original: In March 2005, Pavarotti underwent neck surgery to repair two vertebrae.
simplifications: Pavarotti had neck surgery to fix two vertebrae in March 2005. In March of the year 2005, Pavarotti had surgery on his neck to fix two of the bones in his spine. In 2005, Pavarotti had neck surgery on two vertebrae. Pavarotti had neck surgery in March 2005. Pavarotti had neck surgery to repair two vertebrae in 2005. In March 2005, Pavarotti had neck surgery to fix two vertebrae. Pavarotti had neck surgery to repair two vertebrae in March 2005. In March 2005, Pavarotti had neck surgery to fix two bones. Pavarotti had neck surgery on two vertebrae in March 2005. In March 2005, Pavarotti experienced a neck surgery to repair two vertebrae.