Around 500,000 vasectomies are done each year in the US, with 5-6% of patients later wanting a reversal. The article discusses the male reproductive system, the history of vasectomy and reversal procedures, and options for restoring fertility after a vasectomy. These include sperm retrieval for "test tube babies" or a vasectomy reversal. Factors like pre-op conditions and surgical techniques affect the success of vasectomy reversals.