분류 전체보기597 [Tear_11] Wrisberg Rip_Longitudinal-Vertical Tears -09 Posterior oblique drawing demonstrates PCL, LM, meniscofemoral ligaments (Humphry ligament and Wrisberg ligament) The meniscofemoral ligaments originate from the posterior horn of the lateral meniscus and insert onto the lateral aspect of the posterior medial femoral condyle, with the Humphry ligament anterior to the posterior cruciate ligament (PCL) and the Wrisberg ligament posteriorly Wrisber.. 2021. 10. 10. [Tear_10] Longitudinal-Vertical Tears_ ACL tear -08 There is a close association between ACL tears and peripheral longitudinal tears in the posterior horns of both the medial and lateral menisci. Acute ACL injury is associated with more lateral meniscal tears, while chronic ACL deficiency is associated with more medial meniscal tears,many of which require meniscectomy. So early ACL reconstruction is recommended also for the prevention of secondar.. 2021. 10. 10. [Tear_09] Wrisberg type discoid lateral meniscus -07 Wrisberg-variant discoid lateral meniscus can be interpreted as peripheral longitudinal tear or popliteomeniscal fascicles tear. Watanabe classification recognizes three distinct variants of discoid meniscus, complete variant, partial variant, and Wrisberg variant. The Wrisberg-variant discoid lateral meniscus is an unstable type that lacks posterior ligament attachments, having only an attachme.. 2021. 10. 9. [Tear_08] Tear of popliteomeniscal fascicles -06 It is sometimes difficult to identify peripheral longitudinal tears in the posterior horn of the lateral meniscus because of the complex anatomy and posterior attachments of the capsule and popliteomeniscal fascicles. Far peripheral longitudinal tears can be more difficult to detect With an “extra” vertical line or layer in the meniscal periphery, it can be a subtle finding that indicates a tear.. 2021. 10. 9. [Tear_07] Far Peripheral Longitudinal Meniscal Tear -05 On the left image, we can easily see the longitudinal tear, but on the right image it is very difficult to identify peripheral longitudinal tear. Like this, longitudinal tears that occur further peripherally can be more difficult to detect. When the tear extends through the meniscal substance it is readily identified against the contrast afforded by the low signal meniscal tissue. or, Identifica.. 2021. 10. 9. [Tear_06] Far Peripheral Tear Longitudinal Meniscal Tear -04 Here is a full-thickness peripheral longitudinal tear of the posterior horn of lateral meniscus. There is an extra vertical line or layer in the periphery of lateral meniscus, indicative of far peripheral longitudinal tear. The tear is parallel and adjacent to the popliteus tendon. It is sometimes difficult to identify peripheral longitudinal tears in the posterior horn of the lateral meniscus b.. 2021. 10. 9. [Tear_05] Inferior Surface Longitudinal Meniscal Tear -03 Longitudinal tears are diagnosed on MRI by the presence of a vertical line of increased signal intensity contacting the superior, inferior, or both surfaces of the meniscus. The longitudinal tear extends to the inferior meniscal surface and courses parallel to the long axis of the meniscus on corresponding PD FSE axial image. [Tear_04] case demonstrates vertically oriented increased signal inten.. 2021. 10. 9. [Tear_04] Complete Longitudinal Meniscal Tear -02 Longitudinal tears almost always involve the posterior horn in both the medial and lateral menisci. They are diagnosed on MRI by the presence of a vertical line of increased signal intensity contacting the superior, inferior, or both surfaces of the meniscus. MR images showing vertically oriented increased signal intensity contacting both articular surfaces of the body and posterior horn of the .. 2021. 10. 9. [Tear_03] Longitudinal Meniscal Tear -01 Left drawing shows a typical longitudinal tear that divides the meniscus into inner and outer halves, and the right drawing shows the expected appearance of the tear. Longitudinal tear with peripheral vertical orientation through the circumferential collagen fibers. Longitudinal tears run perpendicular to the tibial plateau and parallel to the long axis of the meniscus. Unlike horizontal or radi.. 2021. 10. 9. [Anatomy_31] Anterior meniscofemoral ligament, Anomalous insertion of the medi Anomalous insertion of the medial meniscus (AIMM) into the anterior cruciate ligament (ACL) is rare.The AIMM has the same anatomical description as the anteromedial meniscofemoral ligament It appears as a linear band isointense to the ACL and meniscus, which runs parallel to the ACL and demonstrates a hyperintense gap between it and the ACL On MRI, this anomaly may be misinterpreted as an ACL te.. 2021. 10. 2. [Anatomy_30] Oblique Meniscomeniscal Ligament vs bucket handle tear -03 The medial OMML originates from the anterior horn of the medial meniscus and inserts onto the posterior horn of the lateral meniscus between the ACL and PCL. This structure should not be mistaken for a bucket handle meniscal tear A bucket-handle tear is a longitudinal tear with central migration of the inner “handle” fragment The correct diagnosis of an oblique meniscomeniscal ligament rather th.. 2021. 