![]() ![]() That means that the Alar ligament is doing its job. And it should be identical, or close to identical on left and right as you move. ![]() So, the periodontal space is what I have here (see above) it’s the distance between the C1 bone and that C2 bone on either side. And the new measurement involves the periodontal space, which is shown here, and C1-C2 overhang, which I’ll show on the next slide. And you can see these yellow ligaments coming from either side, going from that dens up to the skull. So, the dens is this tooth like process right there. doi: 10.3390/ijerph17051693.Īnd the measurement we’re going to be looking at today is a measurement of the Alar ligament, the Alar ligament comes from the dens, as you can see here. LINK TO THE STUDY: Int J Environ Res Public Health. 2020 Mar 5 17(5). There’s the citation off to the right there. It was finally published by Freeman and Katz. I’ve been involved with it off and on really for the last decade of trying to get this project moving and trying to get enough normal patients imaged. We’ve been waiting for this study for a long time. So, a new study has finally determined normal values for DMX. Meaning if something is unstable, its unstable when it moves, it’s not unstable just sitting there. (see: 2:04 – 2:14) Now this has a distinct advantage over a static MRI where the patient is lying face up as the patient is either seated or standing, so it’s weight bearing, hence it’s more likely to show issues and number two – the patient is moving and instability is a dynamic, not a static concept. So, the goal here is to try to see if things move too much. ![]() Hence, you’d know that the ligaments are supposed to prevent certain movements. One of the ways I’ve been talking about that we can look at dynamic imaging is something called the DMX or digital motion x-ray, and that’s merely an x ray while you’re moving your neck around. Dynamic would be something like DMX or a movement-based MRI where you’re moving around and they’re taking pictures. Obviously, a static image would be something like just a routine MRI where you’re lying face up and face up in a tube, and they go ahead and do your image. So, there are two types of imaging that can suggest cranial cervical instability. And that’s why this is so exciting.”īased on a new study looking at digital motion x-ray or DMX. “And so, the problem has always been trying to find a measurement that normal people don’t have at all. So, when we do things like Grabb-Oakes or Powers ratio or clivo-axial-angle, there’s some mixture there between patients who are totally normal and have no issues, but will have abnormal measurements, and patients who have Cranio-cervical instability who have abnormal measurements. So, one of the problems, however, with diagnosing Cranio-cervical instability that’s usually not talked about very often is that patients without CCI may also have similar measurements to patients with CCI. We’re going to really focus today more on the alar ligaments. And there’s lots of different ligaments up there. So, Cranio-cervical instability or also called “CCJ instability” means that the upper neck bones move around too much due to damaged or loose ligaments. And I’d like to introduce you to some interesting and really critical new data on Cranio-cervical instability diagnosis. part of a secondary survey or under the guidance of an authorized physician ensure this radiographic series is safe to perform, i.e.patients who feel unstable on their feet can sit in a chair for this examination.ensure the patient is aware when the examination is over as to avoid extended periods of time in that position. ![]()
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |