Increadible - Program for anatomy students

This is payed program, but I post it here to show you that such program already exists.
http://www.teamlabbody.com/3dnote-en/story/index.html

Its having quite high quality images and 3D visualization of human body. It can even display changes of muscles, nerves and bones positions during movements of joins.

http://www.teamlabbody.com/3dnote-en/dictionary/blood_vessels/Profunda_brachii_artery/

Here you can see Radial nerve from back

































and from front




I hoped somebody could develop such program and it is already here.

Here is some presentation on Youtube:

Radial nerve schemas I.

Important note: This post is not finished. I have also images of male, where I would like to draw humerus, deltoid and radial nerve.


I have draw this schemas, which could not be 100% exact. This for illustration and it is based on inspection of muscles of the models I tied. I did not have any medical scans to be exact for radial nerve location. This drawings was again good training for my memory and orientation. Do you know what? I had a problem to find how the humerus should look in this position, commonly with ulna bone. I find out, there is one good point to start with. In a normal position, that is the normal position where medical pictures are usual, your elbow is at back, your palm is open to forward of you. As painters are used to make their sketches, some of them start with joint having shape like a cube. This is exactly case of posterior side of elbow (elbow viewed from back). You see 3 points, like 3 vertexes of cube. The last vertex is invisible and is orientated upwards. Just imagine a cube on a back side of elbow. This is a good starting point.

Normally, the posterior side of humerus (and elbow) is located at back. In takate kote alias box tie position, you have it placed to side. That is cca 90° rotation. Remember, what we are viewing, it is posterior view. This is that we often see when we check the position of wraps on riggers photos.

However, when you tie takate kote, and you stay behind back of your bunny, you see the interior side of the arm (arm = brachium, lat.).

My estimation of Radial nerve on Esinem's body

With permission of Esinem I publish this scheme which I made based on the muscles visible on the photo.

Yet I add the original photo of Esinem:

Radial nerve rotation

Note 1: Maybe better word instead rotation should be "pronation", but I am not sure. Pronation means turning back of forearm to front (supposed that hand is down beside body). I have seen a pronation movement on medical software, but this movement seemed to me unlikely, because only forearm turned, but the humerus bone of upper arm did not rotated. So in this article I suppose that humerus bone rotates when you try to give hand in takate kote position.

Note 2: This article concerns only one vulnerable area, that is placed just under Deltoid muscle. Another vulnerable area for TK positions is placed just above elbow, and you can identify it from medical/anatomy pictures.

For those who are interested on radial nerve location (concerning TK safety):

Scheme of Humerus bone - size cca 2 cm:
sizes of the humerus

View on non rotated arm, radial nerve:
"back" view on the arm
"back" view on the arm
"back" view on the arm 2

My schemes to illustrate how much the radial nerve "position changes" during 45° rotation:

Test of rotation of "arm" / humerus bone:

I took a pole and paper and draw the lines on it. According scheme that I have. The red line is radial nerve (a piece of wire that I turned around according scheme).

Rotated and non rotated:

Back side of shoulder would be on left and elbow on right side. These two images I use to paste them in schema, so that the lines that I have drawn, would fix schema.

Area located between black lines no. 2 and no. 3 would seem to me safe for face-down suspension, but because the arm have to be rotated 45° in Takate Kote position, then the radial position moves more up, too close to rope.

Non rotated:

Rotated:

Vertical:

Non rotated - rotated:

The dangers area no. 1

Results of the test:

This demonstration should show how much the radial nerve "changes position". The area from black line no. 2 to no 3. is the area I still speak about.

Result:
If you see the vertical image - from the test is possible to see that the radial nerve appears to be close to right side.

The marked area black lines 2 - 3:
It seems to me that the lower 1/2 is dangerous for face down suspension. In the very edge of the Deltoid it could be really dangerous to have ropes for suspension. Then, in the upper 1/2 of marked area, it could be not so dangerous for F-D susp. but for safety reasons we should to place the ropes above this area.

For side suspension and back suspension the marked area in black lines 2 - 3 would be very dangerous area, where the ropes wouldn't be placed!

What danger?

The danger, that is related with incorrect rope placement or too tight tie, is the possibility that you can damage nerve. Too tight tie can cause nerve compression and this can hurt it. If we speak about radial nerve, which is placed in hand, then the injury causes impossibility to use toe or index finger. It can take few weeks to heal the nerve. To prevent this, we should place rope on body parts, which have muscles strong enough to prevent nerve damage. Rigger has to check ropes correct position and fixation or check it during the bondage play, if the tied person moves with ropes.