid lateral meniscus with partial or total meniscectomy in childhood increases the risk of early-onset osteoarthritis in the knee. The incidence of osteoarthritis is directly proportional to the amount of meniscal tissue resected. This paper describes the meniscus-preserving technique of meniscopexy and presents the outcomes of all patients who have undergone this procedure in the management of lateral discoid meniscus in a single unit over a 14-year period...
April 27, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28447141/the-iliotibial-band-and-anterolateral-capsule-have-a-combined-attachment-to-the-segond-fracture
#8
Marcio Albers, Humza Shaikh, Elmar Herbst, Kentaro Onishi, Kanto Nagai, Volker Musahl, Freddie H Fu
The purpose of this report was to describe the injury mechanism, surgical findings, and outcomes in a 21-year-old professional female football player who presented with a complete anterior cruciate ligament (ACL) rupture and Segond fracture. Interview and video analysis were performed to elicit the injury mechanism. Clinical examination and imaging revealed a complete ACL tear, Segond fracture, lateral meniscus tear, MCL sprain, and posterolateral corner sprain. Examination under anaesthesia revealed Grade 2 pivot shift and varus/valgus instability...
April 26, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28434217/bilateral-hypoplasia-of-the-medial-and-lateral-menisci
#9
Yoon-Seok Youm, Sung-Do Cho, Hye-Yong Cho, Tae-Wook Kang
Hypoplasia of the meniscus is a very rare congenital abnormality, with only a few cases reported to date. A 9-year-old girl visited our hospital due to lateral knee pain following a hyperextension injury to the left knee. Magnetic resonance imaging showed hypoplasia of the medial and lateral menisci, as well as a posterior horn tear of the lateral meniscus, in both knee joints. To our knowledge, this is the first report of a patient with hypoplasia of the medial and lateral menisci in both knee joints.
June 1, 2017: Knee Surgery & related Research
https://www.readbyqxmd.com/read/28425757/the-prevalence-and-characteristics-of-a-subcortical-cystic-lesion-at-the-subspinous-region-of-the-knee
#10
Ji Ye Son, Young Cheol Yoon, Wook Jin, Jang Gyu Cha
Background Although we observed that subcortical cysts near the attachment of the meniscus or cruciate ligaments are frequently seen with a tear or degeneration of the adjacent meniscus and/or cruciate ligament, there is no large study describing the prevalence, distribution, and associated findings of these cysts. Purpose To evaluate the prevalence and distribution of subcortical cysts near the attachments of the meniscus or cruciate ligaments and evaluate pathologies of the meniscus or cruciate ligaments using magnetic resonance imaging (MRI)...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/28409107/a-transosseous-bone-bridge-repair-for-posterior-horn-meniscal-root-tears-during-anterior-cruciate-ligament-reconstruction
#11
Jonathan M Frank, Daniel J Liechti, Jack Anavian, Thomas R Hackett
Meniscal root tears occur in isolation or concurrently with ligamentous knee injury and cause significantly altered knee mechanics with the loss of normal meniscus hoop stress. This loss of normal meniscus function can result in abnormal knee kinematics and, subsequently, more rapid degenerative changes of the knee articular surface. In the setting of anterior cruciate ligament tear, the posterolateral meniscus root is most commonly damaged. Several techniques exist for meniscus root repair; however, none have been shown to be clearly superior...
February 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28397004/the-frequency-of-cartilage-lesions-in-non-injured-knees-with-symptomatic-meniscus-tears-results-from-an-arthroscopic-and-nir-near-infrared-spectroscopic-investigation
#12
Gunter Spahn, Holger Plettenberg, Martin Hoffmann, Holm-Torsten Klemm, Christoph Brochhausen-Delius, Gunther O Hofmann
INTRODUCTION: Are symptomatic tear injuries to the menisci of the knee frequently or always associated with cartilage damage to the corresponding articular surfaces and other joint surfaces, respectively? METHODS: A total of 137 patients (medial n = 127; lateral n = 10) underwent a meniscus resection. These patients showed no signs of a clear radiographic arthrosis and no MRI-detectable cartilage lesions > grade II. Traumatic injury was ruled out with a thorough medical history...
April 10, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28346834/outcomes-of-inside-out-meniscal-repair-in-the-setting-of-multiligament-reconstruction-in-the-knee
#13
Jorge Chahla, Chase S Dean, Lauren M Matheny, Justin J Mitchell, Mark E Cinque, Robert F LaPrade
BACKGROUND: Limited evidence exists for meniscal repair outcomes in a multiligament reconstruction setting. Purpose/Hypothesis: The purpose of this study was to assess outcomes and failure rates of meniscal repair in patients who underwent multiligament reconstruction compared with patients who underwent multiligament reconstruction but lacked meniscal tears. The authors hypothesized that the outcomes of meniscal repair associated with concomitant multiligament reconstruction would significantly improve from preoperatively to postoperatively at a minimum of 2 years after the index surgery...
