By January, Jane Schaeffer could barely manage a walk around the block, which was no surprise: She needed a new hip. Schaeffer, who is 64 and a yoga teacher in Bennington, didn’t like that prognosis. So, she consulted the oracle of Hippocrates — the Internet — and concluded that what she wanted was a Birmingham Hip-Resurfacing, or BHR, a less-invasive procedure developed in England and …
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