The evidence comes from DNA extracted from a 40, 000-year-old leg bone found in a cave near Beijing.
Then a steel or titanium rod is placed inside the hollow leg bone to reconnect it where it broke.
One danger of the procedure is that the leg bone could break, says Richardson, particularly because it's the bone that just finished healing.
The team managed to extract genetic material from an ancient leg bone found in 2003 at the site of Tianyuan Cave outside Beijing.
Over the course of three expeditions, which began in 2006, researchers from the Canadian Museum of Nature collected 30 fragments of fossilised leg bone from Ellesmere Island in Canada.
In 2007, Dinosauria's paleontologists uncovered an unusually complete allosaurus in the Dana Quarry, which proved even more unusual in the laboratory: As the head was chipped from the matrix, a stegosaurus leg bone was found with it.
Spain's fragility is one you know well: the leg bone of an economy in a recession estimated to last two years is connected to the knee bone of undercapitalised banks is connected to the thigh bone of regions with debts they can't repay is connected to the hip bone of a government which cannot borrow at affordable rates.
That, combined with the constant pounding Ware endured through an entire season of basketball, may have created small stress fractures in the tibia and fibula bones in his lower leg, causing his bone to snap when he took a bad step.
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With defenseman Tyler Myers set to miss the rest of the season with a broken bone in his leg, Chad Ruhwedel made his NHL debut shortly after signing a two-year contract with Buffalo.
He replaced Tyler Myers in the lineup, after the defenseman was ruled out for the remainder of the season after he broke a bone in his leg blocking a shot in a 5-1 loss to Montreal on Thursday.
Deng had to pull out of the Eurobasket tournament, where his British teammates are competing in Bulgaria between September 7-20, due to a stress fracture to a bone in his leg, an injury that kept him out of action for much of last season.
The front room of the shop had been filled with the smell of meat, and my grandfather had stood and looked around at the hams and sausages hanging from the rafters, soup bones and square bacon slabs in the cold counter window, the skinned red lamb with its sharp little teeth lying on the block while Luka cleaved the bone of the leg away.
When Jalaine Sommers' 5-year-old rottweiler, Clyde, was diagnosed with an aggressive form of bone cancer of the leg, her vet recommended amputation and chemotherapy.
Diagnosed with bone cancer in her left leg at the age of 11, Yu eventually had to have part of it removed.
Orthopedic surgeon Dr. Saul Kaplan of Springfield, Virginia, says Ware may have twisted his leg as he landed, causing the bone to snap.
Her femur shattered, and before the muscles could tighten, she straightened the leg with her own hands so the bone shards wouldn't tear into her artery.
"I look down and I see my bone is 6 inches out of my leg and I go into automatic shock, " he told reporters at a news conference.
"The bone's 6 inches out of his leg and all he's yelling is, 'Win the game, win the game, '" Pitino said.
When he landed, his right leg snapped midway between his ankle and knee, the bone skewing almost at a right angle.
Diagnosed with a rare form of bone cancer when he was nine years old, Sundquist had his left leg amputated a year later.
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