A 69-year-old man with a history of chronic pain and opioid use presented for total hip arthroplasty. In the interests of ensuring early mobilization and pain control, we chose a continuous quadratus lumborum block technique, a novel ultrasound-guided block that has not yet been described for total hip arthroplasty, hypothesizing that it would be motor-sparing. While the perineural catheter was infused, the patient required no IV opioids. He was able to ambulate on the first postoperative day, reporting pain scores between 0 and 3/10. The quadratus lumborum block is a promising technique that, in our patient, was motor-sparing and provided excellent pain control.