is discoid meniscus hereditary

Initially, the abnormal shape of DM was thought to result from a failure of central resorption of its intermediate form during . In some cases the entire meniscus needs to be excised due to UN repairable damage to the meniscus. The meniscus has a shocking absorbing function and it also contributes to the stability of the knee (secondary stabiliser, where the ligaments are the primary stabilizer). Hereditary transmission of the discoid lateral menisci is shown in some cases . There are variations in incidence in various population groups ranging from 0.4-17% for lateral discoid meniscus and 0.1-3 % for medial discoid meniscus. The pMFL thickness and volume were not significantly related to traumatic lateral meniscal tear, medial meniscal tear, and discoid meniscus. Discoid meniscus 는. Although the incidence for a discoid meniscus is between 3% and 5% for the general population, it is unknown with achondroplasia. At birth the entire meniscus has a blood supply at birth but by 10 years of age the central third has become avascular. 1-5 A discoid meniscus represents a meniscus with an atypical saucer-like shape that is thicker, covering a larger surface area of the tibial plateau compared with an anatomically normal crescent-shaped meniscus. If a patient does tear the meniscus, the orthopedic surgeon can trim out the inner part and reshape it back to the normal C-shape. Subjects and methods: We have investigated the apoptotic and autophagic gene . It is thicker and covers more of the tibial plateau.The incidence of lateral discoid meniscus is 0.4% to 17%5, compared to 0.06% to 0.3%for the . The most common developmental anomaly is discoid meniscus (4,7). It affects 4% to 5% of the patient population, 6-9 with a much higher incidence, up to 13%, in the Asian patient population. Discoid menisci are those that have a body that is too wide, usually affecting the lateral meniscus. The discoid meniscus is a relatively rare abnormality of the knee joint. Finally, juvenile OCD has a better prognosis due to an open and active . The concept of a clinical syndrome of a snapping knee that is caused by this type of DLM is widely accepted in the pediatric orthopedic literature. Discoid Meniscus The meniscus is a wedge-shaped piece of cartilage that sits in between the bones of the knee and acts as a cushion to protect the bones during movement. In . current literature supports a congenital theory because of evidence of embryological development and hereditary transmission. Discoid meniscus (DM) is a broad term used to describe a spectrum of disorders of meniscal shape and stability that can affect both men and women. Healthy meniscus is shaped like crescent moons (in fact, "meniscus" comes from the Greek word for crescent). PRiSM. . A torn meniscus can be repaired, regenerated, or replaced at The Stone Clinic. | Find, read and cite all the research you . It typically involves the lateral meniscus but can be bilateral in a small percentage of affected individuals. 11 Discoid lateral meniscus was originally believed to result from an incomplete breakdown of the central meniscus, but this is now disputed, as at no time in . Healthy menisci are shaped like c-shaped moons A deficiency in the resorption of the centre of the cartilage plate during foetal development and a genetic trait have been proposed as mechanisms responsible for . Completely filled in center or small void in center with thicker outer rim Anatomic variation alters normal mechanics and predisposes to tearing. The discoid meniscus may indeed be a congenital anomaly 9, 17), and genetic or familial factors may play a role in the development of discoid menisci 8, 19). Signs and symptoms of meniscus tears in children and teens Symptoms of a meniscus tear can include: Pain in the knee joint Swelling Limping Discoid menisci are anatomical variants that have a body that is too wide, usually affecting the lateral meniscus. . Discoid lateral meniscus is an intra-articular knee disorder that typically presents in children and adolescents. Some patients may experience the feeling that their knee is giving away. Yashoda hospital is the best hospital for Discoid Meniscus treatment in Hyderabad. A discoid meniscus is an unusual meniscus variant, and is wider than the normal crescentic shape. Individuals with a discoid meniscus can be asymptomatic or symptomatic. Discoid Meniscus is a rare orthopedic condition that occurs when the meniscus attains a half-moon or oval shape and thickens up. Fewer patients with discoid meniscus in our study may explain that the attachment type and size of the pMFL were not related to