Notes in 13 Knee

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Published 05/01/2023 Musculoskeletal Imaging: KneeThe knee may dislocate in any direction, although {{c1::anteriorly}} is the most common. 
Published 05/01/2023 Musculoskeletal Imaging: KneeIn a knee dislocation, there is high risk for vascular injury to the {{c1::popliteal artery}}, which can even presen…
Published 05/01/2023 Musculoskeletal Imaging: KneePatellar fracture may be caused by:Direct blow, causing a {{c1::communited ::injury pattern}} fractureOr an extreme …
Published 05/01/2023 Musculoskeletal Imaging: KneePatellar fracture must be distinguished from normal variation.Examples of normal variation include {{c1::multipartite}} p…
Published 05/01/2023 Musculoskeletal Imaging: KneeTibial plateau fractures are classified by the {{c1::Schatzker}} classification system.
Published 05/01/2023 Musculoskeletal Imaging: KneeWhich are more stable: Medial or Lateral tibial plateau fractures?{{c1::Lateral}}
Published 05/01/2023 Musculoskeletal Imaging: KneeThe medial and lateral {{c1::menisci}} are crescent-shaped fibrocartilagionous structures that form a discontinous figure…
Published 05/01/2023 Musculoskeletal Imaging: KneeEach meniscus consists of a {{c1::anterior}} and {{c1::posterior}} horn.
Published 05/01/2023 Musculoskeletal Imaging: KneeBoth menisci attach to the underlying tibial plateau by {{c2::anterior and posterior::medial and lateral OR anterior and …
Published 05/01/2023 Musculoskeletal Imaging: KneeThe {{c1::meniscofemoral}} ligaments extend from the {{c2::posterior}} horn of the {{c2::lateral}} meniscu…
Published 05/01/2023 Musculoskeletal Imaging: KneeWhat are the names of the meniscofemoral ligaments and how are they oriented around the PCL?Ligament of {{c1::Humphrey}} …
Published 05/01/2023 Musculoskeletal Imaging: KneeWhat are the vascular zones of the meniscus from peripheral to central?Peripheral third: {{c1::Red zone (more vascular)}}…
Published 05/01/2023 Musculoskeletal Imaging: Knee{{c1::Myxoid degeneration}} is a globular site of {{c3::increased}} signal on {{c4::T2}}-weighted images within the …
Published 05/01/2023 Musculoskeletal Imaging: KneeModality of choice for imaging meniscal injuries: {{c1::T2-weighted MRI}} as it is >90% sensitive and specific
Published 05/01/2023 Musculoskeletal Imaging: KneeYellow arrow: {{c1::A horizontal::What type}} meniscal tear remains parallel to the tibial plateau.Red arrow: {…
Published 05/01/2023 Musculoskeletal Imaging: KneeWhat is the most common pattern of meniscal tear and where does it usually occur?{{c1::Oblique/horizontal}} tear, usually…
Published 05/01/2023 Musculoskeletal Imaging: Knee{{c1::A vertical (aka longitudinal)::What type}} meniscal tear is a {{c2::curved::linear/curved}} tear that follows the {…
Published 05/01/2023 Musculoskeletal Imaging: Knee{{c1::A bucket handle::What type}} meniscal tear is the sequela of a {{c2::vertical (longitudinal)}} tear, where the free…
Published 05/01/2023 Musculoskeletal Imaging: KneeThe most common location of the displaced meniscal fragment in a bucket handle tear is the {{c1::intercondylar notch}}, b…
Published 05/01/2023 Musculoskeletal Imaging: KneeThe {{c2::absent bow tie}} sign in a bucket handle tear represents the absent {{c1::(displaced) meniscal horn}}
Published 05/01/2023 Musculoskeletal Imaging: KneeThe {{c2::double delta}} sign is seen with {{c1::an anteriorly::which direction?}} displaced vertical meniscal …
Published 05/01/2023 Musculoskeletal Imaging: KneeThe {{c2::double PCL}} sign is seen when the posterior horn vertical meniscal flap does not flip {{c1::all the …
Published 05/01/2023 Musculoskeletal Imaging: KneeA double delta sign or double PCL sign depends on if the medial or lateral meniscus is involved, and on the status of {{c…
