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New ligament discovered‬ in the human knee


Two knee surgeons at University Hospitals Leuven have discovered a previously unknown ligament in the human knee. This ligament appears to play an important role in patients with anterior cruciate ligament (ACL) tears.

The human body continues to yield new discoveries. The ligament, which was first postulated by a French surgeon in 1879, could explain why some patients who undergo anterior cruciate ligament repairs continue to experience symptoms of their knee “giving way.”



U.S. Records Highest Number Of Malaria Cases In 40 Years

In 2011, the U.S. recorded 1,925 malaria cases, the Centers for Disease Control and Prevention, said Friday. This is the highest number of cases reported since 1971 and represents a 48 percent increase from 2008.

All but five of the malaria cases were imported from other countries. Most of them came from Africa, specifically West Africa. One person caught the disease in the laboratory.

Both travel and inadequate prevention measures might have contributed to the rise in malaria, the scientists write in the Morbidity and Mortality Weekly Report. “These increases appear to be similar to those being reported in other parts of the world … Despite progress in reducing the number of malaria cases in regions where malaria is endemic, international travel appears to be growing steadily, and use of appropriate prevention measures by travelers is still inadequate.”

Interestingly, airline crews make up only a very small number of malaria cases in the states. But they might increase, as well, given a bump in the number of direct flights from the U.S. to West Africa, the scientists said. 

Learn more.

Top: Number of malaria cases diagnosed in each state during 2011 (Centers for Disease Control and Prevention)

Bottom: The malaria parasite Plasmodium gallinaceum (purple) are caught in the scanning electron microscope invading a mosquito’s gut (yellow). (NIAID/

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