10. 2. [Anatomy_29] Oblique Meniscomeniscal Ligament -02 The medial OMML originates from the anterior horn of the medial meniscus and extends through the intercondylar notch to insert onto the posterior horn of the lateral meniscus. This ligament passes between the ACL and PCL. This oblique meniscomeniscal ligament is kind of similar SI to meniscal tissue. The sagittal image near the midline demonstrates a linear low signal intensity structure atop th.. 2021. 10. 2. [Anatomy_28] Oblique Meniscomeniscal Ligament -01 The medial and lateral oblique menisco-meniscal ligaments are rare and can mimic a tear if not recognized. The oblique meniscomeniscal ligament passes from the anterior horn of one meniscus to the posterior horn of the opposite meniscus. The oblique meniscomeniscal ligaments are named based on their anterior attachment site. The medial OMML originates from the anterior horn of the medial meniscu.. 2021. 10. 2. [Anatomy_27] Anterior transverse meniscal ligament -02 Both horns of the lateral meniscus are triangular in shape and have very sharp points. In this case, we can this low-signal-intensity band like structure adjacent to the anterior horn of the lateral meniscus Both cases are normal finding, The transverse ligament has various diameters. The anterior root of MM inserts along the tibial eminence, and posterior fibers of the anterior horn attachment .. 2021. 9. 27. [Anatomy_26] Anterior transverse meniscal ligament -01 The transverse ligament is a fibrous band that connects the anterior horns of the medial and lateral menisci. Axial and sagittal images demonstrate the course of the transverse ligament as a low-signal-intensity band traversing Hoffa’s infrapatellar fat pad. The transverse ligament can simulate an oblique tear adjacent to the anterior horn of the lateral meniscus © 2021 MSK MRI Jee Eun Lee All R.. 2021. 9. 27. [Anatomy_25] Coronary (meniscotibial) ligament of lateral meniscus Peripheral attachments of the lateral meniscus are less extensive and generally more lax than on the medial side , allowing greater mobility of the lateral meniscus, and likely contributing to the relatively increased frequency of medial meniscal tears. The coronary ligaments (meniscotibial ligaments) provide an attachment from the posterior horn of the lateral meniscus to the tibia. This fat-su.. 2021. 9. 26. [Anatomy_24] Meniscofemoral ligament, Humphry ligament The meniscofemoral ligaments originate from the posterior horn of the lateral meniscus and insert onto the lateral aspect of the posterior medial femoral condyle, anterior to the PCL. notice, This cleft between the meniscus and meniscofemoral ligament may be mistaken for a meniscal tear. © 2021 MSK MRI Jee Eun Lee All Rights Reserved. #MSKMRI, #virtualMRI, #radiologist, #Knee_MRI, #MSKMRI_Knee, .. 2021. 9. 26. [Anatomy_23] Meniscofemoral ligament, Wrisberg ligament, PseudoTear, Wrisberg Ri https://youtu.be/twVB-GMvcIg Coronal image demonstrates the posterior meniscofemoral ligament of Wrisberg (arrow) coursing obliquely downward from the medial femoral condyle to attach to the posterior horn of the lateral meniscus The meniscofemoral ligaments originate from the posterior horn of the lateral meniscus and insert onto the lateral aspect of the posterior medial femoral condyle, poste.. 2021. 9. 26. [Shorts #05] Meniscofemoral ligament, Wrisberg ligament #shorts •This posteroblique illustration shows the relationship of meniscofemoral ligaments, lateral meniscus, and PCL. The meniscofemoral ligaments originate from the posterior horn of the lateral meniscus and insert onto the lateral aspect of the posterior medial femoral condyle, with the Humphry ligament anterior to the posterior cruciate ligament (PCL) and the Wrisberg ligament posteriorly Subset of.. 2021. 9. 26. [Anatomy_22] Meniscofemoral ligament, Humphry, Wrisberg The major attachments of the posterior horn of the lateral meniscus are the popliteomeniscal fascicles and the meniscofemoral ligaments. This posteroblique illustration shows the relationship of meniscofemoral ligaments, lateral meniscus, and PCL. The meniscofemoral ligaments originate from the posterior horn of the lateral meniscus and insert onto the lateral aspect of the posterior medial femo.. 2021. 9. 26. [Shorts #03] Meniscofemoral ligament, Humphry, Wrisberg #shorts •This figure illustrates the relationship of meniscofemoral ligaments, lateral meniscus, and PCL. The meniscofemoral ligaments originate from the posterior horn of the lateral meniscus and insert onto the lateral aspect of the posterior medial femoral condyle, with the Humphry ligament anterior to the posterior cruciate ligament (PCL) and the Wrisberg ligament posteriorly Occasionally the menisc.. 2021. 9. 25. 이전 1 ··· 24 25 26 27 28 29 다음
