569 results match your criteria Discoid Meniscus


Automatic Discoid Lateral Meniscus Diagnosis from Radiographs Based on Image Processing Tools and Machine Learning.

J Healthc Eng 2021 20;2021:6662664. Epub 2021 Apr 20.

The Digital ART Lab of School of Software, Shanghai JiaoTong University, Shanghai 200240, China.

The aim of the present study is to build a software implementation of a previous study and to diagnose discoid lateral menisci on knee joint radiograph images. A total of 160 images from normal individuals and patients who were diagnosed with discoid lateral menisci were included. Our software implementation includes two parts: preprocessing and measurement. Read More

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Discoid meniscus in human fetuses: A systematic review.

Knee 2021 May 1;30:205-213. Epub 2021 May 1.

Orthopedic Department, San Gerardo Hospital, University of Milano-Bicocca, Monza, Italy; Transalpine Center of Pediatric Sports Medicine and Surgery, University of Milano-Bicocca - Hospital Couple Enfant, Monza (Italy), Grenoble, France; School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy.

Background: Discoid meniscus (DM) is a rare variant of regular knee anatomy. Compared to standard meniscus it is thicker and abnormal in shape; these characteristics make it more prone to tear. It is a congenital defect whose correct etiology is still debated and far from being clarified. Read More

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Pediatric discoid meniscus: can magnetic resonance imaging features coupled with clinical symptoms predict the need for surgery?

Pediatr Radiol 2021 May 4. Epub 2021 May 4.

Department of Radiology, Northwestern University Feinberg School of Medicine, 676 N. St. Clair, Suite 800, Chicago, IL, 60611, USA.

Background: Magnetic resonance imaging (MRI) criteria for evaluating discoid meniscus is limited in the pediatric population.

Objective: To assess MRI features of intact discoid meniscus and correlate with clinical outcomes.

Materials And Methods: In this institutional review board (IRB)-approved retrospective cohort study, knee MRIs at our institution from 2008 to 2019 were reviewed. Read More

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Evaluation of knee bone morphology in juvenile patients with complete discoid lateral meniscus using magnetic resonance imaging.

Arch Orthop Trauma Surg 2021 Apr 21. Epub 2021 Apr 21.

Department of Orthopaedic Surgery, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka, 545-8585, Japan.

Purpose: The characteristic two-dimensional bone morphology in patients with a discoid lateral meniscus (DLM) has been described. However, the associated three-dimensional imaging findings have not been characterized. This study was performed to identify differences in the knee bone morphology between juvenile patients with a DLM and those with a normal meniscus using magnetic resonance (MR) imaging. Read More

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Discoid lateral meniscus: current concepts.

J ISAKOS 2021 01 16;6(1):14-21. Epub 2020 Sep 16.

Orthopedic Surgery, Stockholm South Hospital, Karolinska Institutet, Stockholm, Sweden.

The discoid meniscus is a congenital morphological abnormality encountered far more commonly on the lateral than the medial side. The discoid lateral meniscus (DLM) is more prevalent in Asia with an incidence of 10%-13%, than in the Western world with an incidence of 3%-5%. DLM can be bilateral in more than 80% cases. Read More

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January 2021

Arthroscopic Saucerization of a Symptomatic Posterior Horn Tear in a Discoid Medial Meniscus.

Ochsner J 2021 ;21(1):115-118

The University of Queensland Faculty of Medicine, Ochsner Clinical School, New Orleans, LA.

Discoid medial meniscus is an extremely rare congenital anatomic variant with an estimated incidence of 0.12%. Arthroscopic meniscal saucerization and repair are reserved for symptomatic tears only. Read More

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January 2021

Narrative Review - Knee Pain in the Pediatric Athlete.

Curr Rev Musculoskelet Med 2021 Apr 5. Epub 2021 Apr 5.

Department of Physical Medicine and Rehabilitation, Stanford University, 500 Jefferson Avenue #823, Redwood City, CA, 94063, USA.

Purpose Of Review: This review article seeks to highlight common youth athlete knee conditions due to overuse or trauma and elucidate differences from the adult populations.

