In recent years, there has been discussion on why women and
young girls are more susceptible to ACL tears. There are many theories on the
reasons why, but today we will examine a main anatomic difference between men
and women that is a contributing factor: the Q-Angle and wider pelvis.
The Q-angle is the angle at which the femur (upper leg bone)
meets the tibia (lower leg bone). The Q-angle is determined by three areas of
the human anatomy – the Anterior Superior Iliac Spine (ASIS), the center of the
kneecap (patella) and the tibia tubercle.
The Q-angle is basically a line drawn from the ASIS down to the center
of the kneecap to the tibia tubercle (see picture below).
The Q-angle in women is greater because women are
anatomically built with a wider pelvis than men. A normal Q-angle in men is 14 degrees, while
women have a normal angle of 17 degrees. The greater the angle, the more at risk
the person is for knee injuries, including ACL tears.
The fact that the q-angle is more pronounced in women than
men leads to more stress on the knee joint and makes it less stable when put
under stress. For this reason, when a woman participates in sports involving
jumping, running or pivoting, she is naturally more likely to suffer an ACL
tear.
What can we do to
prevent ACL tears in women?
Recently, emphasis is being placed on neuromuscular training
programs. Neuromuscular training teaches
the body better biomechanic movements to improve the control of the dynamic
knee stabilizers (the ACL and major ligaments that surround the knee). Exercises that are included in a
neuromuscular training program include stretching, plyometrics and strength
training. The goal of these programs is
to teach athletes how to land, pivot and control the knee without placing as
much force on the ACL. One program was
developed by the Santa Monica Sports Medicine Research Foundation and is known
as the PEP Program: Prevent Injury and
Enhance Performance. To learn more about this program, please visit http://smsmf.org/files/PEP_Program_04122011.pdf.
If you suspect that you have an ACL tear or other orthopedic
injury, it is important to see an Orthopedic Surgeon. Skyview Orthopedic, the office of John
Vitolo, MD is available to treat all your orthopedic injuries and
concerns. Our office is focused on
treating each patient individually and offering the highest quality orthopedic
care. John Vitolo, MD holds dual board
certification in Orthopedic Surgery and Sports Medicine. For more information
call the office, 973-300-1553 or visit us online at www.skyvieworthopedic.com.
