613 results match your criteria Discoid Meniscus


Isolated meniscus injuries in skeletally immature children and adolescents: state of the art.

J ISAKOS 2022 Feb 11;7(1):19-26. Epub 2022 Jan 11.

Department of Orthopaedic Surgery, Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar. Electronic address:

The prevalence of isolated meniscal injuries in children and adolescents is low; however, we see an increase mainly due to intensified sports-related activities at an early age. A meniscal repair should be attempted whenever possible as children present with increased meniscal healing potential. The diagnosis and management of meniscal tears involve both patient factors and tear characteristics: size, anatomical location and associated injuries. Read More

View Article and Full-Text PDF
February 2022

Association of Postoperative Lateral Meniscal Extrusion With Cartilage Degeneration on Magnetic Resonance Imaging After Discoid Lateral Meniscus Reshaping Surgery.

Orthop J Sports Med 2022 May 4;10(5):23259671221091997. Epub 2022 May 4.

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

Background: Although arthroscopic reshaping surgery for a discoid lateral meniscus (DLM) has good clinical results, it cannot completely prevent degeneration. The degree of DLM extrusion associated with degenerative changes is unclear.

Purpose/hypothesis: To measure meniscal extrusion preoperatively and postoperatively in patients who underwent DLM-reshaping surgery and examine factors associated with knee articular cartilage degeneration. Read More

View Article and Full-Text PDF

Magnetic Resonance of Normal Variants of the Pediatric Knee.

Magn Reson Imaging Clin N Am 2022 May 13;30(2):325-338. Epub 2022 Apr 13.

University of Wisconsin School of Medicine and Public Health, E3/366, 600 Highland Avenue, Madison, WI 53792-3252, USA.

Accurate diagnosis and management of pediatric patients undergoing magnetic resonance (MR) imaging necessitates familiarity with the normal changes of skeletal maturation and the spectrum of normal variation seen in children. This article reviews key patterns of normal bone and cartilage development. The most common and important variants of bone, cartilage, and soft tissue structures encountered on pediatric MR studies are discussed. Read More

View Article and Full-Text PDF

Three-dimensional Morphological Assessment of Adult Knee Menisci: A Computed Tomography-based Approach.

In Vivo 2022 May-Jun;36(3):1416-1423

Department of Neuroscience, Imaging and Clinical Sciences, G. d'Annunzio, University of Chieti-Pescara, Chieti, Italy.

Aim: The present study aimed to examine meniscal morphology in an adult population in vivo through computed tomographic images, including research into morphological differences related to osteoarthritis, ageing and the meniscal location within the knee joint and a proposal for a supplementation of the current morphological classification.

Materials And Methods: Computed tomographic images of the knee for 118 patients were retrieved from the picture archiving and communication system of our Institute and included in this retrospective study. Each meniscus was subject to manual segmentation and converted into three-dimensional surfaces. Read More

View Article and Full-Text PDF

Evaluation of morphological characteristics for incomplete discoid medial meniscus with an oversized posterior segment.

J Orthop Surg Res 2022 Apr 20;17(1):245. Epub 2022 Apr 20.

Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan.

Background: A discoid medial meniscus is rare in comparison with a discoid lateral meniscus. We encountered a new type of incomplete discoid with an oversized posterior segment. Therefore, this study aimed to report cases of medial meniscus with an oversized posterior segment and analyze the morphological characteristics by comparing them to cases with a discoid medial meniscus and normal medial meniscus. Read More

View Article and Full-Text PDF

Comparison of the Healing Outcomes of Conservative Treatment for Stable Juvenile Osteochondritis Dissecans of the Lateral Femoral Condyle With Normal Lateral Meniscus and Incomplete Discoid Lateral Meniscus.

J Pediatr Orthop 2022 Mar 29. Epub 2022 Mar 29.

Department of Orthopaedic Surgery, Shimada Hospital, Habikino.

Background: This study aimed to compare the healing outcomes of conservative treatment for osteochondritis dissecans (OCD) of the lateral femoral condyle with normal lateral meniscus and incomplete discoid lateral meniscus (DLM).

Methods: Forty-four knees in 37 juvenile patients (mean age 9.9 y) with stable OCD and whose lateral meniscus shape was normal or incomplete DLM were enrolled. Read More

View Article and Full-Text PDF

[Diagnostic value of ultrasound in the discoid lateral meniscus of the knee].

Zhongguo Gu Shang 2022 Mar;35(3):243-8

Sports Medicine Center, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China.