Published 05/01/2023 Musculoskeletal Imaging: KneeA peripheral longitudinal tear of the {{c2::posterior}} horn of the {{c2::medial}} meniscus {{c3::cannot}} flip anteriorl…
Published 05/01/2023 Musculoskeletal Imaging: Knee A double delta sign is likely a {{c1::lateral::medial/lateral}} meniscal tear (or far less commonly, a {{c1::medi…
Published 05/01/2023 Musculoskeletal Imaging: Knee{{c1::A radial (also known as a transverse tear)::What type}} is a {{c2::vertically}} oriented tear that is {{c3::pe…
Published 05/01/2023 Musculoskeletal Imaging: KneeOn a single image, a radial tear may be indistinguishable from a {{c3::vertical/longitudinal}} tear. On serial sagittal i…
Published 05/01/2023 Musculoskeletal Imaging: KneeThe {{c2::ghost meniscus}} sign can be seen in {{c1::a radial::what type?}} tear, located adjacent to the {{c4::inte…
Published 05/01/2023 Musculoskeletal Imaging: Knee{{c2::Radial}} meniscal tears are associated with a high rate of meniscal {{c1::extrusion}}, which may lead to {{c3:…
Published 05/01/2023 Musculoskeletal Imaging: KneeA {{c1::parameniscal cyst}} is {{c2::loculated fluid}} adjacent to the meniscus, thought to result from extension of…
Published 05/01/2023 Musculoskeletal Imaging: KneeParameniscal cysts are most commonly associated with {{c1::horizontal cleavage::what type?}} meniscal tears. …
Published 05/01/2023 Musculoskeletal Imaging: KneeWhy is it necessary to describe the presence of a parameniscal cyst in a patient with a meniscal tear?The cyst may contin…
Published 05/01/2023 Musculoskeletal Imaging: KneeA {{c1::discoid}} meniscus is a spectrum of congenital malformations of the meniscus that ranges from increased {{c3::thi…
Published 05/01/2023 Musculoskeletal Imaging: Knee{{c1::Discoid meniscus::What meniscal abnormality}} typically affects children and is a common cause of joint-line {{c2::…
Published 05/01/2023 Musculoskeletal Imaging: KneeThe {{c1::lateral::medial/lateral}} meniscus is more commonly affected in discoid meniscus.
Published 05/01/2023 Musculoskeletal Imaging: KneeOn MRI, a meniscus is {{c1::discoid}} if an {{c2::oval}} or {{c2::bow tie-}}shaped meniscus is seen on three or more…
Published 05/01/2023 Musculoskeletal Imaging: KneeThe {{c1::anterior cruciate ligament (ACL)}} arises from the {{c2::lateral}} aspect of the femoral intercondylar notch an…
Published 05/01/2023 Musculoskeletal Imaging: KneeWhich attachment of the ACL is stronger?{{c1::Tibial::Femoral or Tibial?}}
Published 05/01/2023 Musculoskeletal Imaging: KneeWhat are the two fiber bundles of the ACL?A smaller {{c1::anteromedial}} band and larger {{c1::posterolateral}}&nbsp…
Published 05/01/2023 Musculoskeletal Imaging: Knee{{c2::Mucoid degeneration}} of the ACL shows ACL {{c1::thickening}} with interemediate {{c4::T2 hyperintense}} …
Published 05/01/2023 Musculoskeletal Imaging: KneeACL injury is usually due to {{c1::acute::acute/chronic}} injury
Published 05/01/2023 Musculoskeletal Imaging: KneeMRI of an ACL tear may show either frank {{c1::discontinuity}} of the ligament fibers or abnormal {{c1::course/signa…
Published 05/01/2023 Musculoskeletal Imaging: KneeACL injuries are often associated with {{c1::meniscal tears}} and {{c1::MCL tears}} = {{c2::O'Donoghue's (unhap…
Published 05/01/2023 Musculoskeletal Imaging: KneeSecondary findings of an ACL injury:1. HIGHLY Suggestive of ACL Injury: {{c1::Bone contusion}} pattern with {{c1::bo…
Published 05/01/2023 Musculoskeletal Imaging: KneeRadiographic clue of ACL injury: {{c1::Segond}} fracture
Published 05/01/2023 Musculoskeletal Imaging: KneeSegond fracture is a {{c1::n avulsion}} fracture of the {{c3::lateral tibia plateau}} and is associated with both {{…
Published 05/01/2023 Musculoskeletal Imaging: KneeSegond fracture is thought to represent detachment of the {{c1::lateral capsular}} ligament.