Recent Findings: Overuse conditions presented include apophysitis, osteochondritis dissecans plica syndrome, and discoid meniscus. Traumatic conditions presented include patellar instability, patellar sleeve fracture, and patellofemoral osteochondral fractures. Read More

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Meniscus Repair With Anterior Cord Release for Peripheral Tear Type of Discoid Lateral Meniscus.

Arthrosc Tech 2021 Feb 1;10(2):e353-e357. Epub 2021 Feb 1.

Department of Orthopaedic Surgery, Sapporo Maruyama Orthopaedic Hospital, Chuo-ku, Sapporo, Hokkaido, Japan.

With improvement in arthroscopic techniques, partial meniscectomy with repair for symptomatic discoid lateral meniscus (DLM) has been the preferred treatment to restore meniscal function. It was reported that DLM exhibited deformation and extrusion shortly after saucerization with repair. Therefore it is desirable to minimize removal of the DLM. Read More

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February 2021

Predictive signs of peripheral rim instability with magnetic resonance imaging in no-shift-type complete discoid lateral meniscus.

Skeletal Radiol 2021 Mar 7. Epub 2021 Mar 7.

Department of Orthopaedic Surgery, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka, 545-8585, Japan.

Purpose: To investigate the associations between the preoperative MRI findings suggestive of meniscal instability and the intraoperative finding of peripheral rim instability (PRI) in patients with complete discoid lateral meniscus (CDLM) of no-shift-type, which was identified as the peripheral portion was not separated from the capsule.

Methods: The records of 56 patients diagnosed with no-shift-type CDLM who underwent arthroscopic surgery were reviewed. We evaluated MRI findings of anterior parameniscal soft-tissue edema, linear fluid signal at the anterior meniscal margin, bulging of the meniscal margin, absence of popliteomeniscal fascicles, and hiatus widening on routine MRI. Read More

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Editorial Commentary: The Pediatric Knee: Ultrasound Could Replace Magnetic Resonance Imaging for Evaluating a Discoid Lateral Meniscus.

Arthroscopy 2021 03;37(3):891-892

Magnetic resonance imaging has been referred to as the gold standard diagnostic modality for meniscal pathology in the adult knee. However, there are multiple issues with reliance on magnetic resonance imaging for evaluating the meniscus in children. Diagnostic accuracy for meniscus pathology in children is not as high as with adults. Read More

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Anatomical knee variables result in worse outcomes of lateral meniscal allograft transplantation with discoid lateral menisci than with nondiscoid lateral menisci.

Knee Surg Sports Traumatol Arthrosc 2021 Mar 3. Epub 2021 Mar 3.

Department of Sports Medicine and Rehabilitation, Peking University Shenzhen Hospital, 1120 Lianhua Road, Futian District, Shenzhen, 518036, Guangdong, China.

Purpose: To compare the clinical results of meniscal allograft transplantation (MAT) between patients with discoid lateral meniscus (DLM) and non-DLM (NDLM) and to analyse whether anatomical deformities cause worse clinical results in DLM patients.

Methods: Patients who underwent unilateral MAT from 2005 to 2017, including 115 patients with DLMs or NDLMs, were included in this study. Clinical outcomes [International Knee Documentation Committee (IKDC) scores, Lysholm scores, Tegner scores, and visual analogue scale (VAS) scores] and radiographic and MRI data were assessed. Read More

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Multivariate ordered logistic regression analysis of the postoperative effect of symptomatic discoid lateral meniscus.

Arch Orthop Trauma Surg 2021 Feb 22. Epub 2021 Feb 22.

Department of Orthopedic Surgery, West China Hospital, Sichuan University, No.37, Guoxue Alley, Chengdu, 610041, China.

Introduction: The postoperative effect of arthroscopy in the treatment of symptomatic discoid lateral meniscus (DLM) varies greatly among individuals. Therefore, this study aims to investigate the factors affecting the postoperative outcomes of symptomatic DLM.

