Understand Fryette's three laws of motion and how to remember them. Tested on COMLEX. I will always keep my videos free. All I ask is that you like and subscribe. Much love, #medEASY
Question: For law 2 flexion and extension, do we still name the SD for where it likes to go (ex., FS(l)R(l) meaning the restriction of the vertebra eases while flexing, sidebending left and rotating left)? Thank you!
GJ Alice Liou great question. In general, things are typically named for where they like to be. Your example is correct. In a flexed, sidebent, rotated left diagnosis, as in your example, I would expect to find restriction while sidebending to the right or rotating to the right. Often it’s difficult to assess what is more restricted when we think about flexion and extension.. so a common practice is to monitor vertebral landmarks by palpating the extensions of the vertebral bony processes on both sides of one vertebral body and seeing if they are symmetrical or not (example if T6 feels symmetrical just to the left and right of midline posterior on T6 during flexion but not during extension, this would support your diagnosis that indeed the position of ease is flexion because the vertebral body/bony extensions are symmetrical). When it comes to rotating and sidebending, it’s easier to assess through motion, but remember if there are imbalances in flexion and extension as we discussed it means your diagnosis will have a flexion or extension component, therefore it must follow law 2, therefore rotation and sidebending should be restricted in the same direction. Hope this helps! Like, subscribe, and share if you appreciated this help! Much love
@@madmed Thank you so much for the rapid reply and the thorough explanation. I am a first year med student in the DO program and your videos and replies are definitely very helpful. I have already subscribed to your channel and will recommend it to my classmates as well. I really appreciate you creating this channel and please continue to make more good videos like this.
@@madmed Thank you very much for the reply, and yes I think more OMM tutorial videos would be great b/c I haven't found any online so far except yours. I have another quick question about Law 1 and 2: I know Law 1 usually involves multiple vertebrae while Law 2 involves single vertebra, but is this rule absolute? Can Neutral SD involve only 1 vertebra and F/E SD involve multiple vertebrae? Thank you!
@@gjaliceliou282 I think I will continue with OMM for sure, with the goal for you to learn and to prepare you well for the COMLEX.. for free. Law 1 is more absolute than Law 2. For example, you can have T4, T5, T6 happen to have somatic dysfunctions (could be the same, could be different dysfunctions) and still fall under Law 2. But if something is in multiple vertebrae in sequence and similar in dysfunction/position of ease, it's much more likely to be Law 1. Note the difference, while multiple vertebral levels MAY be Law 2, it is more LIKELY Law 1 (esp when it's the same dysfunction essentially).. also if you find only single vertebral dysfunctions then highly unusual for this to be Law 1.. while multiple vertebral levels MAY be Law 2, single vertebral levels are highly UNLIKELY to be Law 1.
@@madmed I was referring to the lower thoracic spine. I have read different studies stating different things. So for the lower thoracic spine, if the spine is in extension, would the coupled motion be rotation with contralateral rotation or rotation with ipsilateral rotation.
Andy Mai the thoracic spine behaves generally as type two mechanics if only one vertebral level is involved, although there can be times when a group of vertebral levels are involved which would follow type 1 motion
