The Baseball Observer May 2015 vol 3 | Page 16

The Dreaded ACL Injury Everyone one has heard of one injury or another that afflict baseball players. But most don’t really know what they actually are or where the in the body they are actually located. After interviewing several Orthopedic Surgeons and discussions with other professionals we are giving a simplistic overview on different types of “common” injuries – their symptoms, causes, potential treatments and prevention to better educate players, parents and coaches – in laymen’s terms. This is educational, not intended to diagnose or give medical advice. Always seek medical attention and advice from a qualified licensed physician. First we have to know where the ACL (anterior cruciate ligament) is located, what it is and what its function is to understand the injury. ANATOMY 101 Three bones meet to form your knee joint: your thighbone (femur), shinbone (tibia), and kneecap (patella). Bones are connected to other bones by ligaments. There are four main ligaments in your knee. They act like strong cables to hold the bones together and keep your knee stable. Collateral Ligaments These are found on the sides of your knee. The medial collateral ligament is on the inside and the lateral collateral ligament is on the outside. They control the sideways motion of your knee. Cruciate Ligaments These are found inside your knee. They cross each other to form an "X" with the ACL in front and the PCL (posterior cruciate ligament) in back. Both ligaments control the back and forth motion of your knee. Basically the ACL and PCL work together to stabilize the knee and helps provide the hinge that allows the knee to remain stable while moving. The ACL’s exact purpose is to prevent