By PAM BELLUCK NEW YORK TIMES In the 100 years since the first moose swam into Lake Superior and set up shop on an island, they have mostly minded their moosely business, munching balsam fir and trying to evade hungry gray wolves. But now the moose of Isle Royale in Michigan have something to say — well, their bones do. Many of the moose, it turns out, have arthritis. And scientists believe ...

By PAM BELLUCK NEW YORK TIMES In the 100 years since the first moose swam into Lake Superior and set up shop on an island, they have mostly minded their moosely business, munching balsam fir and trying to evade hungry gray wolves. But now the moose of Isle Royale in Michigan have something to say — well, their bones do. Many of the moose, it turns out, have arthritis. And scientists believe ...

In the 100 years since the first moose swam into Lake Superior and set up shop on an island, they have mostly minded their moosely business, munching balsam fir and trying to evade hungry gray wolves. But now, the moose of Isle Royale have something to say -- well, their bones do. Many of the moose, it turns out, have arthritis.

Moose living on a remote Lake Superior island near the U.S.-Canada border have unlocked a mystery about how the bones of aging mammals including humans can come to suffer the ravages of arthritis.

Knee pain is usually caused by arthritis. There are three common types of arthritis: rheumatoid, traumatic, and osteoarthritis. When you injure your knee, it can cause traumatic arthritis. This is a condition that develops over time as damaged ligaments and or bones cause further damage to the knee structure and break down the articular cartilage. Rheumatoid arthritis causes the synovial membrane to produce too much fluid. The fluid overfills the joint space, thickens, and becomes inflamed c