Objective: Based on the anatomical differences between discoid lateral meniscus(DLM) and normal lateral meniscus (NLM), this study aims to setting up the ultrasound examination parameters to distinguish DLM and NLM and explore the diagnostic value of these parameters on DLM.

Methods: According to the inclusion, exclusion and matching criteria, 66 DLM patients(DLM group) and 132 NLM patients with other knee joint diseases(NLM group), hospitalized from October 2019 to June 2020, were included in this study. There were 18 males and 48 females in the DLM group, ranging in age from 3 to 60 years old, with a mean of (36. Read More

View Article and Full-Text PDF

Regeneration of the lateral discoid meniscus after arthroscopic saucerization in an adult patient undergoing high tibial osteotomy: A case report.

Clin Case Rep 2022 Mar 15;10(3):e05574. Epub 2022 Mar 15.

Joint & Arthritis Research, Department of Orthopaedic Surgery Himchan Hospital Seoul Republic of Korea.

Arthroscopic saucerization of the lateral discoid meniscus is considered due to an increase in the load of the lateral compartment after high tibial osteotomy (HTO). We report a case of lateral discoid meniscus regeneration after arthroscopic saucerization in a middle-aged female patient who underwent HTO. Read More

View Article and Full-Text PDF

T2 Relaxation Time Changes in the Distal Femoral Condylar Cartilage of Children and Young Adults with Discoid Meniscus.

Cartilage 2022 Jan-Mar;13(1):19476035221085142

Department of Radiology and Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.

Objective: To investigate compositional changes in the distal femoral condylar cartilage (FCC) of children and young adults with and without discoid meniscus by T2 relaxation time mapping.

Design: We retrospectively reviewed knee magnetic resonance images including sagittal T2 maps of distal FCC performed in patients with or without discoid meniscus. Combined meniscal pathology such as degeneration or tears was also reviewed. Read More

View Article and Full-Text PDF

Reliability of a New Arthroscopic Discoid Lateral Meniscus Classification System: A Multicenter Video Analysis.

Am J Sports Med 2022 Apr 2;50(5):1245-1253. Epub 2022 Mar 2.

Investigation performed at Seattle Children's Hospital, Seattle, Washington, USA.

Background: The discoid lateral meniscus (DLM) is one of the most common congenital anomalies of the knee. The pathomorphology of DLM varies. Current classification systems are inadequate to describe the spectrum of abnormality. Read More

View Article and Full-Text PDF

Single-cell RNA sequencing reveals the cell types heterogenicity of human discoid lateral meniscus cells.

J Cell Physiol 2022 Feb 27. Epub 2022 Feb 27.

Department of Orthopedics, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China.

Discoid lateral meniscus (DLM) is more prone to injury than a normally shaped meniscus. No study has compared the gene expression and cell heterogeneity between discoid and normal menisci. We aimed to identify specific cell clusters and their marker genes in discoid meniscus, thereby providing a theoretical basis for the treatment and etiology of DLM. Read More

View Article and Full-Text PDF
February 2022

Surgical Repair of Symptomatic Wrisberg Variant Discoid Lateral Mensicus with Pull-Out Repair and Capsulodesis.

Arthrosc Tech 2022 Jan 22;11(1):e61-e68. Epub 2021 Dec 22.

Center for Stem Cell and Regenerative Medicine, Tokyo Medical and Dental University, Tokyo, Japan.

Wrisberg variant discoid lateral meniscus (DLM) is a congenital anatomic variation of the meniscus in the knee joint, which is an uncommon type of the DLM. We present a surgical technique in a case of symptomatic Wrisberg variant DLM. To improve the instability due to the lack of the posterior attachment of meniscotibial ligament, the posterior portion of DLM was attached to the insertion site of normal LM posterior root using pull-out repair technique. Read More

View Article and Full-Text PDF
January 2022

Epidemiological Study of the Discoid Meniscus: Investigating Demographic-Based Predictors in Large-Scale Claims Database.

Cureus 2021 Nov 30;13(11):e20050. Epub 2021 Nov 30.

Orthopaedic Surgery, Stanford University School of Medicine, Lucile Packard Children's Hospital, Palo Alto, USA.

