The Hiden (Secrets) of Aikijutsu shown by Fredrick J, Lovret.

 I was watching a video about some 

of the Hiden (Secrets) of Aikijutsu

shown by Fredrick J, Lovret.

What I saw in there was use of a grab defense with the index finger held out straight during a counter grab. This was something I had read about written by Dennis Palumbo in his books on  training in Hakkou Ryu Jutsu in Japan.

The index finger is held out straight, because the pad of the palm at the index finger is used to press against a point on the opponent’s wrist, and that enables the counter-grab to work and take the opponent down.

Palumbo Sensei also described how being trained on that point in Japan was continually worked.  Which led to a bout of diarreah. Upon which time the other students then told him that was a common side effect during that training. I never experienced that myself. So I take that part of the story under advisement. 

Not long after that I was visiting my friend and mentor, Ernest Rothrock, and we discussed this and spent some time on that movement comparing it to the way the eagle claw is applied against the same grab. Each got an effect. The eagle claw grip using the fingers like pliers digging into the wrist  when it was used. The other hand formation using the pressure from the pad of the straight index finger to make it work.

Our conclusion, for the skilled practitioner both work. 

First he shows how this is used with the straight hand wrist grab.

Then he shows how this is applied against a cross hand wrist grab.

  

Next he demonstrates how this movement  works  against the foot.

 

Then  he demonstrated how the pad at the base of the big toe works the same way against  a foot. The foot is applied  with a rolling inward  and outward motion for the downing of the opponent.

 

This is how it is used against an opponent full body view.