And they said the only good crack in the 'Loin came from the corner hustler. The expert hands of the professional back crackers at Latch, So & Hwang will give your spine a much-needed shift to ease everything from sharp shooting pain to chronic headaches, tiredness, and achy tension. The Latches are a San Francisco pain-relief dynasty: Lloyd Latch started practicing in 1959, and two of his sons now work alongside the office's 30-year-veteran, Kenneth So (who was described by one ecstatic patient on Yelp as "Jesus for the spine"). The multicultural crew of doctors speaks Cantonese, Mandarin, Korean, Japanese, and Spanish. The office accepts Medi-Cal, and offers all patients a free class on making ergonomic changes to your daily routine.