Purpose To better define the epidemiology of discoid meniscus by analyzing a large, national database for incidence rates and associations with demographic variables. Methods From Optum's Clinformatics® Data Mart Database, incidence rates and proportions of reported racial categories - Asian, Black, Hispanic, and Caucasian - of diagnosed discoid meniscus cases (n = 198) in the study population of patients receiving arthroscopic meniscectomy or repair procedures (n = 60,042) were calculated and compared via chi-square tests to the total population. To control for age, sex, and socioeconomic factors such as income, multivariable logistic regression analysis was performed. Read More

View Article and Full-Text PDF
November 2021

The Relationship Between Discoid Meniscus and Articular Cartilage Thickness: A Quantitative Observational Study With MRI.

Orthop J Sports Med 2021 Dec 17;9(12):23259671211062258. Epub 2021 Dec 17.

Rothman Institute, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.

Background: Several cadaveric imaging studies have demonstrated that the articular cartilage thickness on the tibial plateau varies depending on coverage by native meniscal tissue. These differences are thought to partially contribute to the rates of cartilage degeneration and development of osteoarthritis after meniscectomy. Because there is greater tibial plateau coverage with meniscal tissue in the setting of a discoid meniscus, these findings may also have implications for the long-term health of the knee after saucerization of a torn discoid meniscus. Read More

View Article and Full-Text PDF
December 2021

Meniscus Allograft Transplantation Obtained From Adult Patients Undergoing Total Knee Arthroplasty May be Used for Younger Patients After Lateral Discoid Meniscus Meniscectomy.

Arthrosc Sports Med Rehabil 2021 Dec 10;3(6):e1679-e1685. Epub 2021 Sep 10.

Department of Orthopaedic Surgery, Hirosaki University Graduate School of Medicine, Hirosaki, Japan.

Purpose: To investigate the clinical outcomes following meniscus allograft transplantation (MAT) to replace removed discoid lateral meniscus using intact lateral meniscus obtained from patients undergoing total knee arthroplasty for medial compartment osteoarthritis.

Methods: Pediatric patients who underwent MAT secondary to partial or total meniscectomy due to discoid lateral meniscus between August 2010 and November 2018 were identified. Lateral menisci with bone blocks were transplanted arthroscopically. Read More

View Article and Full-Text PDF
December 2021

[Risk factors for the postoperative effect of symptomatic discoid lateral meniscus after arthroscopy].

Zhongguo Gu Shang 2021 Dec;34(12):1114-20

Department of Orthopaedics, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China.

Objective: To explore the influencing factors of the postoperative effect of arthroscopic treatment of symptomatic discoid lateral meniscus (DLM).

Methods: From September 2008 to September 2015, patients with symptomatic DLM treated by arthroscopic surgery were retrospectively analyzed. The knee function was evaluated by Lysholm scoring system. Read More

View Article and Full-Text PDF
December 2021

Utility of Stability and Tear Location in a Classification System for Discoid Meniscus Surgical Planning.

J Pediatr Orthop 2022 Jan;42(1):e50-e54

Department of Orthopaedic Surgery and Sports Medicine.

Background: Despite the presence of multiple classification systems for discoid meniscus, no system has yet to demonstrate utility in predicting the need for meniscal repair. The purpose of this study was to correlate characteristics associated with meniscal repair and propose a model that can inform preoperative planning and initial counseling of surgical plans and expectations.

Methods: Medical and operative records of 434 knees with lateral discoid meniscus in children and adolescents treated between 1991 and 2016 were reviewed retrospectively to determine the surgical procedure performed (saucerization with or without meniscal repair), discoid meniscal morphology and stability, and location and type of any associated tear. Read More

View Article and Full-Text PDF
January 2022

Arthroscopic Saucerization With Inside-Out Repair and Anterocentral Shift of a Discoid Lateral Meniscus With Retention of Adequate Volume of Residual Meniscus.

Arthrosc Tech 2021 Nov 9;10(11):e2553-e2557. Epub 2021 Nov 9.

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

Abstract: Preservation of the meniscus has been shown to influence the progression of osteoarthritic changes in the knee. Discoid lateral meniscus (DLM) is classified on the basis of the presence and location of instability resulting from deficient capsular attachments. Recently, meniscal stabilization after saucerization was recommended in cases of DLM to preserve the meniscus shape and avoid the progression of osteoarthritis. Read More

View Article and Full-Text PDF
November 2021

Radial Width of the Lateral Meniscus at the Popliteal Hiatus: Relevance to Saucerization of Discoid Lateral Menisci.

Am J Sports Med 2022 01 15;50(1):138-141. Epub 2021 Nov 15.

Packard Children's Health, School of Medicine, Stanford University, Stanford, CA, USA.

Background: A discoid lateral meniscus (DLM) is a congenital anomaly of the knee in which the lateral meniscus has an "O" shape and contains irregular, abnormal collagenous tissue. A DLM can cause mechanical symptoms and pain. Treatment of a symptomatic DLM is arthroscopic saucerization to reshape the meniscus to a more normal contour. Read More

View Article and Full-Text PDF
January 2022

Nineteen percent of meniscus repairs are being revised and failures frequently occur after the second postoperative year: a systematic review and meta-analysis with a minimum follow-up of 5 years.

Knee Surg Sports Traumatol Arthrosc 2021 Oct 20. Epub 2021 Oct 20.

Department of Orthopaedic and Trauma Surgery, Vienna General Hospital, Medical University of Vienna, Vienna, Austria.

Purpose: Meniscus repair has gained increasing interest over the last two decades as loss of meniscus tissue predisposes to early onset knee arthritis. Although there are many reports of meniscus repair outcome in short-term studies, data on the long-term outcome of meniscus repair are still scarce. The purpose of this meta-analysis was to evaluate the overall failure rate of meniscus repair with a minimum follow-up of 5 years. Read More

View Article and Full-Text PDF
October 2021

[Arthroscopic classification and management for the popliteal hiatus of the lateral meniscus tears].

Beijing Da Xue Xue Bao Yi Xue Ban 2021 Oct;53(5):891-895

Department of Orthopaedic Surgery, Xiamen University Affiliated Southeast Hospital, Zhangzhou 363000, Fujian, China.

Objective: To bring forward an arthroscopic classification of the popliteal hiatus of the lateral meniscus (PHLM) tears and to assess the effects of arthroscopic all-inside repair with suture hook in management of such injuries.

Methods: This study involved 146 patients who underwent arthroscopic operation because of PHLM tears from April 2014 to October 2017, eliminating the patients who had discoid lateral meniscus. There were 81 males and 65 females, with 54 left knees and 92 right knees. Read More

View Article and Full-Text PDF
October 2021

An adult case of spontaneous healing of concurrent osteochondritis dissecans of the lateral femoral condyle after saucerization with meniscal repair for discoid lateral meniscus: A case report.

Int J Surg Case Rep 2021 Oct 23;87:106427. Epub 2021 Sep 23.

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

Background: The treatment strategy for osteochondritis dissecans (OCD) with discoid lateral meniscus (DLM) in adults remains unclear.

Case Presentation: A 22-year-old man presented with left knee pain after spraining his knee. Physical examination revealed lateral joint line tenderness and a positive McMurray test. Read More

View Article and Full-Text PDF
October 2021

Update on imaging of the discoid meniscus.

Skeletal Radiol 2022 May 21;51(5):935-956. Epub 2021 Sep 21.

Royal National Orthopaedic Hospital, Brockley Hill Stanmore, London, HA7 4LP, UK.

Discoid menisci represent a range of morphological meniscal variants, most commonly involving the lateral meniscus. Clinical presentation ranges from an asymptomatic incidental finding to snapping, pain, swelling and reduced range of knee movement. Symptomatic presentation of discoid menisci is usually due to meniscal tears and instability resulting from abnormal meniscal morphology and ultrastructure, with absent peri-meniscal ligamentous and meniscocapsular attachments characteristic of the Wrisberg sub-type. Read More

View Article and Full-Text PDF

Discoid Lateral Meniscus Saucerization and Treatment of Intrasubstance Degeneration Through an Accessory Medial Portal Using a Small Arthroscope.

Arthrosc Tech 2021 Sep 23;10(9):e2165-e2171. Epub 2021 Aug 23.

University of Connecticut Health and School of Medicine, Department of Orthopedic Surgery, Farmington, Connecticut, U.S.A.

Discoid lateral meniscus (DLM) is a rare meniscal variant characterized by an increased amount of meniscal tissue that resembles the shape of a disc as opposed to the typical crescent shape of the lateral meniscus. Surgical intervention is recommended for symptomatic DLM with persistent pain, mechanical symptoms, or motion impairment. The technique described is a reliable and reproducible method to identify and treat intrasubstance degeneration (ID) in the setting of DLM. Read More

View Article and Full-Text PDF
September 2021

A Useful MRI Classification for Symptomatic Discoid Lateral Meniscus.

Knee Surg Relat Res 2021 Sep 9;33(1):31. Epub 2021 Sep 9.

