What is the annual cost (lost wages, medical expenses, etc.) resulting
from lawn mower injuries in the U.S.

Does this answer your question?

?Upward of 60,000 lawn mower injuries occur annually in the United
States with most of these involving the lower extremities (Love,
1988). Injuries can range from simple lacerations to more severe
fractures and amputations. The setting for these injuries is
inherently dirty so a wide variety of pathogens will be present. The
combination of pathogens and severity of injury leads to a prolonged
and expensive treatment course with an estimated annual cost of 475
million dollars.?
EMEDICINE.COM
http://www.emedicine.com/orthoped/topic601.htm
(WARNING: There are also graphic images of injuries on this particular
page of the site so if you have a weaker disposition or you have young
children present you should use caution when opening this page. Most
the potentially offensive images are lower down the page.)

Please let me know if this sufficiently answers your question.

Regards;
tutuzdad-ga