March 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28282214/clinical-and-radiographic-outcomes-of-meniscus-surgery-and-future-targets-for-biologic-intervention-a-review-of-data-from-the-moon-group
#14
Robert W Westermann, Morgan Jones, David Wasserstein, Kurt P Spindler
Meniscus injury and treatment occurred with the majority of anterior cruciate ligament reconstructions (ACLR) in the multicenter orthopedic outcomes (MOON) cohort. We describe the patient-reported outcomes, radiographic outcomes, and predictors of pain from meniscus injuries and treatment in the setting of ACLR. Patient-reported outcomes improve significantly following meniscus repair with ACLR, but differences exist based on the meniscus injury laterally (medial or lateral). Patients undergoing medial meniscus repair have worse patient-reported outcomes and more pain compared to those with uninjured menisci...
May 2017: Connective Tissue Research
https://www.readbyqxmd.com/read/28258328/arthroscopic-meniscus-repair-for-recurrent-subluxation-of-the-lateral-meniscus
#15
Jin Hwan Ahn, Sang Hak Lee, Kang Il Kim, Juhyun Nam
PURPOSE: This study was undertaken to diagnose and to document the clinical results and technical aspects of arthroscopic meniscus repair for recurrent subluxation with peripheral tears around the popliteal hiatus of the lateral meniscus. METHODS: Twenty-three patients (24 knees) with symptomatic recurrent subluxation of the lateral meniscus treated by arthroscopic meniscus repair were included. The inclusion criteria were: (1) patients with knee pain, locking or snapping symptoms despite 3 months of conservative treatment; (2) non-discoid lateral meniscus; (3) stable knee, and (4) tears involving the red-white or red-red zone...
March 3, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28255568/association-between-lateral-posterior-tibial-slope-body-mass-index-and-acl-injury-risk
#16
Katherine M Bojicic, Mélanie L Beaulieu, Daniel Y Imaizumi Krieger, James A Ashton-Miller, Edward M Wojtys
BACKGROUND: While body mass index (BMI), a modifiable parameter, and knee morphology, a nonmodifiable parameter, have been identified as risk factors for anterior cruciate ligament (ACL) rupture, the interaction between them remains unknown. An understanding of this interaction is important because greater compressive axial force (perhaps due to greater BMI) applied to a knee that is already at an increased risk because of its geometry, such as a steep lateral posterior tibial slope, could further increase the probability of ACL injury...
February 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28238962/a-new-aiming-guide-can-create-the-tibial-tunnel-at-favorable-position-in-transtibial-pullout-repair-for-the-medial-meniscus-posterior-root-tear
#17
T Furumatsu, Y Kodama, M Fujii, T Tanaka, T Hino, Y Kamatsuki, K Yamada, S Miyazawa, T Ozaki
INTRODUCTION: Injuries to the medial meniscus (MM) posterior root lead to accelerated cartilage degeneration of the knee. An anatomic placement of the MM posterior root attachment is considered to be critical in transtibial pullout repair of the medial meniscus posterior root tear (MMPRT). However, tibial tunnel creation at the anatomic attachment of the MM posterior root is technically difficult using a conventional aiming device. The aim of this study was to compare two aiming guides...
May 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28229984/anatomical-knee-variants-in-discoid-lateral-meniscal-tears
#18
Xu-Xu Chen, Jian Li, Tao Wang, Yang Zhao, Hui Kang
BACKGROUND: Discoid lateral meniscus was a common meniscal dysplasia and was predisposed to tear. There were some anatomical knee variants in patients with discoid lateral meniscus. The aim of this study was to analyze the relationship between anatomical knee variants and discoid lateral meniscal tears. METHODS: There were totally 125 cases of discoid lateral meniscus enrolled in this study from February 2008 to December 2013. Eighty-seven patients who underwent arthroscopic surgery for right torn discoid lateral meniscus were enrolled in the torn group...
March 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28190582/correlation-of-parameters-on-preoperative-ct-images-with-intra-articular-soft-tissue-injuries-in-acute-tibial-plateau-fractures-a-review-of-132-patients-receiving-arif
#19
Hao-Che Tang, I-Jung Chen, Yu-Cheng Yeh, Chun-Jui Weng, Shih-Sheng Chang, Alvin Chao-Yu Chen, Yi-Sheng Chan
INTRODUCTION: Tibial plateau fractures often occur in conjunction with soft-tissue injuries of knees. The hypothesis of this study is that parameters of CT imaging can predict intra-articular soft-tissue injuries. PATIENTS AND METHODS: Patients who underwent arthroscopically assisted reduction and internal fixation (ARIF) for acute tibial plateau fractures performed by a single orthopedic surgeon between 2005 and 2015 were included in this retrospective study. Patients with concomitant ipsilateral femoral fractures, who had received revision surgery or who had undergone index surgery more than 30days from the event were excluded...
March 2017: Injury
https://www.readbyqxmd.com/read/28164061/arthroscopic-meniscectomy-and-meniscoplasty-for-a-torn-discoid-medial-meniscus-case-report-surgical-technique-and-literature-review
#20
Gokhale Nikhil Abhay, Samant Ashwin, Shahane Sunil, Kapopara Hardik
INTRODUCTION: Normal menisci of the knee are semilunar structures. Sometimes, a meniscus may be found to be thickened and disc like and is called a discoid meniscus. Such a discoid variant is usually found in the lateral meniscus. Its occurrence in the medial meniscus is extremely rare. CASE REPORT: We report a case of an 18-year-old female, who presented to us with knee pain and was found to have a discoid medial meniscus with a tear. We operated on her arthroscopically and performed meniscectomy and meniscoplasty...
September 2016: Journal of Orthopaedic Case Reports
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