discoid meniscus. The goal of surgery is to contour the discoid lateral meniscus to resemble a normal meniscus. Fourth, the presence of a discoid meniscus has a poorer prognosis due to the oversized meniscus causing excessive stress at the articular surface during motion (16). My orthopedic surgeon indicated that discoid menisci are more prone to tears than "normal" menisci . It may be present in just the one knee or both knees, and it is generally understood that the condition is genetic Symptoms related to a discoid meniscus It has been suggested that discoid meniscus is a congenital disease, and genetic or familial factors may account for some of the . Sometimes repairs (suturing/stitching) of meniscus is necessary to correct the meniscus, and this can only be assessed during surgery. Unfortunately a discoid meniscus does not work as well as a shock absorber and is more likely to tear . 3 in contrast to lateral involvement, the … Pathogenetically, the discoid meniscus may result from failure of the central resorption during the embryologic development [2]. The cartilage absorbs the stress on the knee and acts as a cushion between the three bones that meet at the knee — the femur (thigh bone . Crouzon syndrome is an autosomal dominant genetic disorder known as a branchial arch syndrome. Discoid meniscus is a diagnosis that encompasses a spectrum of meniscal disorders of shape and stability [ 3 ]. M. Halstead 09:56. . There is a higher prevalence of discoid meniscus in Asian countries than in Western countries: 13% in Japan, 10.6% in Korea, 5.8% in India, and 3 to 5% in the United States [ 3, 4 ]. Conclusion: The discoid meniscus etiology should be considered both in morphological and genetic modulation manners: apoptotic and autophagic genes play roles with tibiofemoral morphological differences. This case series includes 4 patients, with ages ranging from adolescence to early . The History and Physical Exam for Discoid Meniscus: Differential Dia… Feat. Bilateral discoid medial menisci (BDMM) represent an exceptionally rare congenital pathology of the knee joint that has low reported incidence. The precise aetiology of a discoid meniscus is unknown, although some authors suggested that it is congenital, with a genetic or familiar predisposition for the development of discoid menisci.14, 33, 34. . Healthy menisci are shaped like crescent moons (in fact, "meniscus" comes from the Greek word for crescent). (2,7,21). Arthroscopy. • Discoid Meniscus Clinical Pearl • Always check Hip ROM during a clinical exam for a pediatric knee patient • Many hip pathologies may present as knee . O Brien T. Bilateral sleeve fractures of the patella in a 12-year-old boy with hereditary spastic paraparesisand crouch gait. 6, 7 Discoid menisci are markedly more . BMJ Case Rep 2013; DOI 10.1136/bcr-2013-202217. Meniscus Anatomy The meniscus is a soft and fibrous cartilage resting between the femur and the tibia in the knee. A discoid meniscus has abnormal morphology. The prevalence of discoid meniscus in our study is similar to the literature. embryological development and hereditary transmission.4 Symptomatic discoid menisci can occur equally in children, adolescents, and young adults, and trauma has been listed . Instead of the narrow crescent shape, as seen in a normal meniscus above, a discoid meniscus is thickened, and has a fuller crescent shape. My understanding is that even with the partial meniscus removal, I have a fair amount of lateral meniscus remaining. The discoid meniscus may be a congenital anomaly, and genetics or family history may play a role in the development of discoid menisci. The patients must In some cases the entire meniscus needs to be excised due to un-repairable damage to the meniscus. Sometimes repairs (suturing/stitching) of meniscus is necessary to correct the meniscus, and this can only be assessed during surgery. Overview D iscoid Meniscus is a term that describes an anatomic abnormality of the shape of the meniscus that results in a larger, thicker meniscus that resembles a "disc" rather than the normal "crescent" shape. Management of this disorder should be directed toward resolution of the symptoms while preserving meniscal tissue and function. 않았으나 선천성 기형 으로 인해 . A discoid meniscus is thicker than normal, and often oval or disc-shaped. Discoid menisci are congenital, frequently bilateral (up to 50%) and have been reported in twins, although no genetic locus has been identified . Many people have them and don't know it. Epidemiology Discoid menisci are congenital, frequently bilateral (up to 50%) and have been reported in twins, although no genetic. Each knee has two menisci. The natural history depends on the type of anomaly and the nature and presence of symptoms. Discoid meniscus 발생기전. There are three different kinds of discoid meniscus susceptible to tearing. 