Lateral Meniscus Variant

Lateral meniscus variant with posterior root entirely attaching to intercondylar/meniscofemoral ligaments (coronal reformat, black arrow) and no tibial root attachment. There are at least partial capsular attachments; however, the cartilage defect (white arrows) subjacent to the meniscus (sagittal reformat, black arrow) suggests hypermobility. The meniscus is c-shaped, rather than discoid. Still on the Wrisberg spectrum?

https://www.ajronline.org/doi/full/10.2214/AJR.04.1785

Intermediate-weighted 3D CAIPIRINHA SPACE TSE reformats at 0.6 mm isotropic spatial resolution at 1.5T

14 y/o s/p Martial Arts injury. Noticed a growth on X-ray

Ticks and fleas. The osteochondroma is pretty easy to see. Also ligamentum mucosum/infrapatellar plica edema (sprain vs frictional inflammation) and something in the prefemoral fat.

How would you describe the hoffa's and pre femoral findings? 

What do you recommend as far as the osteochondroma for follow up (if anything?)

Phillip Tirman MD  

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PCL injury

57 y/o female skidded off bike. 

CR taken 1 month prior to MRI. ACL + PCL fibres are intact.

How old would you judge this injury? Recent month or older?

CR 10/2019

MRI 11/2019

Björn Jobke, MD

29-year-old man, 4 days post twisting injury

29M 4 days post twisting injury with ACL tear (yellow arrow)

Note acute avulsion Posterior Horn medial meniscal root (red arrow)

Blue arrow indicates torn Popliteofibular ligament

There are Gr I sprains of the LCL complex and Gr I Popliteal myotendinous strain

White Arrow indicate torn Arcuate ligament  with posterolateral pericapsular edema
 Excellent reference by Humberto Rosas