✅ Knee MRI Mastery/Chap 3.Collateral Ligaments85 (Fig 3-A.23) Meniscotibial Ligament Tear_ Part 1 https://youtu.be/lxtIuqdGWcshttps://youtu.be/GSIg93UH3Oc 📌 Meniscotibial Ligament and Its ImportanceThe meniscotibial ligament plays a crucial role in maintaining the stability and position of the meniscus. Its tibial attachment is located on the medial aspect of the medial rim of the tibial plateau, near the joint line and proximal to the attachment of the anterior arm of the semimembranosus e.. 2024. 5. 9. (Fig 3-A.22) Meniscofemoral Ligament Avulsion Fracture https://youtu.be/AQG4wxLAKlMhttps://youtu.be/GSIg93UH3Oc 📌Deep MCL Avulsion Injury: Symptoms and Types✅ Symptoms:Isolated meniscofemoral ligament tear: Chronic knee pain (no instability)Meniscotibial ligament tear: Knee instability, medial meniscus extrusionMay mimic meniscal tear symptoms✅ Injury Types:1️⃣ Meniscofemoral Ligament InjuriesRare avulsion fractures in adultsMore prone to sprains/t.. 2024. 5. 9. (Fig 3-A.21) Meniscofemoral Ligament Tear https://youtu.be/VxP4f9PU47khttps://youtu.be/GSIg93UH3Oc 📌 Meniscofemoral Ligament Tear✅ Associations and ImplicationsAssociated with high-grade MCL injuries, meniscocapsular separation, and meniscal injuriesIn ACL-deficient knee, sMCL and medial capsule act as secondary restraints to anterior tibial translationMeniscofemoral ligament injuries are prevalent in ACL ruptures and can present with .. 2024. 5. 8. (Fig 3-A.20) Superficial and Deep MCL Anatomy https://youtu.be/At9hFmbgYD4https://youtu.be/GSIg93UH3Oc 📌Deep Medial Collateral Ligament The deep medial collateral ligament (dMCL) is an essential independent stabilizer of the knee joint, adhering to the articular capsule.Rupture of the dMCL can clinically mimic a meniscal tear, highlighting the importance of recognizing and properly evaluating this structure during knee examinations and ima.. 2024. 5. 8. (Fig 3-A.19) Pellegrini-Stieda Disease_ Part 2 https://youtu.be/bYEyymwXAschttps://youtu.be/GSIg93UH3Oc ✅Main imaging findings of Pellegrini-Stieda DiseaseA large ossification adjacent to the medial femoral epicondyle with marrow fat signal or uniform fat suppressionIntraligamentous and periligamentous ossification of the MCL, with thickening and calcification at the proximal insertion and mid-substancePotential ossification proximal to the .. 2024. 5. 8. (Fig 3-A.18) Pellegrini-Stieda Disease: Part 1 https://youtu.be/wln3LeV0jOkhttps://youtu.be/GSIg93UH3Oc 📌 Pellegrini-Stieda disease: refers to intraligamentous or periligamentous calcification and ossification that can occur with chronic injuries of the medial collateral ligament (MCL). ✅ Schematic RepresentationThis condition can present with different appearances and locations around the MCL, as depicted in the provided schematic:I. Beak.. 2024. 5. 7. (Fig 3-A.17) Subacute to Chronic MCL Injury https://youtu.be/i4h2R0q3B2Uhttps://youtu.be/GSIg93UH3Oc ✅ Chronic Medial Collateral Ligament (MCL) Injuries➡️ Chronic MCL Imaging FindingsThickening of ligamentWaviness of fibersDiscontinuityincreased signalAbsence of subcutaneous edema/soft tissue swelling seen in acute injuries➡️ Importance of Recognizing Chronic InjuriesCan lead to progressive degenerative changes and loss of functionMay req.. 2024. 5. 