A cervical laminectomy (may be combined with an anterior approach) is sometimes performed when acute cervical disc herniation causes central cord syndrome or in cervical disc herniations refractory to conservative measures. Studies have shown that an anterior discectomy with fusion is the recommended procedure for central or anterolateral soft disc herniation, while a posterior laminotomy-foraminotomy may be considered when technical limitations for anterior access exist (., short thick neck) or when the individual has had prior surgery at the same level (Windsor, 2006).
For the detailing of precast concrete panel design and shop drawings. This suite of tools will automatically calculate the panel centre of gravity, lifting requirements, weight, area and concrete volume. A cad accurate model is created of all elevations including all panels and their fitments. Once complete the drafter can then use the Shop Detail function to automatically place the desired panel onto a drawing sheet. All dimensions and panel quantities are placed around the panel in a matter of seconds with only a few moments of clean up work required.