발생하며 후천성 변화로 . Watanabe classified the discoid . This retrospective study was aimed to investigate the epidemiologic, clinical and arthroscopic features of discoid meniscus variant in Greek population. Incidence of the discoid lateral . More variants of the lateral than the medial meniscus have been reported. E. K. Schallert 06:05. Catching, popping, or locking in the knee are usually the symptoms the patient reports. Others believe that discoid appearance of the . Hereditary transmission of the discoid lateral menisci is shown in some cases [9]. The female preponderance of DLM (7:5) was observed There is also a genetic or familial factor that is believed to play a role in the development of discoid menisci. They are incidentally found in 3-5% of knee MRI examinations. What are the odds that my right knee menisci are also discoid? Objective: This study aimed to determine the changes in the mRNA levels of the apoptotic and autophagic genes in the discoid meniscus. Kaynak Nigerian Journal of Clinical Practice. Answer: Discoid meniscus is a rare condition that affects the lateral meniscus present in the knee. However, in some instances, it may hinder the patient's day to day life and needs immediate treatment. In the discoid meniscus, both the shape and the collagen are abnormal. The discoid meniscus may be an important associated finding to better understand the common complaints of leg pain for these patients. Discoid meniscus lacks C-shaped configuration. The purpose of this systematic review is to evaluate evidences of DM . There is a higher prevalence in Asians without any gender predilection . Outside-in Repair of a Radial Tear of the Lateral Meniscus Body . The lateral meniscus of a right knee is shown below in green. They are incidentally found in 3-5% of knee MRI examinations. To demonstrate the importance of mutation or polymorphism of related genes in injury. Discoid meniscus is a congenital anatomic variant seen almost exclusively on the lateral (outer) side of the knee. Because the histology of discoid meniscus is different from that of normal meniscus, it is prone to tearing. The histology and ultrastructure of discoid . The discoid meniscus is a congenital anatomic variant that is estimated to affect up to 5% of the general US population [].In 1889, Young et al. A specific cause for developing a discoid meniscus is . In most cases, the patients may not experience any symptoms throughout his life. 2. A discoid meniscus causes pain, stiffness, and swelling of the knee. The disk shape of these menisci makes them more susceptible to tearing. 2, 3 Incidence is estimated at 0.4% to 5.2% in . In some cases the entire meniscus needs to be excised due to un-repairable damage to the meniscus. Although both menisci have been . . There is a higher prevalence of discoid meniscus in Asian countries than in Western countries: 13% in Japan, 10.6% in Korea, 5.8% in India, and 3 to 5% in the United States [3, 4]. It should be noted that an asymptomatic . The meniscus is a half circular disk of cartilage and is located between the tibia and the femur. Our Meniscus Transplant Center is dedicated to replacing the meniscus and has been successful at getting athletes back to high levels of activity, even if they had developed arthritis. 인해서 발생하진 않습니다. No theories of genetic etiology for discoid meniscus have been brought forward to date. A number of researchers have reported a relation between meniscal injuries and discoid meniscus (4,8,9). A discoid meniscus generally covers the entire tibial plateau. Abstract: Discoid meniscus is a congenital variant of the knee joint that typically involves abnormal morphology and potential instability of the lateral meniscus. It has been suggested that discoid meniscus is a congenital disease, and genetic or familial factors may account for some of the causes [3-5]. The purpose of this systematic review is to evaluate evidences of DM . A discoid meniscus is an unusual meniscus variant, and is wider than the normal crescentic shape. 4 symptomatic discoid menisci can occur equally in children, adolescents, and young adults, and trauma has been listed as the inciting cause of symptoms in 38 to 66% of patients. The discoid meniscus is the most common abnormal meniscal variant in children . Compared to standard meniscus it is thicker and abnormal in shape; these characteristics make it more prone to tear. This condition is caused by a defect that causes the meniscus to be shaped like an oval instead of a c-shape. first reported on the morphology of the discoid meniscus, and the associated clinical "snapping knee syndrome" was subsequently described by Middleton et al. It is a congenital defect whose correct etiology is still debated and far from being clarified. Hereditary; The presence of OCD in identical twins suggests there may be a genetic predisposition (4). 