On the sides of the vertebrae, we will find that C1, overall, is wider than C2. C1 has the wider transverse processes as compared to C2. The transverse processes are the bony projections off the right and left side of each vertebrae.
So, given these bony landmarks and distinctions, when we are feeling through the back of the upper neck, C2 is most readily palpated. On the lateral sides, it is C1 that will be the widest and easiest to feel. |
In examining the facets of the atlas and axis, the articular surfaces on both are typically larger than the facet surfaces of the other cervical vertebrae below. Additionally, and very importantly, the articular surfaces on both C1 and the top of C2 face vertically - up and down. This orientation is a necessity as the top facets of C1 articulate with the cranium and must conform to the shape of the occiput.
But because the articular surface at C1 & C2 changes significantly, so will our application of pressure in unwinding them. And here, we must be a bit more creative in our engagement. |
We will use C1 to engage into both sets of articulations - C1 to Occiput, C1 (bottom) to C2 (top). The orientation of the facets requires that our pressure be, as much as possible, straight up (towards the head) or straight down (towards the feet). This is a challenge.
The space here, in general is quite crowded, with the auditory meatus and styloid process of the temporals along with the mandible (jaw) in rather close proximity. However, the wide transverse process of C1 is palpable and fairly easy to locate, and we can use it to compress and lever into our facet articulations with a reasonable degree of perpendicular pressure. Please note that in the pictures at right I am again not showing any sort of technique or 'proper' hand position. That is for a later section. I'm only showing the angle of attack. I do however recommend the supine position for this work. Also, in order to access the transverse process of C1, a practitioner may relax the local tissue by laterally tilting and slightly rotating the client's head to the same side. Only a small degree of tilt and rotation is required. This may help you to both palpate and engage the transverse process. |
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To locate facets throughout the spine, we're typically utilizing bony prominences to find our way, and the thoracic is no exception. It is helpful to first locate at least two easily identifiable bony points in order to then locate a thoracic facet - and in this case we'll use the appropriate spinous process and the attached rib.
The spinous processes can be counted from the bottom-up as well as the top-down. It is recomended that both methods be utilized, at least initially, in order to increase accuracy. Please refer to Practical 2. In counting thoracic spinous processes from the top down, it is often easiest to first locate C7 and C6. C7 will, more often than not, be the top "knobby" that is easily palpable. Above C7 there is quite often a rather large change both in the immediate palpability of C6 and in reduction in relative size. C6 will often feel quite small in comparison to C7 and will also typically feel and appear deeper into the body. Once C7 is identified, a practitioner may "walk" their fingers down the spinous processes, counting as they go. This little technique with our spinous processes is important in other ways; as we are counting and becoming accurate, we are also assessing the mobility of each vertebrae as we go. With palpation, we can engage the whole of each vertebrae "by its nose" and with our engagement, we can start to get a feel for how mobile the vertebrae is and where it may be restricted. As well, just with the spinous process in our fingers, we can feel quite a bit into the whole of the vertebrae. The more you work on this particular technique, the more you will feel. Your knowledge will increase while your accuracy improves. ... |
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As we walk our fingers down, for example, to T4, we can notice that the length of the "nose" of the spinous process can vary greatly. In this skeletal model we can note a significant difference between the length of the T5 spinous process as compared to T4. This variance in length will impact our accuracy if we are solely gauging our accuracy by the spinous processes alone.
Hence it is recommended that we utilize as many bony landmarks as available to build our accuracy and help to essentially "triangulate" the position of the facets. Luckily, the ribs are there to help... |
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Note the curvature of the ribs. It can be a source of confusion.
To help visualize the path and curvature of the ribs: the shape of the vertebrae and attached ribs can be thought of as resembling a "batwing" or the wing of a bird, and seeing this shape may help you trace the route. |
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Once some familiarity has been established with the vertebrae and ribs, accurately finding the facet becomes a quicker process. The key is often just initially taking the time to figure out where you are and familiarize yourself with the territory, even if it adds extra time to your session. Accuracy is not always easy but your attention here will pay off. Your level of detail will be noted by your clients and you will stand out amongst the crowd. Accuracy is also like target practice - you will never be perfect but expect to get better with practice. And as your accuracy gets better, you will get better. Your clients will get better. |
Ida Rolf, founder of Rolfing Structural Integration, was particularly interested in T12 as an important bone and location in the body. In Theoretics 1 we discussed how the T12 area undergoes a drastic change in movement potential (how well vertebrae can move) and we note that at this junction, the movement potential of the vertebrae significantly decreases as we go up into the thoracic by virtue of a plethora of attachments, most notably - the ribs. The ribs complicate movement, and significantly add to spacial restrictions in the structure. Because of this, we may state with reasonable certainty that the T12 juncture signals a negative change in the movement potential of the vertebrae as we go up the spine and into the thoracic. T12 is a junction - a changeover.
Here, we may note another important distinction with T12 - that it sees the most significant change in facet orientation of any vertebrae in the spine. This adds a layer of complexity to T12 and it's articulations. And without hesitation, we may also say that the joint movement between T12 & L1 will be mechanically different than the movement between T12 & T11. |