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    Knee - Wikipedia, the free encyclopedia
  • The knee (also known as gyena)is a complex, compound, condyloid variety of a synovial joint. ... Main article: Articular capsule of the knee joint ...
  • http://en.wikipedia.org/wiki/Knee
Questions/Answers
knee joint?
knee joint is a synovial joint..what is the subtype of synovial joint it is? eg of synovial subtype : ellipsoid, plane, saddle and etc
All joints in the body are either movable or immovable. Movable joints are nearly all synovial, and are classified as ball-and-socket, hinge, gliding and pivot joints. The knee and the elbow are movable joints best classified as hinge joints. The shoulder and hip are best classified as ball-and-socket joints. The best example of a pivot joint is that between the odontoid process of the first cervical vertebra and the base of the skull, and I believe this is not a synovial joint. Gliding joints, in which one bone slides against another, are found in the wrist and ankle. Non-synovial joints are immovable or only slightly movable, and are exemplified best by the joints between the bones of the pelvis, which allow almost no movement, and the suture joints between the bones of the skull, which allow no movement. I hope this answers your question, plus providing some information for readers who may not be familiar with or studying anatomy.
How is the knee joint poorlyprotected and thus especiallyvulnerable to injuries?
the full question is:Compared to the shoulder and hip joints, in what way is the knee joint poorly protected and thus especially vulnerable to injuries?
The knee is particularly unstable because it bears so much weight with relatively little support. Think about the structure of the joint. The very large femur sits precariously atop the significantly smaller tibia. The two bones slide back and forth on each other, even in non-stressful conditions. A hard knock to the knee can easily take advantage of this weakness and cause injury, whereas a similar blow to the shoulder or hip will cause little, if any damage. Fortunately the instability of the knee's bony structure is partially compensated for by strong ligaments and muscles. However, these ligaments are very prone to injury themselves when they are pushed beyond their limits.
What are the strengths andweaknesses of the knee joint?
What are the strengths and weaknesses of the knee joint? Example- Strength: Enables the body to move, is strong, is supportive Weakness: Is easily injured Any other suggestions?
M S, the knee joint is a very simple and complex one all at the same time. The strengths of the joint are in the redundancies it has. For example the ACL is not the first line of stability in the knee but the hamstrings and the gastrocs are. When they fail or the stress is too much for them the ligament goes. This system of redundancy is found on all sides of the knee. The joint becomes more stable the stronger the muscles are. The weakness of the joint come from the fact that is is essentally a stick with rubberbands stabilizing it. There is a law in physics that states where there is strength or stability there is no flexibility and where there is flexibility there is no strength. The knee is that in essence. The joint itself is built around two ball bearings that are not of equal size and they are supported in two cups of shallow depth and also of unequal size and stabilization. There is a hinge joint at the knee but it is not that simple for at the same time there is a rotational movement that locks the knee when it is in full extension. The joint is most stable when it is in full extension and most unstable with flexion. The knee is most vulnerable to injury when it is in full or almost full extension for there is no give and the muscles cannot really stabilize it therefore exposing the ligaments to excessive force.
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