10 It is the most common meniscal variant in children. Diagnosis can be suspected on radiographs with (squaring of lateral condyle with cupping of lateral tibial plateau) but require MRI for confirmation (3 or more 5mm sagittal images with meniscal continuity). It typically affects the lateral meniscus and may be found bilaterally (20%). discoid meniscus is a structural aberration of development, a genetic abnormality could possibly be at fault. Discoid meniscus (DM) is a rare variant of regular knee anatomy. Once a discoid meniscus is torn, it usually does not heal because the meniscus lacks a strong blood supply. It may be present in just the one knee or both knees, and it is generally understood that the condition is genetic . However, in some instances, it may hinder the patient's day to day life and needs immediate treatment. Atik et al Discoid meniscus genetic etiology 648 Nigerian Journal of Clinical Practice ¦Volume 24 Issue 5 May 2021 in conditions leading to cellular stress, such as lack of nutrients and growth factors, to remove damaged organelles, long-lived proteins, and protein aggregates. In the discoid meniscus, there are decreased collagen The goal of surgery is to contour the discoid lateral meniscus to resemble a normal meniscus. The Ohio State University - Wexner Medical Center. Discoid lateral meniscus is a common abnormal meniscal variant in children. 또한 이러한 변화가 형태학적 변형인지 Most people complain of catching, popping, and locking of the knee. Specifically, this syndrome affects the first branchial (or pharyngeal) arch, which is the precursor of the maxilla and mandible.Since the branchial arches are important developmental features in a growing embryo, disturbances in their development create lasting and widespread effects. Discoid meniscus tears o en present in adolescents. A Discoid Meniscus is a congenital defect of the meniscus (present in the knee). The precise aetiology of a discoid meniscus is unknown, although some authors suggested that it is congenital, with a genetic or familiar . The histologic findings of our study seem to confirm that discoid lateral meniscus is different from a normal meniscus in terms of distribution and shape of the cells, vascularity, and organization of collagen fibers, irrespectively of the age of the patients. My meniscus was apparently "discoid" instead of C-shaped. in 1936 [2, 3].As its name implies, the defining feature of the discoid meniscus is its . 24/7 Appointment Helpline +91 40 4567 4567 International +91 40 6600 0066 Home About Us Leadership Team Awards & Recognition Achievements Gallery News 아직 정확환 원인에 대해선 밝혀지진. Discoid meniscus (DM) is a rare variant of regular knee anatomy. Basics Description Menisci are fibrocartilaginous structures that are C-shaped (axial plane) and wedge-shaped (coronal plane). Background: How the meniscus adapts to the morphological changes in the lateral tibiofemoral compartment, in terms of gene expression, was the reason to establish this present study. discoid meniscus, several additional radiographic abnormali-ties may also detected: meniscal cyst formation, anomalous Some of the common symptoms of this condition includes Recurring pain, Stiffness or swelling i. Lateral discoid meniscus is far more common than medial discoid meniscus, with the latter being rare. High type pMFLs tended to be thicker and larger than low type pMFLs and higher thickness and volume of the pMFL was significantly related to the degenerative lateral meniscal tear. A discoid meniscus can be associated with knee abnormalities such as high fibular head, fibular muscular defects, hypoplasia of the . It proves that arthroscopic surgery for discoid meniscus injury has the advantages of less damage and faster recovery, it is the first choice for the treatment of discoid meniscus injury, and the postoperative effect is significant in young patients and those with short duration of symptoms; mixed tears have a greater impact on the . The histology and ul-trastructure of the discoid meniscus are different from those of a normal meniscus. Discoid Meniscus is a rare orthopedic condition that occurs when the meniscus attains a half-moon or oval shape and thickens up. The discoid meniscus is an uncommon anatomical meniscal