Materials And Methods: According to the inclusion and exclusion criteria, patients with symptomatic single-knee DLM who underwent arthroscopic surgery at our hospital from 9/2008 to 9/2015 were included. Read More

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February 2021

Editorial Commentary: Saucerization Is Superior to Total Meniscectomy in Patients With Symptomatic Discoid Lateral Meniscus.

Arthroscopy 2021 02;37(2):655-656

Editorial Board.

Current treatment recommendations favor meniscal rim preservation through partial meniscectomy with repair when indicated in patients with symptomatic discoid lateral menisci. Although many studies have shown the importance of meniscal rim preservation, some have shown that suture repair does not yield improved outcomes over partial meniscectomy without repair, considering the cost of repair and lack of available data. However, partial meniscectomy with repair is essential when peripheral instability is seen in patients with symptomatic discoid lateral menisci. Read More

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February 2021

Anatomy, magnetic resonance and arthroscopy of the popliteal hiatus of the knee: normal aspect and pathological conditions.

EFORT Open Rev 2021 Jan 4;6(1):61-74. Epub 2021 Jan 4.

IIa Clinica Ortopedica e Traumatologica, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy.

The popliteal hiatus is a complex region, formed by the confluence of various structures connecting the meniscus, popliteal tendon, tibia and fibula.The main structures that can be found are the three popliteomeniscal fascicles (anterior, postero-inferior and postero-superior), the lateral and posterior meniscotibial ligaments, the popliteofibular ligament and the meniscofibular fascicle.These structures can be identified in most cases using magnetic resonance imaging, and their 'static' assessment can be performed. Read More

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January 2021

Clinical presentation, MRI and clinical outcome scores do not accurately predict an important meniscal tear in a symptomatic discoid meniscus.

Knee Surg Sports Traumatol Arthrosc 2021 Jan 2. Epub 2021 Jan 2.

Sheffield Children's Hospital, Sheffield Children's NHS Foundation Trust, Clarkson Street, Sheffield, S10 2TH, UK.

Purpose: Discoid menisci can be symptomatic from instability or a tear. A torn discoid meniscus is likely to require repair to preserve meniscal function and should not be missed. This is the first study to evaluate a range of pre-operative methods to predict the likelihood of a torn discoid meniscus. Read More

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January 2021

Meniscal pathology in children and adolescents.

Authors:
Loïc Geffroy

Orthop Traumatol Surg Res 2021 Feb 13;107(1S):102775. Epub 2020 Dec 13.

Chirurgie orthopédique et traumatologique, polyclinique Atlantique, avenue Claude-Bernard, 44800 Saint-Herblain, France. Electronic address:

The menisci play a key role in knee biomechanics and long-term cartilage protection. Preserving the meniscus is thus a major functional consideration in children and adolescents. In normal menisci, lesions are traumatic in origin. Read More

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February 2021

Discoid Labral Meniscus Covering Two-Thirds of a Type C Glenoid: A Case Report.

Orthop Surg 2021 Feb 9;13(1):342-346. Epub 2020 Dec 9.

Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.

Background: Glenoid morphology and dysplasia have been extensively described in conjunction with shoulder arthritis. Dysplastic glenoids have a substantial inherent retroversion, a deficient posteroinferior rim, a short scapular neck, and an inferior inclination of the joint surface. The effect of dysplasia on fracture surgery has not been reported to the same extent. Read More

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February 2021

Can an injured discoid lateral meniscus be returned to the correct anatomic position and size of the native lateral meniscus after surgery?

Knee 2021 Jan 4;28:25-35. Epub 2020 Dec 4.

Department of Orthopaedic Surgery, Kyung Hee University Hospital at Gangdong, Seoul, Republic of Korea. Electronic address:

Background: No previous studies have compared the position and size of the remaining discoid lateral meniscus (DLM) with that of a normal lateral meniscus. This study aimed to evaluate the postoperative position and size of DLM compared with that of normal controls using magnetic resonance imaging (MRI).

Methods: This retrospective study involved 52 symptomatic complete type DLMs (discoid group) who underwent arthroscopic surgery and 50 normal controls (control group). Read More

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January 2021

Evaluation of the Peripheral Rim Instability of the Discoid Meniscus in Children by Using Weight-Bearing Magnetic Resonance Imaging.

