Alternative techniques include Laser Resurfacing and certain Ultrasound alternatives. Hip resurfacing is an alternative to hip replacement surgery. Dermabrasion has fallen out of favor with the introduction of laser resurfacing. The airport is undergoing resurfacing of its runway. Prostheses come in many varieties, such as spacers or resurfacing prostheses. For example, the Birmingham hip resurfacing and the Thompson Hemiarthroplasty. This is potentially due to large resurfacing process in the northern lowland. In 2012 the road had to be closed several times for resurfacing and strengthening. Resurfacing works were undertaken in 1994. It was opened in 2005 and underwent resurfacing in 2010. Various solutions were suggested for this discrepancy, including resurfacing by impacts or outgassing. It encompassed new certification, recertification in the field, and recertification after resurfacing. Instead, Venus may lose its internal heat in periodic major resurfacing events. Frank Joseph Zamboni Jr. is the inventor of the ice resurfacing machine. The 2007 Leuchars Airshow was cancelled due to resurfacing of the runway.