Classification. Other classification systems exist however. Cowardin (1979) recognizes the following five major wetland classifications: marine, estuarine, lacustrine, riverine, and palustrine. Marine and estuarine wetlands are associated with the ocean and include coastal wetlands, such as tidal marshes. Lacustrine wetlands are associated with lakes, while riverine wetlands are found along rivers and streams. Palustrine wetlands may be isolated or connected wet areas and include marshes, swamps, and bogs.
Top 10 Doctor insights on: Spinal Stenosis Knee Pain. 1 Pain in front top portion of legs from knees up after walking relieved when sitting. Had surgery for spinal stenosis 15 months ago with relief. Muscle strain: Male just over one year post-surgery for spinal stenosis has bilateral pain in quads w. walking.
Spinal stenosis is the narrowing of spaces in the spine (backbone) which causes pressure on the spinal cord and nerves. About 75% of cases of spinal stenosis occur in the low back (lumbar spine). In most cases, the narrowing of the spine associated with stenosis compresses the nerve root, which can cause pain along the back of the leg. Learn The Truth About Back Pain Causes and Treatments.