A small bone in the knee that scientists thought evolution was lost seems to be making a comeback, experts at Imperial College London say.
The Fabella is found in some people who are buried in the tendon just behind their knees. 19659007] Doctors think it is completely pointless, and you can live happily – many people.
However, people with arthritis seem to be more likely to own a Fabella.
The Imperial College team has published its findings in the Journal of Anatomy.
What is it?
From a medical point of view, the Fabella – which means small beans – is a sesame, ie it grows like a patella or in the tendon of a muscle patella.
How common is it?
Dr. Michael Berthaume and his colleagues at Imperial's Department of Bioengineering spent more than 150 years researching medical literature in 27 countries, including the UK, knees for longer than thought. "
Between 1918 and 2018, reports of the presence of Fabella bone in the knee increased, suggesting that it is three times as common today as it was 100 years ago.
The scientists' analysis showed that Fabella was present in 11% of the world population in 1918 and 39% in 2018.
The researchers estimated it with medical scans and medical evidence from a growing world population.
Why do some of us have that?
Dr. Berthaume said that nobody really knows the answer because it was never researched.
"The Fabella may behave like other sesamoid bones to reduce friction within the tendons, divert muscle forces, or increase the mechanical strength of this muscle as with the kneecap," he said.
"Or it could not do anything at all."
Do we need it?
In monkeys of the ancient world, the Fabella can act as a patella and increase the mechanical advantage of the muscle.
But as the ancestors of apes and humans evolved, it seemed to disappear.
Now that it has returned, according to experts, it only causes us problems.
People with osteoarthritis of the knee are double It is likely that there is little bone, but there is no evidence that it actually causes the problem or how.
The Fabella can also stand in the way of a knee replacement surgery and even cause pain and discomfort.
Why a comeback?
The theory says that everything has to do with nutrition.
The researchers concluded that better nutrition makes the average person taller and heavier, and that means we have longer tibias and larger calf muscles.
These changes put more pressure on the knee.
Since it is known that sesamoidal bones like the Fabella grow in response to the movements they cause and the forces exerted on them may explode, why is the bone more common than it used to be?
Why is he important?
If you find out how the small bone has risen again, doctors could help patients with knee problems.
You could also get an insight on the evolution of man in the last century.
First, however, they want to find out the age, sex, and location of the people most often affected by a fabella, and whether they are in one or both knees.