Although its proportions are accentuated by the birds’ small head and diminutive tarsi and toes, this bone, whose function it is to support the substantial bulk of flight muscles, is the key to ...

The sinus tarsi is a small, bony channel located on the outside of the foot between the ankle and heel bone. Sinus tarsi syndrome is when increased pressure in this area, or problems with the ...

Noninvasive treatment methods for sinus tarsi syndrome can often help improve symptoms and allow a full recovery. However, in some cases, surgery may be necessary to resolve symptoms. Sinus tarsi ...

"The Birds from the Diego Ramirez population were significantly heavier and larger (with a longer and wider bill and longer tarsi), but they had a significantly shorter tail," the study said.