Baseball leagues often have fairly strict limits on how many innings pitchers can pitch or how many pitches a player can throw. But for girls playing fast-pitch softball, such guidelines are rare. Washington University sports medicine specialists have found that many pitchers aren't getting enough time to recover and are experiencing shoulder fatigue, pain, weakness and injury.
An injury to a flexor tendon is basically an injury to your muscle. The flexor muscles are the muscles that allow you to bend your fingers. These muscles are able to move your fingers through tendons, which are cord-like extensions that connect your muscle to your bone.