J Comput Assist Tomogr 2021 Mar-Apr 01;45(2):263-268

From the College of Medical Imaging, Shanxi Medical University.

Objective: The aim of the study was to assess the peripheral rim instability and the clinical value of discoid meniscus.

Methods: We retrospectively studied 79 magnetic resonance imaging (MRI) examinations of discoid meniscus from May 2017 to September 2019. The patient symptoms and physical findings were documented. Read More

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Clinical efficacy of arthroscopy in the treatment of discoid meniscus injury and related risk factors for postoperative pain.

Ann Palliat Med 2020 Nov 16;9(6):4002-4009. Epub 2020 Nov 16.

Department of Orthopedic, Affiliated Ruijin Hospital Luwan branch, Shanghai Jiao Tong University School of Medicine, Shanghai, China.

Background: Discoid meniscus is an abnormal meniscus of the knee joint. This study aimed to analyze the clinical efficacy of arthroscopy in the treatment of discoid meniscus injury, and determine the related risk factors for postoperative pain.

Methods: A total of 80 patients with a discoid meniscus injury who were diagnosed and treated in our hospital from May 2017 to May 2018 were selected. Read More

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November 2020

Discoid lateral meniscus: importance, diagnosis, and treatment.

J Exp Orthop 2020 Oct 12;7(1):81. Epub 2020 Oct 12.

Department of Orthopedic Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, gangnam-gu, Seoul, 135-710, South Korea.

Discoid lateral meniscus (DLM) is a common anatomic variant in the knee typically presented in young populations, with a greater incidence in the Asian population than in other populations. As DLM is a congenital anomaly, the ultrastructural features and morphology differ from those of the normal meniscus, potentially leading to meniscal tears. Snapping and pain are common symptoms, with occasional limitations of extension, in patients with DLM. Read More

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October 2020

Saucerization and Repair of Discoid Lateral Menisci With Peripheral Rim Instability: Intermediate-term Outcomes in Children and Adolescents.

J Pediatr Orthop 2021 Jan;41(1):23-27

Children's Healthcare of Atlanta, Atlanta, GA.

Background: Historically, total meniscectomy was recommended as the treatment for a symptomatic discoid meniscus. Improved meniscal repair techniques and inferior long-term outcomes associated with meniscectomy have resulted in a trend toward meniscal preservation, with saucerization and repair of meniscocapsular tears. Reoperation rates after treatment of torn discoid menisci vary, with some series reporting high rates of reinjury and reoperation. Read More

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January 2021

Magnetic Resonance Imaging T2 Relaxation Times of Articular Cartilage Before and After Arthroscopic Surgery for Discoid Lateral Meniscus.

Arthroscopy 2021 02 30;37(2):647-654. Epub 2020 Sep 30.

Department of Orthopaedic Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan.

Purpose: To quantitatively evaluate degeneration of articular cartilage using magnetic resonance imaging (MRI) T2 mapping before and after arthroscopic surgery for discoid lateral meniscus (DLM).

Methods: We retrospectively reviewed the medical records of patients who underwent arthroscopic reshaping surgery for symptomatic DLM from September 2013 to October 2017 and who had undergone follow-up for ≥2 years. MRI T2 relaxation examinations had been performed preoperatively and at 3, 6, 12, and 24 months postoperatively. Read More

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February 2021

Ring-Shaped Lateral Meniscus Without a Bony Anterior Root Attachment.

Orthopedics 2021 Jan 1;44(1):e146-e147. Epub 2020 Oct 1.

The discoid lateral meniscus has been well described. The ring-shaped lateral meniscus was not originally included in the classification systems but has been reported in the literature several times. This article describes a unique variation of the ring lateral meniscus in which the anterior root attachment was to the anterior cruciate ligament and rendered unstable with preparation of the anterior cruciate ligament reconstruction tunnels. Read More

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January 2021

Demographics and Epidemiology of Discoid Menisci of the Knee: Analysis of a Large Regional Insurance Database.

