Fig. 1
From: Knee OA cost comparison for hyaluronic acid and knee arthroplasty
Contributions of various therapies to the overall cost of treating 1,567,024 knee OA patients. As calculated by the authors, the top five largest contributors to the non-specific “other” category included other/unspecified operations on skin/subcutaneous tissue (US$ 43.8 million), subsequent total hip arthroplasties (US$ 39.6 million), subsequent lumbar spine fusions (US$ 10.5 million), continuous passive motion devices (US$ 9.0 million), and unclassified drugs (US$ 4.7M)