It's a well-known fact that women athletes injure the anterior cruciate ligament (ACL) of their knees more often than men. Many explanations have been suggested. Perhaps the training of men and women is different enough to increase risk for ACL injury in women. There are gender differences in hormone levels, knee structure, hip width, and the angles at which muscles attach around the knee. However, no single cause or combination of factors has been proven. One of the functions of the ACL is to keep the larger bone in the lower leg (tibia) from sliding forward of the upper leg bone (femur). This movement of the tibia at the knee is called tibial translation . The ACL keeps forward tibial translation in check. Contracting the muscles around the knee increases the stiffness of the knee. This also reduces forward tibial motion and offers additional protection to the ACL. Since scientists haven't been able to pin gender differences on anything within the joint, they decided to test the muscle...
Female athletes have many more injuries to the anterior cruciate ligament (ACL) of the knee than male athletes. Studies have shown that women college soccer and basketball players have two to four times as many ACL injuries as men. And among professional basketball players, women have 10 times more ACL injuries than men. ACL injuries are especially serious. They often require surgery and intense rehabilitation. And they force many injured athletes to give up their sports. No one is exactly sure why women suffer so many ACL injuries. It is known that the thigh muscles help stabilize the knee joint during start-and-stop sports like basketball and soccer. These researchers tested the muscle activity of male and female college athletes during exercise. They wanted to see if the thigh muscles worked differently when doing intense extension and flexion exercises. The results showed that the men's quadriceps muscles (in the front of the thigh) produced much more force than the women's. But t...
Walking abnormalities are unusual and uncontrollable walking patterns that are usually due to diseases or injuries to the legs, feet, brain, spinal cord, or inner ear.
The pattern of how a person walks is called the gait. Many different types of walking problems occur without a person's control. Most, but not all, are due to some physical condition.
Some walking abnormalities have been given names:
Propulsive gait -- a stooped, stiff posture with the head and neck bent forward
Scissors gait -- legs flexed slightly at the hips and knees like crouching, with the knees and thighs hitting or crossing in a scissors-like movement
Spastic gait -- a stiff, foot-dragging walk caused by a long muscle contraction on one side
Steppage gait -- foot drop where the foot hangs with the toes pointing down, causing the toes to scrape the ground while walking, requiring someone to lift...
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