Published 05/01/2023 Musculoskeletal Imaging: KneeAfter ACL reconstruction, the graft should run {{c1::parallel}} to the {{c2::intercondylar notch}} behind {{c3::Blum…
Published 05/01/2023 Musculoskeletal Imaging: KneeIf a reconstructed ACL graft is too steep → graft can be impinged by the {{c1::femur}} with leg {{c1::extension}} …
Published 05/01/2023 Musculoskeletal Imaging: KneeA {{c1::cyclops}} lesion is a nodular {{c2::scarring}} in {{c3::Hoffa's fat pad}} {{c4::anterior}} to the recon…
Published 05/01/2023 Musculoskeletal Imaging: KneeThe posterior cruciate ligament (PCL) is a {{c1::stronger::stronger/weaker}} ligament than the ACL, and thus {{c1::less}}…
Published 05/01/2023 Musculoskeletal Imaging: KneeThe {{c2::posterior cruciate ligament (PCL)}} arises from the {{c1::medial}} aspect of the femoral intercondylar not…
Published 05/01/2023 Musculoskeletal Imaging: KneeTypical MRI appearance of PCL injury includes increased {{c1::laxity}} of the PCL with or without abnormal high sign…
Published 05/01/2023 Musculoskeletal Imaging: KneePCL tears are {{c1::less:more/less}} frequently repaired compared to ACL tears.
Published 05/01/2023 Musculoskeletal Imaging: KneeThe medial collateral ligament (MCL) arises from the {{c1::posterior}} aspect of the medial femoral condyle and atta…
Published 05/01/2023 Musculoskeletal Imaging: KneeThe MCL fibers are interlaced with {{c1::the joint capsule and medial meniscus::what two knee structures?}}
Published 05/01/2023 Musculoskeletal Imaging: KneeMCL injury grading system:Grade 1: {{c1::MCL sprain}} - {{c4::High}} signal in medial soft tissues with {{c4::n…
Published 05/01/2023 Musculoskeletal Imaging: KneeMCL injuries are caused by a {{c1::valgus::varus/valgus}} tensile force on the knee and most often occur in young at…
Published 05/01/2023 Musculoskeletal Imaging: KneeEdema around the MCL in an older patient is more likely due to {{c1::osteoarthritis}}, do not mistake for {{c2::MCL …
Published 05/01/2023 Musculoskeletal Imaging: KneeA {{c1::Pellegrini-Stieda}} lesion is {{c2::post-traumatic calcification}} {{c3::medial}} to the medial femoral…
Published 05/01/2023 Musculoskeletal Imaging: KneeThe lateral collateral ligament (LCL) complex is composed of what 3 structures from anterior to posterior?{{c1::IT band}}…
Published 05/01/2023 Musculoskeletal Imaging: KneeWhat LCL complex structures attach to the lateral fibular head?{{c1::Biceps femoris tendon and the LCL}}
Published 05/01/2023 Musculoskeletal Imaging: KneeWhat LCL complex structure attaches to Gerdy's tubercle?{{c1::IT band}}
Published 05/01/2023 Musculoskeletal Imaging: KneeLCL injuries are usually associated with injury to the {{c1::posterolateral corne::knee location}}
Published 05/01/2023 Musculoskeletal Imaging: KneePosterolateral corner of the knee structures:{{c1::LCL complex (biceps femoris tendon, LCL, IT band)::complex}}{{c3::Popl…
Published 05/01/2023 Musculoskeletal Imaging: KneeIT band syndrome is caused by friction between the {{c1::anterolateral}} femur and the IT band tendon
Published 05/01/2023 Musculoskeletal Imaging: KneeFluid surround the IT band may represent {{c1::IT band syndrome.}}
Published 05/01/2023 Musculoskeletal Imaging: KneeIT band syndrome can cause {{c2::anterolateral}} knee pain and is commonly seen in {{c1::runners:what athletes?}}
Published 05/01/2023 Musculoskeletal Imaging: KneeThe extensor mechanism of the knee is composed of the conjoined {{c1::quadriceps}} tendon, the {{c1::patella}}, and …
Published 05/01/2023 Musculoskeletal Imaging: KneeThe patella is a {{c1::sesamoid}} bone because it is enclosed within the quadriceps tendon, the patellar tendon atta…
