Saturday, December 17, 2011

I want to say hello

I want to say hello to all visitors, I'm glad you're going here. It gives me good feeling, when I know, the blog and work I have done has sense. Especially thanks to the visitors, who persist often going here. Since begin of November till today this blog has next 2000 unique visits. Just for interest, here are people from London and Nottingham (UK), Greensboro (North Carolina), Zeewolde (Netherlands), Santander (Spain), Vienna (Austria) and others. I still hope, that the sense of this blog will be fulfilled if visitors, who has learned something from here and maybe found their own way how to use rope, will come to bondage forum to share their experiences (or to learn more)... But the best thing would be to know if you had have some problems, difficulties to understand my tutorials and if you could to share your new ideas, your own techniques with others. Especially photos or descriptions of procedures - how you do it... I hope you will keep continue going here and will enjoy Christmas!

Good luck!

Johny the Rigger

Tuesday, July 12, 2011

working notes

Here are just few images from my latest tries. It serves just as my temporal working notes.


Target:  To tie Achenki Denke's style TK3:  Example image by Pedro
Conditions: Excluding the dangerous waist loops. I have just cca 1.5 m of rope, so I need to do some simple variant.
Procedure: To make the bottom of hexagon I tie the hands and create Munter hitch.
Target pattern:  horizontal X shape or horizontal figure eight


Procedure:

 Go around hands, backwards, up and forwards:



Go backwards on left side, up and forwards:


Munter hitch prepare: go around the left diagonal rope and cross the lines .


Down under hand wraps


Into hole and tight.


And finish in harper's way.



Monday, July 4, 2011

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.

Sunday, July 3, 2011

Animations of bones, blood vessels and nerves

The animations are accessible here:

Radial nerve location & animation (For TK2 & TK3 takate kote


(The article is published for short time only, because the images used in animations are taken from demonstration video, not from licensed program. If you found this animations beneficial to you, you should save them in your computer.)


Now you can watch this site to study if you are interested:
http://www.getbodysmart.com/

Main bones of upper limbs


Main bones of lower limbs


You can click on right to see more details about the specific bone.

This tutorial is really great! Just click on "Deltoid" and then click and drag scroll-bar!
Muscles of upper limb (that act on arm)


Muscles of upper limb (that act on forearm)


You can also click the blue links "flexes", "medially rotate" and "adduct" to get the limb movement!

Muscles of lower limb (that act on posterior thigh - Femur)


Muscles of lower limb (that act on Tibia & Fibula)


Arteries - click on the links on right to see where is certain artery
Note: The deep artery of the arm / "deep brachial" is properly called arteria profunda brachii.

And Veins:


Main nerves of limbs


 Click on right side on number 2 to see lower limbs:

Anatomy/Surgery images for those interested in bondage safety

These images are concerning vulnerable areas of limbs. It is good to be concerned in bondage safety. For example in Takate Kote ties we want to know which arteries we could restrain if we would tight the rope in incorrect place or too strong. Especially when some people are doing suspension they should know where the arteries and nerves are because it is possible to damage the nerves or to stop blood circulation in limbs. And because we don"t want anybody get hurt, we study anatomy and all the stuff around bondage safety.

If you click on thumbnails you open images that are hosted on this site - book Surgical Anatomy by Joseph Maclise.

You can find more on internet if you want to look, just search keywords like brachial, axillary, axillae, elbow, wrist. General problem when looking for anatomy images is that we would need special software that is not free, to get 3d images, animations etc, to see were nerves go from and to. Only good surgery images and software for surgery could provide that. Because for good orientation in the space man needs some points like muscles, arteries, veins.

Here is description of inner side of upper arm (not concertning radial nerve)
Upper arm: page

Upper arm & shoulder


Page Plate11
A. Subclavian vein;
   a, the axillary vein;
   a *, the basilic vein, having the internal cutaneous nerve lying on it.
B. Subclavian artery, lying on F, the first rib;
   b, the axillary artery;
  b *, the brachial artery, accompanied by the median nerve and venae comites.
C. Brachial plexus of nerves; c*, the median nerve.
S. Cephalic vein


This is Same page Plate 12 deeoer view to the same front area, when the arm is lifted & supported. You can see the Pectoralis minor (lesser Pectoral muscle: H,K) which is cut. Pectoralis minor lies under Pectoralis major (I), which is removed.

A. Axillary vein, cut and tied;
    a, the basilic vein, cut.
B. Axillary artery;
   b, brachial artery, in the upper part of its course, having h, the median nerve, lying rather to its outer side;
   b*, the artery in the lower part of its course, with the median nerve to its inner side.



Page Plate13

A. Axillary vein
  a - the common trunk of the venae comites, entering the axillary vein.
B. Axillary artery, crossed by one root of the median nerve;
   b - basilic vein,
   a- the axillary vein






Lower arm & upper arm above elbow: 


Page Plate15

H. Radial artery at its middle.
Upper arm inner side:
D. Cephalic vein, with the external cutaneous nerve (left, blue, big arc, outer side)
B. Basilic vein, with the internal cutaneous nerve. (right, blue, inner side)










Same page Plate 16

B. Basilic vein, cut.
C. Brachial artery.
D. Median nerve; d, the ulnar nerve.
F. Origin of radial artery.










Hands


page Plate 17:


B. Median nerve; its branches to the thumb and fin
D. Ulnar nerve; E e e, its continuation branching to the little and ring fingers












Same page Plate 18 
H. Ulnar nerve; h, superficial branches given to the fingers. I
















Same page Plate 19
C. End of the radial nerve distributed over the back of the hand, to two of the fingers and the thumb.
D. Dorsal branch of the ulnar nerve supplying the back of the hand and the three ou












Legs - thighs



Page Plate27
f. The middle cutaneous nerve

veins:
d. A common venous trunk, formed by branches from the thigh and abdomen, and joining-- e
e. The saphenous vein.
g. Femoral lymphatic glands.
h. Superficial external iliac vein.
i. Superficial epigastric vein.







page plate28
M. The saphenous vein.N. A tributary vein coming from the fore part of the thigh.










same page Plate 29

I. The femoral vein.
K. The femoral artery.
O. The saphena vein.








page plate 30
N. The femoral artery; n, its profunda branch.
O. The femoral vein
P. The saphena vein









Schemes of veins and arteries
This image is from: http://www.rsdrx.com


Other great sources:
Google translator - for translation of Latin names

http://www.sciencephoto.com/media/114611/enlarge

Arteries, nerves and muscles of arm


Radiology site 

http://www.info-radiologie.ch/hip-radiography.php
many of images with descriptions here, but I miss upper arm and side views.
http://www.info-radiologie.ch/anatomy-mri-wrist.php


http://www.imaios.com


You can see there wonderful scans of arms, where also you see the important stuff of muscles (Deltoid, etc)








Also fascinating images (magnetic resonance) of circularity system: saradiology.blogspot.com

And here high quality anatomy schemes: http://imaging.consult.com (sign up free).


Another good site with images of muscles right on bones:

http://www.rad.washington.edu










Really Wonderful site - Magnetic resonance images of inside of human body
http://www.imaios.com/en/e-Anatomy/Limbs

Monday, June 27, 2011

Trainning a suspension

Here are some photos from my training a suspension. Only with figurine. Right knee should stay on ground as a support.