As more and more people move into cities and towns, a number of factors cause pollution: 1  the physical disturbance of land due to construction of houses, industries, roads, etc.; 2  chemical pollution from industries, mines, etc.; 3  inadequate sewage collection and treatment; 4  increase in fertilisers to grow more food. 5  litter, which causes disease and ...
In the knee joint, operations to exchange the original implant (prosthesis) with a new one have a good chance of success. The decision to do a revision surgery depends in part on the type of bacteria that has infected the joint. In some uncommon cases, the type of bacteria is so harmful that a revision is not possible.
Introduction. If you tear the anterior cruciate ligament (ACL) in your knee, you may need to have reconstructive surgery. The ACL is a tough band of tissue joining the thigh bone to the shin bone at the knee joint.It runs diagonally through the inside of the knee and gives the knee joint stability.ntroduction. If you tear the anterior cruciate ligament (ACL) in your knee, you may need to have reconstructive surgery. The ACL is a tough band of tissue joining the thigh bone to the shin bone at the knee joint.