This study is being done to test whether taking testosterone can prevent loss of muscle mass
and strength due to anterior cruciate ligament (ACL) reconstructive surgery. Testosterone is
the principal male sex hormone and an anabolic (muscle promoting) steroid. It is essential
for the development of male reproductive tissues and promotes increased muscle, bone mass,
and the growth of body hair.
The investigators hope to learn whether testosterone given before and after ACL
reconstructive surgery will increase muscle mass and strength and potentially improve
recovery time following surgery.