Published 05/01/2023 Musculoskeletal Imaging: KneeThree of the quadriceps muscles ({{c1::vastus medialis}}, {{c1::intermedius}}, and {{c1::lateralis}}) originate from…
Published 05/01/2023 Musculoskeletal Imaging: KneeTear of the quadriceps or patellar tendon clinically presents with loss of {{c1::knee extension.::what motion?}}
Published 05/01/2023 Musculoskeletal Imaging: KneeQuadriceps tendon tear most commonly occurs {{c1::within 2cm of the patella.::where?}}
Published 05/01/2023 Musculoskeletal Imaging: KneeQuadriceps tendon tear may be evident on radiographs due to {{c1::patella baja (too low)::what finding?}}
Published 05/01/2023 Musculoskeletal Imaging: KneePatellar tendon tear may be evident on radiographs due to {{c1::patella alta (too high).::what finding?}}
Published 05/01/2023 Musculoskeletal Imaging: Knee{{c2::Patellar tendinosis (jumper's knee)}} is seen on MRI as {{c1::thickening}} of the patellar tend…
Published 05/01/2023 Musculoskeletal Imaging: KneeTraumatic lateral patellar dislocation leaves behind what distinctive pattern of injury on MRI, even if the patella is re…
Published 05/01/2023 Musculoskeletal Imaging: Knee{{c2::Osgood-Schlatter disease}} is {{c1::osteochondrosis}} of the {{c3::tibial tubercle}} caused by {{c4::repe…
Published 05/01/2023 Musculoskeletal Imaging: KneeRadiographic findings of Osgood-Schlatter disease are an enlarged {{c1::tibial tuberosity}} with {{c3::fragmentation…
Published 05/01/2023 Musculoskeletal Imaging: KneeThe {{c2::Outerbridge}} classification is used for describing {{c1::articular cartilage injury/degeneration}}, though it …
Published 05/01/2023 Musculoskeletal Imaging: KneeOuterbridge classification of knee articular cartilage injury:Grade {{c1::0}}: Normal
Published 05/01/2023 Musculoskeletal Imaging: KneeOuterbridge classification of knee articular cartilage injury:Grade {{c1::1}}: {{c2::Heterogenous}} MRI signal and {{c2::…
Published 05/01/2023 Musculoskeletal Imaging: KneeOuterbridge classification of knee articular cartilage injury:Grade {{c1::2}}: Superficial defect or fissuring {{c2::<…
Published 05/01/2023 Musculoskeletal Imaging: KneeOuterbridge classification of knee articular cartilage injury:Grade {{c1::3}}: Deep defect or fissuring {{c2::>50}}%
Published 05/01/2023 Musculoskeletal Imaging: KneeOuterbridge classification of knee articular cartilage injury:Grade {{c1::4}}: {{c2::Full-thickness}} defect
Published 05/01/2023 Musculoskeletal Imaging: KneeThe knee has three compartments and six chondral surfaces:{{c1::Patellofemoral}} compartment - {{c2::patellar}} and {{c2:…
Published 05/01/2023 Musculoskeletal Imaging: KneeCartilage injury/degeneration may manifest as surface {{c1::irregularity}}, {{c1::fissur}}ing, focal or diffuse {{c1::thi…
Published 05/01/2023 Musculoskeletal Imaging: KneeCartilage {{c1::delamination}} is a dissecting-type {{c2::detachment}} of the cartilage undersurface from the bone, …
Published 05/01/2023 Musculoskeletal Imaging: Knee{{c1::Osteochondral}} lesions/defects/injuries describe a range of disorders involving articular cartilage, {{c2::subchon…
Published 05/01/2023 Musculoskeletal Imaging: KneeWhat is important to mention when evaluating osteochondral lesions? - {{c1::Fluid}} or {{c1::cystic}} changes d…
Published 05/01/2023 Musculoskeletal Imaging: Knee{{c1::Osteochondritis dissecans}} is a developmental disorder of {{c2::subchondral bone}}, resulting in formation of an {…
Published 05/01/2023 Musculoskeletal Imaging: Knee{{c1::Osteochondral fracture}} is a result of an acute or chronic repetitive {{c2::trauma}}, causing injury to the {{c3::…
