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a peculiar sound lacking resonance, heard on percussing an abnormally solid part.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.


Resonance heard on percussion over solid organs or when there is fluid in the thoracic cavity.
Medical Dictionary, © 2009 Farlex and Partners

Patient discussion about flatness

Q. what does the term flat affect means?

A. "Flat affect: A severe reduction in emotional expressiveness. People with depression and schizophrenia often show flat affect. A person with schizophrenia may not show the signs of normal emotion, perhaps may speak in a monotonous voice, have diminished facial expressions, and appear extremely apathetic. Also known as blunted affect."

www.medterms.com :)
couldn't said it better myself...:)

Q. Can flat feet be repaired by surgery? I have flat feet and I’m looking for all sorts of treatments for it- I heard there is a surgery for it- is it helpful?

A. As far as I know- they don’t treat flat feet that are asymptomatic. So first of all check if it bothers you. secondly there are 2 kinds of flat feet- rigid and flexible. There are different and treated differently. Not always a surgery (which is very painful and costly) is needed– I went to a Rolf method therapist by the advice of my orthopedic and it’s much better now. Ask an orthopedic.

Q. I think my son has flat foot, how to tell for sure? I didn't notice it before, he is 3 years old now and all shoes hurt him. Does it mean he has flat foot? what else can it be?

A. Pes planus (flat foot) is not a rare condition in toddlers, and may resolves spontaneously as the child grows. It is diagnosed clinically, i.e. by a doctor such as pediatrician or pediatric orthopedic surgeon, and radiographs are not universally indicated

More discussions about flatness
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References in periodicals archive ?
Figure 4 shows the flatness of a light guide plate determined using the single parameter method with different process parameters for microinjection molding.
The flatness is defined as the minimum distance between two parallel planes (parallel to the least square fit plane) that covers the measured surface.
Key words: flatness, CMM, measurements, quality, methods
It is shown in ([1]) that Condition (PE) implies weak flatness, but the converse is not true.
As the customer and I reviewed the drawing in more detail, I noticed (in the specific instructions toward the corner of the drawing) what I believe to be a very common misperception: "Flatness will be confirmed with a dial indicator using a surface plate as the datum." Before I went any further with the customer, I felt obligated to clear up some misunderstanding.
Play Pause, too, asserts a flatness with a surprising elasticity: For one thing, despite its schematic two-dimensionality, it conjures a genuine sensuality.
Traditionally, engineers have measured the flatness of the sealing surfaces by connecting a run-out gauge to the sealing surface and performing a radial trace.
A non-contact machine that can measure flatness, porosity, and the size and location of holes, and check for defects all within 60 seconds.
The gauge is used to measure kingpin length, wear, straightness and flatness of the bolster plate.
"The flatness of the media is especially critical for 16X recording because it minimizes the errors that can occur during high-speed recording," explained Tim Clatterbuck, Verbatim's Optical Storage Marketing Manager.
Pinpoint Laser Systems has introduced a new and improved flatness measuring and aligmnent kit.