Hinge Health, the San Francisco-based company that offers a digital solution to treat chronic musculoskeletal (MSK) conditions — such as back and joint pain — has closed a $300 million in Series D funding, according to sources. The round is led by Coatue and Tiger Global, and values 2015-founded Hinge at $3 billion post-money, people familiar with the investment tell me. Hinge's existing investors include Bessemer Venture Partners, which backed the company's $90 million Series C round in February, along with Lead Edge Capital, Insight Partners (which led the Series B), Atomico (which led the Series A), 11.2 Capital, Quadrille Capital and Heuristic Capital.