Published 05/01/2023 Musculoskeletal Imaging: Knee{{c1::Subchondral insufficiency fracture}} is caused by {{c2::collapse}} of the subchondral bone, typically in …
Published 05/01/2023 Musculoskeletal Imaging: KneeA key imaging finding of {{c1::subchondral insufficiency fracture}} is {{c2::thickening}} and {{c2::irregularity}} o…
Published 05/01/2023 Musculoskeletal Imaging: Knee{{c1::Avascular necrosis}} is primary {{c2::osteonecrosis}} of the subchondral bone, which may progress to {{c2::sub…
Published 05/01/2023 Musculoskeletal Imaging: KneeOne key imaging finding of {{c1::avascular necrosis}} is {{c2::serpiginous}} signal abnormality of the subchondral b…
Published 05/01/2023 Musculoskeletal Imaging: Knee{{c1::Pigmented villonodular synovitis (PVNS)}} is a {{c2::benign hyperplastic}} proliferation of the {{c4::synovium…
Published 05/01/2023 Musculoskeletal ImagingWhere is PVNS usually found?{{c1::Knee}}
Published 05/01/2023 Musculoskeletal Imaging: KneePVNS presents as knee {{c1::pain and swelling}}, with recurrent {{c2::dark brown::color}} effusions from prior hemor…
Published 05/01/2023 Musculoskeletal Imaging: KneePVNS most commonly {{c2::diffuse::diffuse vs focal}}ly affects a joint, but it may also be {{c2::focal::diffuse vs focal}…
Published 05/01/2023 Musculoskeletal Imaging: KneeRecurrent hemorrhage from PVNS leads to residual intra-articular {{c1::hemosiderin}}, which is paramagnetic. This will ap…
Published 05/01/2023 Musculoskeletal Imaging: Knee{{c1::Lipoma arborescens}} is an overgrowth of {{c2::intracapsular synovial fatty tissue}}, causing lobulated and globula…
Published 05/01/2023 Musculoskeletal Imaging: KneeLipoma arborescens is treated with {{c1::synovectomy}} to prevent {{c1::premature osteoarthritis}}.
Published 05/01/2023 Musculoskeletal Imaging: KneeBaker's cyst is a {{c1::popliteal}} cyst caused from a {{c2::ball-valve}} type communication with the knee joint.
Published 05/01/2023 Musculoskeletal Imaging: KneeThe typical location of a Baker's cyst is between the {{c1::semiMembranosus tendon}} and {{c1::Medial head of the gastroc…
Published 05/01/2023 Musculoskeletal Imaging: KneeAn important differential consideration for a suspected Baker's cyst is a {{c1::popliteal aneurysm}}.
Published 05/01/2023 Musculoskeletal Imaging: KneeTennis leg refers to either a tear of the {{c1::plantaris}} tendon or {{c2::medial}} head of the {{c1::gastrocn…
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Published 05/01/2023 Musculoskeletal Imaging: KneeCase: Knee injuryFrontal radiograph: joint space {{c4::widening}}, suggesting {{c5::dislocation}}Red arrow: {{c1::Os…
Published 05/01/2023 Musculoskeletal Imaging: KneeCase: Sagittal T2 MRI of KneeYellow arrow: increased {{c2::globular}} signal in peripheral meniscus that {{c3::does …
Published 05/01/2023 Musculoskeletal Imaging: KneeCase: Sagittal T2 image of the kneeYellow arrow: {{c1::Oblique}} meniscal tear
Published 05/01/2023 Musculoskeletal Imaging: KneeCase: Coronal MRIYellow arrow: {{c1::Horizontal}} meniscal tearRed arrow: {{c2::Parameniscal cyst}}
Published 05/01/2023 Musculoskeletal Imaging: KneeCase: Sagittal (L) and coronal (R) PD-weighted MRI with fat suppressionYellow arrow: {{c1::Bucket handle}} meni…
Published 05/01/2023 Musculoskeletal Imaging: KneeCase: Sagittal PD-weighted MRI with fat suppressionRed arrow: Absent {{c4::posterior horn}}Blue arrow: Native {…
Published 05/01/2023 Musculoskeletal Imaging: KneeCase: Coronal PD-weighted MRI with fat suppression Yellow arrow: {{c1::Discoid meniscus::Meniscus patholog…
