When the painkillers stop working, arthritic joint damage in the big toe can make even the weight of a bedsheet agonizing. Standard surgery eliminates that pain by removing the cartilage and fusing the bones, but at the expense of mobility. Cartiva Inc’s implant — made of the same substance used in contact lenses, called hydrogel — was approved for big-toe surgeries by the U.S.
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Water-based implant new option for Americans with big toe damage