what is knee effusion?
90395
abnormal fluid collection in the knee joint.  Usually from some sort of problem such as: arthritis, infection, torn cartilage, brusies, injuries, too thin blood causing bleeding into the joint, and extremely rarely tumors.  You should make sure you see a doctor.
465914
mine too! from sports. nothing you can do, you can get knee surgery though.
222714
It's the blood circulating through your legs from gravity pushing the blood down. It'll go away.
882481
Mensicus.  Yes, there are different types of this particular cartilge.  It is very thick, the goes to very thin.  Crucial for the largest joint in the body, stabilizing and much more.  Get it checked out by a orthopedst who specializes in knee injuries.  Get a second opinion as well... one wrong move can cause you potential problems for life.  See someone reputable, or just out of school--then rest assured you know they are going to care about their patients and be very cautious.
661122
Sounds to me like you jarred the knee.\nIt can happen from an impact like jumping in BB. If you are lucky its only a jarred knee which will take a few days to sort itself out. It could be ligament damage but thats unlikely as you would be in severe pain constantly and would know straight away. Try getting a crep (sorry i dont know the spelling, but basically its a tight elastic material) bandage and leave it on it for support when your are moving around.\nOther then that, ice it for a while to make sre there is no internal bleeding, then apply a heat pack to it every half an hour for 10 mins and see if that sorts it out.\nYou should go to see a sports doctor or a physio either way, an ordinary GP will just refer you to a specialist if he does not solve it.
13517
Inflammation of a joint. An increase in the amount of synovial fluid in the joint is a result of this inflammation. Accumulation of synovial fluid in the fetlock joint is called a "wind puff" or "wind gall." In young horses, a swelling in the fetlock joint, particularly on the front of the joint where the cannon and long pastern bones meet, is called a "green osselet." This swelling is a result of inflammation and reactive changes of the front edges of these two bones and adjacent cartilage.
585837
A partial meniscectomy is a surgical procedure that is performed to remove a piece of torn cartilage in the knee joint. Arthroscopic surgery is often recommended if the torn meniscus is becoming bothersome to the patient.
1005063
Something lower impact. Knees are once in a lifetime.
81987
A pulmonary embolism is a blood clot that has traveled into the pulmonary (lung) circulation and lodged there, blocking blood flow.  This prevents blood from picking up oxygen at the lungs, so the body tissues can starve from hypoxia.  A saddle pulmonary embolus is probably the worst case scenario.  Whereas most pulmonary emboli are very small (and probably not even clinically significant), saddle emboli lodge where the pulmonary artery divides to the left and right lung.  Blood flow is blocked to both lungs, and death is imminent.\n\nBig emboli like that often form in the large leg veins, especially if someone has been very inactive for an extended period (e.g. a long hospital stay).  Clotted blood isn't the only material that can cause an embolus.  Anything that gets in the bloodstream can cause a blockage -- air, fat, amniotic fluid, bacterial vegetations, and on and on.
937402
Popping\n\nPopping and snapping within the knee is quite common, and often not a symptom of any particular problem. When the pops or snaps are painless, there is usually no problem--the bigger concern is when these sounds are associated with pain. A pop is often heard or felt when a ligament, such as the ACL, is torn. \n\nCrunching/Grinding\nA sense of grinding or crunching is most often associated with bone grinding against bone once the cartilage is worn away. This is commonly found in arthritis. Patients who are young (under 50 years old) seldom have arthritis that will cause these severe symptoms, unless there has been a severe injury to the knee in the past.\n \nLocking\nLocking is a symptom that occurs when a patient cannot bend or straighten their knee. The locking can either be due to something actually blocking motion of the knee (this can occur when a piece of cartilage wedges within the joint) or when pain prevents the patient from moving the knee. These two causes must be differentiated, as something physically caught in the joint should be evaluated in a timely manner. Often injecting the knee with numbing medication can help determine the cause of locking. \n\nGiving-Way/Instability\nThe stability of the knee is provided by the ligaments that connect the shin bone (tibia) to the thigh bone (femur). When the ligaments are stretched or torn, the knee may feel as though it is giving way beneath the patient. A sensation that the knee may give out from beneath you is a common symptom of ligament injury.