Orthop J Sports Med 2020 Sep 17;8(9):2325967120950669. Epub 2020 Sep 17.

Department of Orthopedic Surgery, Los Angeles Medical Center, Kaiser Permanente, Los Angeles, California, USA.

Background: A discoid meniscus is a morphological variant of normal knee joint meniscus shape and ultrastructure that can lead to traumatic tearing of this tissue and early joint osteoarthritis.

Purpose/hypothesis: The purpose of this study was to determine the prevalence of discoid menisci in a large, ethnically diverse regional cohort and to evaluate possible risk factors. The hypothesis was that there would be no difference in the epidemiological distribution of discoid menisci based on ethnicity or sex. Read More

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September 2020

A Reliable, Ultrasound-Based Method for the Diagnosis of Discoid Lateral Meniscus.

Arthroscopy 2021 03 28;37(3):882-890. Epub 2020 Sep 28.

Department of Orthopedic Surgery, West China Hospital, Sichuan University, Chengdu, China; Department of Ultrasound, West China Hospital, Sichuan University, Chengdu, China. Electronic address:

Purpose: To explore the feasibility and validity of ultrasound in the diagnosis of discoid lateral meniscus (DLM) by comparing quantitatively the morphologic difference between DLM and normal lateral meniscus.

Methods: This study was designed to develop and validate the ultrasound diagnostic criterion for DLM. In the development stage (July 2018 to June 2019), data from 180 subjects were used to derive the ultrasound diagnostic criterion, including 90 patients diagnosed as DLM by magnetic resonance imaging (DLM group) and 90 matched controls diagnosed as normal lateral meniscus diagnosed by magnetic resonance imaging (control group). Read More

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Osteochondritis Dissecans of the Tibial Plateau in Children and Adolescents: A Case Series.

Orthop J Sports Med 2020 Aug 26;8(8):2325967120941380. Epub 2020 Aug 26.

Department of Orthopaedic Surgery, Division of Sports Medicine, Boston Children's Hospital, Boston, Massachusetts, USA.

Background: Osteochondritis dissecans (OCD) of the knee is a relatively well-known condition, most commonly arising in the femoral condyle. Lesions arising in the tibial plateau are rarely described.

Purpose: To present a case series of OCD lesions of the tibial plateau. Read More

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Discoid meniscus: current concepts.

EFORT Open Rev 2020 Jul 1;5(7):371-379. Epub 2020 Aug 1.

Universidad Austral de Chile, Valdivia, Chile.

Discoid meniscus is the most frequent congenital malformation of the menisci, and primarily affects the lateral meniscus; it is highly prevalent in the Asian population.The anatomic, vascular, and ultrastructural features of the discoid meniscus make it susceptible to complex tears.Discoid meniscus anomalies are described according to their shape; however, there is consensus that peripheral stability of the meniscus should also be defined. Read More

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Correction to: The postoperative shorter meniscal width was the risk factor of lateral meniscal extrusion in the middle portion for juvenile and adolescent knees with discoid lateral meniscus.

Knee Surg Sports Traumatol Arthrosc 2020 Aug 20. Epub 2020 Aug 20.

Division of Orthopedic Surgery, Department of Regenerative and Transplant Medicine, Niigata University Graduate School of Medical and Dental Science, 1-757 Asahimachi-dori Chuo-ku, Niigata, Niigata, 951-8510, Japan.

Authors would like correct the errors in figure. Read More

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Factors influencing postoperative outcomes in patients with symptomatic discoid lateral meniscus.

BMC Musculoskelet Disord 2020 Aug 15;21(1):551. Epub 2020 Aug 15.

Department of Orthopedic Surgery, West China Hospital, Sichuan University, No.37, Guoxue Alley, Chengdu, 610041, China.

Background: Due to its abnormal morphology and ultrastructure, discoid lateral meniscus (DLM) is prone to tear and degeneration, leading to clinical symptoms. Arthroscopy is the main treatment for symptomatic DLM; however, postoperative outcomes vary widely due to the effects of diverse factors. This research aims to explore the factors influencing postoperative outcomes of symptomatic DLM. Read More

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