← All decks
Radiology
Magnetic Resonance Imaging of the Knee
Built from Fundamentals of Diagnostic Radiology
What’s inside
1 sections · 69 slides
Overview
- Why knee MR is ordered
- What this overview covers
- Core imaging protocol
- Conventional spin echo versus fast spin echo for menisci
- What each imaging plane is for
- Coronal and axial images need T2 weighting
- Normal meniscus on MR
- Normal meniscus: uniform low signal
- Intrasubstance degeneration
- Intrasubstance degeneration in the posterior horn
- Diagnosing a meniscal tear
- Meniscal tear reaching the inferior surface
- Radial (parrot beak) tear
- Radial tear drawn in sagittal and coronal planes
- Tears are easier to miss when the ACL is torn
- Bucket-handle tear
- How a bucket-handle tear hides the second bow-tie
- Bucket-handle tear: displaced handle (drawing)
- Bucket-handle tear: one bow-tie instead of two
- Displaced bucket-handle fragment in the notch
- Discoid meniscus: a large meniscus
- Recognizing a discoid meniscus
- Discoid lateral meniscus extending into the notch
- Discoid lateral meniscus: three bow-tie slices
- Meniscal cysts
- Meniscal cyst with swollen anterior horn
- Meniscal cyst signal on T2
- Transverse ligament pseudotear
- Transverse ligament pseudotear
- Anterior cruciate ligament (ACL)
- Normal anterior cruciate ligament
- Torn anterior cruciate ligament
- Posterior cruciate ligament (PCL)
- Normal posterior cruciate ligament
- Torn posterior cruciate ligament
- Meniscofemoral ligaments
- Two meniscofemoral ligaments around the PCL
- Loose bodies in the intercondylar notch
- Ligament of Wrisberg behind the PCL
- Meniscofemoral ligament pseudotear
- Pseudotear from the ligament of Humphrey
- Medial collateral ligament (MCL)
- MCL injury grades
- Grade 1 MCL sprain
- Torn medial collateral ligament
- Meniscocapsular separation
- Meniscocapsular separation
- Lateral collateral ligament (LCL) complex
- Lateral collateral ligament tear
- Chondromalacia patella
- Patellar dislocation and cartilage defect
- Chondral defect in the patella
- Patellar plica
- Medial patellar plica
- Bone contusions (bruises)
- Contusion to osteochondritis dissecans
- Bone contusion of the lateral femoral condyle
- Pivot-shift contusion pattern
- Pivot-shift contusion pattern
- Fractures about the knee
- Bursitis around the knee
- Pes anserinus bursitis
- Pes anserinus bursitis
- Semimembranosus tibial collateral ligament bursa
- Semimembranosus tibial collateral ligament bursa
- 90-95%
- Key takeaways
- References
- Brant and Helms' Fundamentals of Diagnostic Radiology