Looking at the Big Picture: Considerations for Older Adults Post Lumbar Spine SurgeryLeineke, LoriGarcia Trepte, Alessandra N.GeriNotes
Somehow, when I wrote that post, I didn’t actuallylookat the photo I was showing you all as an example of How To Do It Right. And, worse, I ignored my own advice from the same tutorial: to actuallylookat the damned specimen while you’re right there with it. If I’d done eithe...
Oh, and we did get the smoking-gun images I wanted, of SMAs communicating with pneumatic spaces in the vertebrae via foramina in the neural canal. Often these foramina go up into the neural arch and spine, but in some cases – notably in pelicans and the occasional ratite – they go dow...
Armadillo lumbar vertebrae in posterior, anterior and right lateral views. So what are these processes? It’s hard to say for sure without having seen the fossils, or at least some better multi-view photos, but the obvious guess is that they are our old friends epipophyses, in extreme fo...
This one shows cross-sections of the cord at cervical, thoracic, lumbar, and sacral levels, for drawing ascending and descending pathways and thinking about how patterns of somatotopy come to exist. Somatotopy is the physical representation of the body in the central nervous system. A common abbr...
But that doesn’t mean much–you have neural canals to the bottom half of your sacrum, but your spinal cord stops around your first or second lumbar vertebra. From there on down, you just have nerve roots. So the shortest reflex arc from your big toe has to go up to your lower back...
The other sacro-lumbar expansion really is an expansion, but it’s not unique to sauropods and it has nothing to do with running the hind limbs. Most birds have a very large expansion of the spinal cord in the sacro-lumbar region called the glycogen body. As the name implies, it stores...
t so simple with sauropods. We all know that the neck of any tetrapod is made up of cervical vertebrae, and that the trunk is made up of dorsal vertebrae (subdivided into thoracic and lumbar vertebrae in the case of mammals). But how do we tell whether a given verebra is a posterior...
The obturator nerve arises from the spinal levels of the 2nd-4th lumbar vertebrae (L2-L4), exits the pelvis through the obturator canal behind the superior ramus of the pubis, and innervates the adductor muscles of the medial compartment of the thigh. The cutaneous branch of the obturator ner...
degenerated lumbar discs, and cirrhotic livers. The collaboration piece is key. I’m not a radiologist, and minimally I need a professional who can write up the machine specs and scan settings for the Materials and Methods section of the paper. But often the radiologist will see interesting th...