Published 05/01/2023 Musculoskeletal Imaging: KneeCase: Knee injury, frontal radiographYellow arrow: {{c1::Segond fracture}}, which is a{{c2::n avulsion fracture}} of…
Published 05/01/2023 Musculoskeletal Imaging: KneeCase: Post-op ACL reconstructionYellow arrow: {{c2::Nodular}} soft-tissue anterior to the reconstructed ACL, also known a…
Published 05/01/2023 Musculoskeletal Imaging: KneeCase: Sagittal fluid-sensitive MRIYellow arrow: {{c1::frank rupture}} of {{c2::ACL}} with {{c3::discontinuity}} of f…
Published 05/01/2023 Musculoskeletal Imaging: KneeCase: Sagittal proton-density MRIYellow arrows: {{c1::PCL interstitial tear}}Associated findings: {{c2::in…
Published 05/01/2023 Musculoskeletal Imaging: KneeCase: Knee injury, frontal radiographYellow arrow: {{c1::Pellegrini-Stieda}} lesion, caused by {{c3::mineralization}…
Published 05/01/2023 Musculoskeletal Imaging: KneeCase: Axial fluid-sensitive MRIYellow arrow: {{c1::bone marrow edema}} of {{c2::lateral femoral condyle}} Red a…
Published 05/01/2023 Musculoskeletal Imaging: KneeCase: Sagittal fluid-sensitive (L) and proton-density (R) MRIYellow arrows: Enlarged, fragmented {{c2::tibial tuberc…
Published 05/01/2023 Musculoskeletal Imaging: KneeCase: Knee pain in middle-aged to older patientYellow arrow: irregular {{c3::thickening}} of the {{c2::subchondral b…
Published 05/01/2023 Musculoskeletal Imaging: KneeCase: Coronal PD-weighted MRI with fat suprresionYellow arrow: {{c3::Linear}} {{c4::fluid}} signal undercutting the {{c5:…
Published 05/01/2023 Musculoskeletal Imaging: KneeCase: Lateral knee radiograph (top L), axial proton-density MRI (top R), sagittal gradient echo MRI (bottom L), arth…
Published 05/01/2023 Musculoskeletal Imaging: KneeCase: Coronal PD-weighted MRI (top L), with fat suppression (top R), axial PD-weighted MRI with fat supression (bottom)Ye…
Published 05/01/2023 Musculoskeletal Imaging: KneeWhen distinguishing a patellar fracture from a normal variant patella, multipartite/bipartite patellas will have {{c1::we…
Published 05/01/2023 Musculoskeletal Imaging: KneeWhen distinguishing a patellar fracture from a normal variant patella, dorsal defect of the patella will have a {{c1…
Published 05/01/2023 Musculoskeletal Imaging: KneeCase: Knee injuryYellow arrow: distracted {{c1::patellar fracture}}Mechanism of injury: extreme tension of {{c2…
Published 05/01/2023 Musculoskeletal Imaging: KneeThe {{c1::posterior}} horn of the {{c2::medial}} meniscus is larger than its {{c1::anterior}} horn. Both horns of the {{c…
Published 05/01/2023 Musculoskeletal Imaging: KneeTrauma to the meniscal root can cause meniscal {{c1::extrusion}}
Published 05/01/2023 Musculoskeletal Imaging: KneeMeniscofemoral ligaments are {{c1::variably::always or variably}} present and can be mistaken as meniscal {{c2::tears}}
Published 05/01/2023 Musculoskeletal Imaging: KneeWhich zone of the meniscus may heal spontaneously after surgical repair?{{c1::Peripheral/red zone}}Which zone of the meni…
Published 05/01/2023 Musculoskeletal Imaging: Knee{{c1::NORMAL MENISCUS}}
Published 05/01/2023 Musculoskeletal Imaging: Knee{{c1::Myxoid degeneration::Myxoid degeneration vs Meniscal tear}} is not thought to cause symptoms and is not treated
Published 05/01/2023 Musculoskeletal Imaging: KneeWith a true horizontal meniscal tear, the plane of cleavage appears similar in both {{c1::sagittal}} and {{c1::coronal}} …
Published 05/01/2023 Musculoskeletal Imaging: KneeOblique/horizontal meniscal tears are more often {{c1::degenerative::traumatic or degenerative}}
