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vegomatic
24 Posts |
 Posted - 07/16/2007 : 00:33:36
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And the beat goes on. Sigh:
http://news.yahoo.com/s/nm/20070715/sc_nm/humans_walking_dc
Blame that bad back on your ancestors
By Maggie Fox, Health and Science Editor
Sun Jul 15, 12:05 AM ET
WASHINGTON (Reuters) - A spine specialist trying to figure out why people so often have bad backs says he has come up with a new theory about when and how early humans evolved the ability to walk upright.
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The uncannily human-looking backbone of a 21 million-year-old precursor of humans and apes gives the first clue, said Dr. Aaron Filler of the Cedars Sinai Medical Center in Los Angeles.
A major change in the vertebrae that allowed this pre-human to stand upright and carry things also made it easier to crush and strain the spongy discs between each vertebra, Filler, a medical doctor with a doctorate in anthropology proposes.
That, in turn, explains why back pain is a leading cause of disability, he said.
Writing in the journal Neurosurgical Focus on Sunday, Filler said one main clue was a bone feature called the transverse process, which sticks out from the side of the hollow, round vertebrae, Filler said in a telephone interview. This is where muscles attach to the spine.
"The vertebra is transformed in a way that literally reverses the mechanics of the spine," Filler said. "The bone lever of the vertebrae gets switched from bending the spine forward to bending the spine back."
Most vertebrates are oriented forward, to walk on all fours. The transverse process is at the front of each vertebra, facing the animal's belly. This is true of monkeys, too.
But in humans and in the 21 million-year-old fossil of a creature called Morotopithecus bishopi, a tree-dwelling, ape-like creature that lived in what is now Uganda, the transverse process has moved backward, behind the opening for the spinal cord.
Great apes, such as chimpanzees, share this feature.
'THE UPRIGHT APE'
The fossil was discovered in the 1960s but no one noticed the important change until 1997, when paleontologist Laura MacLatchy of the State University of New York at Stony Brook reported on the remarkable features of Morotopithecus.
"That means that upright posture bipedalism goes back 20 million years, not just 5 or 6 million years," said Filler.
In his study and in a book published last week called "The Upright Ape -- a new origin of the Species," Filler argues that this common ancestor, and ancestors going back many millions of years before, walked upright. Homo sapiens, the human species, continued upright, while apes evolved back toward all fours, he argues.
"When you look at most ape species, their spines and most of their bodies still look pretty monkey-like," Filler said.
He also said humans evolved a new structure of muscles that pull the body from side to side while standing.
"This is very important for carrying an infant or child," Filler said. "From the point of view of back pain, now we have big muscles doing this heavy work that never did before. They can get torn and strained."
The backward orientation also allows the cushiony discs to get crushed, Filler said. "In most animals the vertebrae get spread apart when they carry infants on their backs when on all fours," he said.
What further differentiates humans from apes is the positioning of the place where the spine attaches to the hips, said Filler, who dissected the backbones of dead gibbons, chimpanzees and macaque monkeys and compared them to bones from living and extinct species of other animals and fossils from various pre-humans.
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mizlorinj
USA
490 Posts |
Posted - 07/16/2007 : 06:41:17
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Pathetic, isn't it? THEORY is the key word for me.
-Lori |
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Dave
USA
1864 Posts |
Posted - 07/16/2007 : 08:11:32
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The fact that anyone can take this seriously points out the absurdity of "modern" medicine when it comes to trying to explain things we just do not understand.
For man to claim that natural evolution of humans is somehow flawed is just absolutely ridiculous. How pompous for us to claim that our tiny little brains can possibly understand the vast complexity of how and why our bodies adapted over millions of years to their current configuration.
Perhaps the chimpanzees with their superior vertebrae will one day rise up and overcome the human race and rule the planet. Hmm... where have I heard that one before... |
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weatherman
USA
184 Posts |
Posted - 07/16/2007 : 09:36:57
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Marc Sopher's book has a good example of the absurdity of this theory. What would the life expectancy of a caveman with a "bad back" be? We would have been extinct long ago.
Weatherman
"Good judgement comes from experience. Experience comes from bad judgement." |
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Stryder
686 Posts |
Posted - 07/16/2007 : 15:24:20
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It gets worse, Readers Digest - July 2007. My fav is the "Magic Spine Wand". Oooooo, I want one of those ;-) -Stryder
1. End Back Pain Agony
2. New Neurostimulator: A Miracle?
3. Infrared Belts: Reducing Pain
4. The Magic Spine Wand
5. Flexible Fusion for Greater Movement
6. Stem Cells to the Rescue
7. Grow a New Backbone
8. It's All in Your Bed
The RD article in all its glory... http://www.rd.com/content/chronic-back-pain-breakthroughs-/
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Gemma_Louise
United Kingdom
68 Posts |
Posted - 07/16/2007 : 15:27:27
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| LOL! That has made me chuckle! |
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Stryder
686 Posts |
Posted - 07/16/2007 : 16:00:26
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Gosh, here's another Reader Digest article from June 2005.
http://www.tmshelp.com/forum/topic.asp?TOPIC_ID=3686
It contains a few interesting Sarno-esque points intermixed with the expected drivel from the medical/industrial complex. -Stryder |
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mikescott_98
USA
49 Posts |
Posted - 07/17/2007 : 07:05:00
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| Soooo...50 years ago, before the current back pain epidemic, we were monkeys. I will have to go look at those old photos of my grand mother and see if she looks more like me or King Kong. |
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Stryder
686 Posts |
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Bat Ears
USA
14 Posts |
Posted - 07/18/2007 : 09:23:36
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| You know how you can tell if a horse is in pain, right? (Of course. It's obvious by the way they stand and breathe and tremble.) Is a badly sway-backed horse in pain? (Remember the horse on the "Little Rascals?") Not in my experience. They look fine. My brother who is a big man had a very badly sway-backed horse for many years and even rode her frequently. She was not suffering. This is proof to me that major spinal deformities which have to be causing disk compression don't cause pain, at least like we humans suffer, and that a horizontal posture rather than upright bipedalism is no guarantee of spinal health. |
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"Blame that bad back on your ancestors"
