Cam Impingement. The basic hypothesis is that cam impingement arises when the radius of curvature of the femoral head or neck profile exceeds the radius of curvature of the acetabulum, and can arise from a number of basic abnormalities.
1 Singapore Daisy is highly invasive and is rapidly spread both by seed dissemination and by means of its spreading aboveground stems that form roots at every node. good local alternative. A popular native creeping vine of the tropics that is one of the most common and most widely distributed of all salt tolerant plants. Its sprawling runners spread out from a woody rootstock and have sparse, heart-shaped to rounded leaves. Flowers are purple, 2â5 cm long and freely produced.
By Bonnie L. Grant. Tansy is an herbaceous perennial plant, often deemed as a weed. Tansy plants are common in the United States, particularly temperate regions. The scientific name for common tansy, Tanacetum vulgare, may be an assertion to its toxic properties and invasive nature.ow to Keep Tansy from Taking Over. Tansy is a Class C noxious weed in parts of the western states. The plants were originally introduced as decorative flowers and then became ânaturalizedâ in the U.S. The plant was once an important part of herb gardens and used to treat colds and fevers.