The Black Line Sign on Knee MRI

👉 🎓 Need a Mentor to Master MSK MRI? https://www.onlinemskfellowship.com/ wNtmIv0 📚 Join 2k radiologists in my free MSK community here: https://www.skool.com/mskrad VQe3IND Learn about the black line sign on knee MRI. It is a hypointense line in the cartilage of the trochlea femoris, see on on axial / transverse images of the knee on MRI. It is actually a cartilage fissure. However, frequently the surface of the cartilage may remain intact and the cartilage unremarkable during arthroscopy but sometimes surgeons can probe it during arthroscopy. In this video I show you some examples of this sign and discuss its relevance and etiology a bit and show you one important differential diagnosis. References: https://link.springer.com/article/10.... https://www.researchgate.net/publicat... #radiology #mri #knee