When ligaments are damaged, the knee joint may become unstable. Ligament damage often occurs from a sports injury. A torn ligament severely limits knee movement, resulting in the inability to pivot, turn, or twist the leg. Surgery is an option to repair a torn ligament if other medical treatment is not effective. There are 4 major ligaments in the knee. The ligaments in the knee connect the femur (thighbone) to the tibia (shin bone), and include the following: Anterior cruciate ligament (ACL).
Cataracts often form slowly and cause few symptoms. When symptoms are present, they can include: 1  Vision that is cloudy, blurry, foggy or filmy. 2  Sudden short sightedness. 3  Changes in the way you see colour, especially yellow. 4  Problems driving at night because oncoming headlights are distracting. 5  Problems with glare. 6  Double vision.
The complications from cataracts themselves are fairly basic. The most common effects are vision loss, which can sometimes be so severe as to result in total blindness. Dogs with vision loss are more susceptible to a variety of accidental injury as a result of not being able to see properly.