These indentations are created by a short ligament stretching between the posterior superior iliac spine and the skin.

It is one of two such spines on the posterior surface, the other being the posterior superior iliac spine.

It is thinner at the center than at the extremities, and ends in the anterior and posterior superior iliac spines.

The pain is often a mild to moderate ache around the dimple or posterior superior iliac spine (PSIS) region.

The posterior superior iliac spine serves for the attachment of the oblique portion of the posterior sacroiliac ligaments and the multifidus.

The multifidus muscle in the sacral region attaches to the medial surface of posterior superior iliac spine, the posterior sacroiliac ligaments and several places to the sacrum.

The posterior border of the ala, shorter than the anterior, also presents two projections separated by a notch, the posterior superior iliac spine and the posterior inferior iliac spine.

The iliac crest stretches posteriorly from the anterior superior iliac spine (ASIS) to the posterior superior iliac spine (PSIS).

The apparent masses of the subjects were determined together with transmissibilities measured from the seat to various locations on the body surface: the upper and lower abdominal wall, at L3, over the posterior superior iliac spine and the iliac crest.

The sacrotuberous ligament is attached by its broad base to the posterior superior iliac spine, the posterior sacroiliac ligaments (with which it is partly blended), to the lower transverse sacral tubercles and the lateral margins of the lower sacrum and upper coccyx.

Now the old man tried to help himself with his own psi.

I've never tried psi on anything so far away before.

"To make him feel a little better, after what happened back at Psi 2000."

"But how does it help to call these things psi?"

I wanted to use my psi on him, to find out what he meant by that?

My psi had been slowly going dead on me all this time.

As though he needed the aid of psi to tell that!

It was this way with the psi pressure in the city.

If my psi was really shut down the way he wanted it to be, then I?

You have to be in the right frame of mind to use a psi power.

The nature of my psi is this: People forget me.

His psi was really useful in this sort of situation.

A relatively high working pressure of 250 psi could be used.

They generally use low pressure air, almost always below 3 psi.

When they shut the well in, it went right back to 1,835 psi.

But I can, and so could anyone else with any sort psi sensitivity.

Tell you, I've got to have psi coverage to get that girl out.

He didn't have to use his psi on me again.

Something was desperately wrong with the system of training psi workers.

They are low pressure - typically 4 to 10 psi.

"We got a little ahead of schedule at Psi 2000."

I wish we humans were better at psi, he thought.

Is it the surrounding air pressure of about 15 psi?

I've felt a psi blast before, but nothing like that!

The psi wheels also all moved together, but not after each character.

The concrete used for the building is 18,000 pounds per square inch.

Or would have had her pounds per square inch permitted.

Air pressure at Earth's surface is 14.7 pounds per square inch.

In fact air pushes down on us with a force of 14.7 pounds per square inch.

This is equivalent to a weight of about 150 to 1,000 pounds per square inch.

The door, which is said to be able to withstand 2,100 pounds per square inch, opened.

The water pressure at that depth is 6,000 pounds per square inch.

It must also be inflated to between 7.5 and 8.5 pounds per square inch.

Normal operating pressure is above 2,000 pounds per square inch.

The rock broke apart at 4033.01435 pounds per square inch.

The boiler working pressure was 235-240 pounds per square inch.

It was built to withstand water pressure of 200 pounds per square inch, he said.

Already it was difficult to breathe; pressure must now be down to one or two pounds per square inch.

Therefore, 1 atmosphere is approximately 14.696 pounds per square inch.

"We're only talking about a difference of 32 pounds per square inch pressure.

And they had reduced pressure in the reactor to 1,000 pounds per square inch, he said.

"There was a pressure drop of about 16 pounds per square inch between the two data points," he said in an interview.

The psychological pressure was at least five thousand pounds per square inch and growing by the second.

The system kept the pressure inside the cabin at exactly 14.7 pounds per square inch, the same as sea level.

Readings below 0.3 pounds per square inch were noted but not reported.

The sludge was cooked for 90 minutes at 1,200 pounds per square inch.

The usual atmospheric pressure on the earth's surface is 14.7 pounds per square inch.

Most water systems supply water at around 40 pounds per square inch.

Inside the main, temperatures reach 400 degrees and pressure is 150 pounds per square inch.

One witness testified last week that the force of the impact would have been 71,000 pounds per square inch.

But you're not the only person who has psi ability.

I'm not much different than you or any other psi.

I've never tried psi on anything so far away before.

I have some psi, but not enough of the right kind.

Especially if you do turn out to be a psi focus.

Now the old man tried to help himself with his own psi.

What makes you think I've been using my psi power to drive away women?

It was this way with the psi pressure on the city.

As though he needed the aid of psi to tell that!

They generally use low pressure air, almost always below 3 psi.

As you know, the human factor's been a big problem for all psi research.

My psi had been slowly going dead on me all this time.

You have to be in the right frame of mind to use a psi power.

I warned you not to use psi in the game!

The nature of my psi is this: People forget me.

His psi was really useful in this sort of situation.

She has been injured in the head, the site of psi.

Something was desperately wrong with the system of training psi workers.

Nobody, for all of his or her psi power, really understood me.

It seemed like forever since I'd even tried to use my psi.

I've always had pretty low psi, though, and she didn't turn around.

Tell you, I've got to have psi coverage to get that girl out.

Funny, after all the years of work, we still don't know much about psi.

It's easy if you're an energy being with a lot of psi powers.

Psi Corps is everything anyone could hope it would be.