Published 05/01/2023 Musculoskeletal Imaging: KneeVertical/longitudinal meniscal tears appear in {{c1::vertical}} orientation on serial sagittal images and will remai…
Published 05/01/2023 Musculoskeletal Imaging: KneeCase: Knee injuryYellow arrow: {{c1::vertical}} meniscal tear
Published 05/01/2023 Musculoskeletal Imaging: KneeWith the double delta sign, the displaced fragment is located more {{c1::posterior}} compared to the native ant…
Published 05/01/2023 Musculoskeletal Imaging: KneeA peripheral longitudinal tear of the {{c1::posterior}} horn of the {{c2::lateral}} meniscus is not impeded by the {{c3::…
Published 05/01/2023 Musculoskeletal Imaging: KneeCase: Knee injuryYellow arrow: {{c1::bucket handle}} meniscal tear
Published 05/01/2023 Musculoskeletal Imaging: KneeCase: Knee injuryYellow arrow: {{c1::radial}} tear of meniscal body
Published 05/01/2023 Musculoskeletal Imaging: KneeCase: Knee injuryYellow arrow: {{c1::radial}} tear of meniscal hornSign: {{c2::ghost meiscus}} sign
Published 05/01/2023 Musculoskeletal Imaging: KneeCase: Knee injuryDiagnosis: {{c1::discoid meniscus}} 
Published 05/01/2023 Musculoskeletal Imaging: KneeIf a reconstructed ACL graft is too lax → graft may not provide enough {{c2::stablility}}
Published 05/01/2023 Musculoskeletal Imaging: KneeIn meniscal tear or myxoid degeneration is the morphology of the meniscus commonly abnormal?{{c1::Meniscal tear}}
Published 05/01/2023 Musculoskeletal Imaging: KneeCase: Sagittal PD-weighted MRI with fat suppression, note fibula for lateralityRed arrow: Absent {{c5::posterio…
Published 05/01/2023 Musculoskeletal Imaging: KneeCase: Sagittal proton-density (L) and Coronal proton-density (R) MRIBlue arrow: Normal striations of {{c1::ACL}…
Published 05/01/2023 Musculoskeletal Imaging: KneeCase: Sagittal fluid-sensitive MRI (L), Sagittal proton-density MRI (R)Yellow arrow, L: {{c3::Bone marrow edema…
Published 05/01/2023 Musculoskeletal Imaging: KneeCase: Sagittal proton-density MRI Yellow arrows: {{c1::PCL complete tear}}
Published 05/01/2023 Musculoskeletal Imaging: KneeCase: Acute knee pain in younger patient Yellow arrow: displaced fracture of the {{c2::lateral t…
Published 05/01/2023 Musculoskeletal Imaging: KneeCase: Knee pain Yellow arrow: {{c1::superficial fissuring}} of the medial trochlea = grade {{c2::2::Outerb…
Published 05/01/2023 Musculoskeletal Imaging: KneeCase: Knee pain Yellow arrow: {{c1::full thickness defect}} of the medial patellar facet with {{c3::delami…
Published 05/01/2023 Musculoskeletal Imaging: KneeCase: Axial proton-density MRIYellow arrow: complete tearing of the {{c1::medial retinaculum}}Diagnosis/also pr…
Published 05/01/2023 Musculoskeletal Imaging: KneeCase: Sagittal proton density fat-saturated (L), proton density (R) MRIYellow arrows: complete disruption of th…
Published 05/01/2023 Musculoskeletal Imaging: KneeCase: Two patients, PD-weighted MRI with fat suppressionL IMAGE:Yellow arrow: full-thickness (grade {{c1::3}}) …
Published 05/01/2023 Musculoskeletal Imaging: KneeMust distinguish between two causes of lateral knee pain: {{c1::iliotibial band syndrome::non-surgical tx}} vs {{c1::late…
Published 05/01/2023 Musculoskeletal Imaging: KneeMCL {{c1::is NOT::is/is}} visualized by arthroscopy because it is {{c1::extra}}synovial
Published 05/01/2023 Musculoskeletal Imaging: KneePCL is normally {{c1::low}} signal on all sequences
Published 05/01/2023 Musculoskeletal Imaging: Knee{{c2::Blumensaat's}} line is a line drawn on radiography along the {{c1::intercondylar roof}}, the line a {{c4::reconstru…
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