7. (Fig 3-A.16) MCL Avulsion fracture https://youtu.be/_qSjjjH5v6c?si=vYrQsBic3OSHrdd3https://youtu.be/GSIg93UH3Oc CASE STUDY ✅Avulsion fracture at the medial collateral ligament's epicondylar attachment. ✅ Key findings on imaging include:Avulsion fracture of the MCL visible, without displacementContinuity of the fracture fragment with the MCL on MRIAssociated extracapsular hemorrhage appearing hyperintenseFracture line is hyperinte.. 2024. 5. 7. (Fig 3-A.14) Intra-Articular Entrapment of the MCL: Part 1, medial patellofemoral ligament, POL tear https://youtu.be/WtlYGjTYgmEhttps://youtu.be/GSIg93UH3Oc 📌 Intra-Articular Entrapment of the MCLAn entrapped ligament within the joint space (intra-articularly) leads to prolonged symptoms and delayed healing of the ligamentous injury, regardless of the patient's age. Less common injury patterns include entrapment of the ligament more proximally, beneath a reverse Segond fracture, or within the.. 2024. 5. 6. (Fig 3-A.13) Stener-like lesion of MCL, avulsed distal MCL retracted medially to the pes tendons. https://youtu.be/NW8l1pc2Mqshttps://youtu.be/GSIg93UH3Oc 📌Importance of Recognizing Stener-Like Lesion (SLL)Axial image: avulsed distal MCL retracted medial to the pes tendons and entrapped superficial to the pes anserinus tendonsCoronal image: shortened and bunched appearance of the MCLInterposed pes tendons preclude anatomic MCL healingCan lead to chronic knee valgus instability✅ Prevalence a.. 2024. 5. 6. (Fig 3-A.12) Wave Sign MCL Tear Without Stener-Like Lesion https://youtu.be/cSR45JIYK4ohttps://youtu.be/GSIg93UH3Oc 📌 The Wave Sign: Tears of the Distal Superficial Medial Collateral LigamentTears of the superficial medial collateral ligament (sMCL) most commonly involve the proximal or middle portion.The "wave sign" on MRI is essential for diagnosing medial collateral ligament tibial side avulsions.Waviness of the superficial MCL and injuries to other.. 2024. 5. 5. (Fig 3-A.11) Distal sMCL Tear: without Stener-Like Lesion https://youtu.be/3WQ89WLVmRghttps://youtu.be/GSIg93UH3Oc 📌Characteristics of Distal MCL TearsMay have a wavy or serpiginous ligamentous contour due to laxityRetracted tears may have a more serpiginous morphology, requiring surgical repairDistal sMCL insertion injuries do not heal well with nonoperative treatment📌Proximal vs. Distal MCL Tear DifferencesIn proximal sMCL tears, the ruptured end i.. 2024. 5. 5. (Fig 3-A.10) Grade II MCL Injury and Reconstruction https://youtu.be/6jrGiw3ry40https://youtu.be/GSIg93UH3Oc 📌 Management of Acute MCL InjuriesGrade I-II isolated MCL injuries should be managed non-operativelyEven for grade III tears, initial non-operative treatment is preferred if ACL is intact✅ Indications for Surgical TreatmentSevere chronic pain and valgus instability despite conservative managementAcute setting: superficial MCL torn from ti.. 2024. 5. 5. (Fig 3-A.09) Grade III Injury of the sMCL and Medial Patellofemoral Ligament Injuries https://youtu.be/Uzo9UbzmjNghttps://youtu.be/GSIg93UH3Oc 📌 MRI Findings in Grade 3 Superficial MCL InjuryComplete discontinuity of the proximal superficial MCL and adjacent soft tissue edema, indicating a full-thickness tear. 📌 Involvement of MPFL in MCL InjuriesInjuries of the superficial MCL can propagate anteriorly to involve the anterior MPFL.The MPFL merges with the fibers of the MCL at t.. 2024. 5. 