Normal anatomic variants of the acetabular labrum are observed on MR images and include labral variants, several sublabral sulci, and perilabral sulcus. Because variants can be misidentified as labral abnormalities such as labral tears, the radiologist needs to avoid the pitfall of mistaking variants as abnormalities. CONCLUSION. The hip has multiple anatomic variants that can mimic abnormalities at hip MRI.
Definition - What does Grinding mean? Grinding is an abrasive machining process that uses a grinding wheel or grinder as the cutting tool. Grinding is a subset of cutting, as grinding is a true metal-cutting process. Grinding is very common in mineral processing plants and the cement industry.
Depending on wind & circumstances and size of the vessel there can be hundreds even thousands of pounds of pressure on the sail and the line, so winches are an important tool for the sailor. Grinding (and tailing) is the act of rotating the winch handle to pull on the line inorder to tighten a sail. On larger sailing vessels, the crew operating the winch is often referred to as the Grinder. Because the winch wonât pull a line tight unless the line is tight on the winch, both grinding and tailing actions need to occur simultaneously. On the American Cup vessels (for example) while one person can do both actions, It takes two - or one person for each action when speed and every second counts.