409167
I injured my knee in a White Zombie concert years ago when the crowd rushed the stage and it took 3 security guys to get me out.As they were lifting me over the barricade, the crowd rushed the stage again and 1 of them slipped and dropped me, and all my weight came down on my knee that hit the metal barricade.Yeah, it hurt like hell, and I was on crutches for a bit.But ever since, my knee starts bothering me when it gets rainy.I asked my doc about it and he said it's because the calcification of healed fracture expands during humidity.Or something along the lines of that like that.
585616
First, if you are having pain then there is something wrong and you should not just "suck it up".  You need to specify what activities are causing pain and when.  \n\nAsk yourself these special questions:\nIs it sharp pain or dull pain? (chemical vs. mechanical pain)\nIs it intermittent or constant? (activity driven or constant)\nDoes the knee "give way" (esp. with descending stairs)? (possible ligaments instability)\nDoes the knee lock (won't straighten all the way)? (possible loose body in joint or meniscus tear)\nDo you get popping/grinding/"rice crispies" feeling with moving the knee? (possible chondromalacia, osteoarthritis)\n\nThe treatment depends on the problem.
167205
I think probably when you hit the knee it caused a blood clot to form under the skin which is common in bruising,and that swelled into 2 pea size lumps.Try taking some extra vitamin C,and if the swelling doesnt go down within a few days you can have it evaluated by a physcician.
234275
The knee is a complex, compound, condyloid variety of a synovial joint. It actually comprises two separate joints. The femoro-patellar joint consists of the patella, or "kneecap", a so-called "sesamoid bone" which sits within the tendon of the anterior thigh muscles, and the patellar groove on the front of the femur through which it slides. The femoro-tibial joint links the femur, or thigh bone, with the tibia, the main bone of the (lower) leg. The joint is bathed in a viscous fluid which is contained inside the "synovial" membrane, or "joint capsule". The recess behind the knee is called the "popliteal fossa".
673235
Anatomically, the leg (from knee to ankle) has 3 compartments: anterior, lateral and posterior. The disorders depend on the area and the tissue, but I can't find specific ones. \n\nI do know that swelling of a muscle or a bleeding artery could cause a rise in the pressure inside the compartment which would compress some of the muscles, which can cause ischemia and permanent damage.\n\nI guess you are studying anatomy cause no one else knows about "leg compartments" so you should check "Clinically oriented anatomy" by Keith L. Moore. It a good anatomy book and mentions several disorders depending on the muscle, nerve, etc.\n\nHope this helps!
110924
It is the wearing away and/or softening of the articular cartilage. \n\nThe articular cartilage is a connective tissue that covers and protects the underside of the patella, the bottom end of the femur, and top end of the tibia. It absorbs stress to the knee joint and allows the patella to track smoothly in its femoral groove.\n\nCauses typically include excessive running or similar activity can wear down the articular cartilage over time. This can occur due to the patella not tracking smoothly in its femoral groove.\n\nThe symptoms include pain around the patella (kneecap), usually occurring on the medial (inner) side and below (inferior aspect of the patella).\n\nRecommended Treatment would be R.I.C.E. - Rest, Ice, Compression, Elevation. Reduce activity to promote healing. Avoid downhill runs especially. Strengthen surrounding muscles with a professionally recommended program. Apply Ice for 10-15 minutes after each workout to reduce inflammation and pain. (If any skin irritation or adverse reaction occurs due to icing, see your medical doctor). A proper stretching (Quadriceps, Iliotibial Band) routine is highly recommended pre and post workouts. As with any orthopedic injury, a consultation with a sports medicine professional is recommended.
670080
medical term for the cartilage fluid is SYNOVIAL FLUID which helps in lubrication of the joint while movement of that joint....