5. (Fig 3-A.08) Grade II injury of the superficial medial collateral ligament (sMCL) https://youtu.be/89EzOdhgSuIhttps://youtu.be/GSIg93UH3Oc 📌 Grade 2 MCL Injury: MRI Findings✅ Key FindingsDisplacement of ligament fibers from boneHigh signal edema/hemorrhage around MCL fibersLigamentous attenuation or fluid separating torn fibersIntraligamentous hyperintensity and thickeningFocal or segmental ligament thickeningPossible bone contusions✅ Spectrum of InjuryGrade 2 represents a w.. 2024. 5. 5. (Fig 3-A.07) Grade I injury of the superficial medial collateral ligament (sMCL) https://youtu.be/uexw7Jtoomchttps://youtu.be/GSIg93UH3Oc 📌 Grading MCL Injuries on MRIInjury Patterns Injuries to the medial collateral ligament (MCL) of the knee are extremely common, often resulting from valgus loading forces. While proximal ruptures are more frequent, any combination of injury locations can occur.✅MRI Grading System Radiologists typically grade MCL injuries on MRI using a th.. 2024. 5. 5. (Fig 3-A.06) Medial Collateral Ligament Anatomy, Knee MRI, coronal and axial images https://youtu.be/XQwBRT9627ghttps://youtu.be/GSIg93UH3Oc "Visualizing MSK Radiology: A Practical Guide to Radiology Mastery"© 2022 MSK MRI Jee Eun Lee All Rights Reserved.No unauthorized reproduction, redistribution, or use for AI training.#MCL, #Medialknee, #POL, #kneeanatomy, #anatomyknee #sMCL, #dMCL 2024. 5. 4. (Fig 3-A.05) Medial Collateral Ligament Anatomy, Knee MRI, coronal and axial images https://youtu.be/XQwBRT9627ghttps://youtu.be/GSIg93UH3Oc 📌 Superficial Medial Collateral Ligament (sMCL)Band-like structure with one femoral and two tibial attachmentsMeasures around 1.5 cm anteroposterior and 9.5 cm longFemoral attachment: 3.2 mm proximal, 4.8 mm posterior to medial epicondyleProximal tibial attachment: Blends with distal semimembranosus tendon sheath, 10-12 mm distal to joint.. 2024. 5. 4. (Fig 3-A.04) MCL(medial collateral ligament) and POL(Posterior oblique ligament) Attachments https://youtu.be/5e3xuKWgdMIhttps://youtu.be/GSIg93UH3Oc 📌 Attachments of the medial collateral and posterior oblique ligaments1️⃣ sMCL-femoral attachmentHistorically reported to be attached to the medial epicondyle (ME)LaPrade et al.: Recent publications suggest the attachment is 3.2mm proximal and 4.8mm posterior to the ME Imperial College London: demonstrated that the sMCL covers the ME, wit.. 2024. 5. 4. (Fig 3-A.03) Posteromedial Knee Anatomy: Part 2 https://youtu.be/fwgIlrMuA3Mhttps://youtu.be/GSIg93UH3Oc 📌 Overview of the Posteromedial CornerThe posteromedial corner is defined by the area between the posterior margin of the superficial medial collateral ligament (sMCL) and the medial border of the posterior cruciate ligament (PCL).1️⃣ Posterior Oblique Ligament (POL)The POL's meniscal attachment, known as the POL capsular arm, is an exten.. 2024. 5. 4. (Fig 3-A.02) Posteromedial Knee Anatomy: Part 1 https://youtu.be/oauPy8m5WHUhttps://youtu.be/GSIg93UH3Oc 📌Anatomy of the Medial Side of the Knee: Two Approaches✅ Warren et al.'s Approach:Initially, Warren et al. divided the medial side into three layers:Layer I: Deep fasciaLayer II: Superficial MCLLayer III: Joint capsule and deep MCL✅ Robinson et al.'s Approach:A more recent description by Robinson et al. divides the medial side into thirds.. 2024. 5. 3. 이전 1 2 3 4 5 다음