Department of Orthopedic Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro Gangnam-gu, Seoul, 06351, South Korea.

Purpose: The purpose of this study is to classify the discoid lateral meniscus (DLM) according to the signal and shape in magnetic resonance imaging (MRI), and to provide information not only in diagnosis but also in treatment.

Materials And Methods: We reviewed 162 cases who diagnosed with DLM by MRI and underwent arthroscopic procedures from April 2010 to March 2018. Three observers reviewed MRI findings of all cases and predicted arthroscopic tear using three MRI criteria (criterion 1,2 and 3). Read More

View Article and Full-Text PDF
September 2021

Two positioned MRI can visualize and detect the location of peripheral rim instability with snapping knee in the no-shift-type of complete discoid lateral meniscus.

Arch Orthop Trauma Surg 2021 Sep 6. Epub 2021 Sep 6.

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

Introduction: We evaluated the efficacy of two positioned magnetic resonance imaging (MRI) for visualizing the snapping phenomenon and detecting peripheral rim instability (PRI) in no-shift-type complete discoid lateral meniscus (CDLM).

Materials And Methods: The records of 39 patients diagnosed with no-shift-type CDLM under routine MRI who underwent arthroscopic surgery were reviewed. The snapping phenomenon and meniscal shift on two positioned MRI in full extension and deep flexion were evaluated and calculated the agreement between these findings. Read More

View Article and Full-Text PDF
September 2021

[Pediatric knee arthroscopy. Three-year experience at a high specialty hospital in Mexico].

Acta Ortop Mex 2021 Jan-Feb;35(1):28-32

Unidad Médica de Alta Especialidad (UMAE) Hospital de Traumatología y Ortopedia de Puebla, Centro Médico Nacional «Gral. de Div. Manuel Ávila Camacho» del Instituto Mexicano del Seguro Social (IMSS).

Introduction: Diagnosis and management of congenital and traumatic articular ailments carry an additional problem in young people. Arthroscopy has improved treatment of these injuries, which are more frequent.

Objective: To describe the experience of arthroscopic handling in pediatric patients affected with knee disease, managed at a third level hospital in Puebla, Mexico. Read More

View Article and Full-Text PDF
September 2021

Morphological Changes in the Residual Meniscus After Reshaping Surgery for a Discoid Lateral Meniscus.

Am J Sports Med 2021 10 20;49(12):3270-3278. Epub 2021 Aug 20.

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

Background: Arthroscopic reshaping surgery is the first treatment option for a symptomatic discoid lateral meniscus (DLM) to preserve the peripheral rim. However, the degree of postoperative morphological change in the residual meniscus is unclear.

Purpose/hypothesis: The purpose of this study was to measure the meniscus after reshaping surgery for a DLM, to verify when the morphological change occurred, and to examine the related risk factors. Read More

View Article and Full-Text PDF
October 2021

Long-term Minimum 15-Year Follow-up After Lateral Discoid Meniscus Rim Preservation Surgery in Children and Adolescents.

J Pediatr Orthop 2021 Oct;41(9):e810-e815

Department of Orthopaedic Surgery and Sports Medicine, Boston Children's Hospital.

Background: Discoid meniscus is a congenital variant typically affecting the lateral meniscus of the knee. Historically, surgical intervention when symptomatic consisted of total meniscectomy; however, after degenerative changes were observed, current treatments now focus on rim preservation with arthroscopic saucerization and meniscal repair for instability, when indicated. The purpose of our study was to examine long-term patient-reported outcomes of lateral discoid meniscus (LDM) treated with meniscal-preserving techniques. Read More

View Article and Full-Text PDF
October 2021

MR- arthrography: anatomic variant from link between lateral meniscus and anterior and posterior cruciate ligaments. A case report and review of the literature.

Radiol Case Rep 2021 Oct 7;16(10):3012-3015. Epub 2021 Aug 7.

Columbus Clinic Center, Milano, Italy.

Menisci congenital anomalies are rare morphologic abnormalities including accessory meniscus, discoid meniscus, double-layered meniscus, hypoplastic meniscus and ring-shaped meniscus (RSM). In a 35 year-old male patient, MR arthrography showed a bridging accessory bundle connecting the anterior cruciate ligament and posterior cruciate ligament with the posterior horn of the lateral meniscus. Arthroscopic examination showed a fan-like obstacle embracing the posterior horn of the lateral meniscus. Read More

View Article and Full-Text PDF
October 2021