variant that may present with pain, snapping, motion loss, swelling, and locking of the affected knee, typically during childhood or adolescence. This results in a thickened meniscus that covers more of the lateral tibia (shin bone) than a normal meniscus. A discoid meniscus is a congenital anomaly of the knee found in 3% of the population (up to 15% in Asia). The goal of surgery is to contour the discoid lateral meniscus to resemble a normal meniscus. Discoid meniscus is the most frequent congenital malformation . Arthroscopic treatment of meniscal cysts. Discoid menisci are usually found on the lateral (outer) side of the knee. To search for genetic risk factors of injury and put forward related scientific hypotheses. Meniscus tears usually occur after a sudden forceful twisting of the knee, which causes the meniscus — the semicircular, wedge-shaped collection of soft cartilage in the knee — to stretch and tear. anatomical feature protects the lateral meniscus against the occurrence of tears5. Discoid meniscus가 . While all patients initially underwent MRI for a suspected knee injury, those with lateral knee pain due to fracture, chondrosis, osseous stress response, or . A meniscus tear can be diagnosed during a physical exam from a sports medicine expert who may check your knee's range of motion as well as your walking gait. Some discoid menisci have abnormal peripheral attachments and are unstable. However, cases of accessory lateral meniscus in the form of a double-layered meniscus are extremely uncommon (reported with a prevalence of 0.06% to 0.09% [2, 3]) and, when present, are believed to potentially contribute to the symptoms of patients . A discoid meniscus is a dysmorphic meniscus found to be thicker, abnormal in shape, less stable and with decreased and disorganized collagen fibers compared to an anatomically normal meniscus. Several theories have been proposed regarding the possible cause of DM. Detailed history and physical examination combined with an MRI of the knee predictably diagnose a discoid meniscus. Discoid menisci are prone to tearing secondary to increased thickness, poor tissue quality, and instability. Discoid Meniscus. The discoid lateral meniscus is . Due to these anatomic differences, a discoid meniscus confers inferior mechanical properties and increased risk of both meniscal tear and symptoms such as knee pain and "snapping knee syndrome" . The discoid lateral meniscus is more common in females. We have an experienced team of orthopedic surgeons that are offering comprehensive treatment for Discoid Meniscus. Compared to standard meniscus it is thicker and abnormal in shape; these characteristics make it more prone to tear. The reported incidence of discoid meniscus ranges from 0.4 to 17% for the lateral meniscus [11, 12]. A discoid meniscus is semi-circular instead of C-shaped. PDF | Background: How the meniscus adapts to the morphological changes in the lateral tibiofemoral compartment, in terms of gene expression, was the. A discoid meniscus is the abnormal development of the meniscus leading to a hypertrophic and discoid shaped meniscus. When a well-meaning surgeon enters . For some patients, arthroscopy is the means to diagnose and treat a torn meniscus. Some authors have reported bilateral discoid menisci in identical female twins 20) or in a family of three brothers and sisters 20, 21). . It sometimes may present itself in the form of swelling, pain and cracking sound of the affected knee. Atik et al Discoid meniscus genetic etiology 648 Nigerian Journal of Clinical Practice ¦Volume 24 Issue 5 May 2021 in conditions leading to cellular stress, such as lack of nutrients and growth factors, to remove damaged organelles, long-lived proteins, and protein aggregates. A magnetic resonance imaging test may be prescribed to diagnose if a meniscus tear is present. The Discoid fibrocartilaginous structure differ to normal menisci with disorganized . Several tears are amenable to arthroscopic repair. It is a congenital defect whose correct etiology is still debated and far from being clarified. We reviewed the cases of 2,132 patients who underwent knee arthroscopy between 1986 and 2004 and diagnosis of discoid lateral meniscus was established in 39 patients with mean age of 31.7 ± 9.4 years old. Discoid meniscus is an abnormal meniscus that is thicker than normal and has a different shape and texture that usually affects the lateral meniscus of the knee 1) . In this video, I discuss their significance and how likely they are to be bilateral. We report members of a Caucasian family with abnormally

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