bonesetter
... that "Crazy Sally", an 18th-century bonesetter, successfully treated dislocated shoulders and knees in a London coffee house despite having no medical training?
... that "<a href="./Sally_Mapp" id="mwA6Q" rel="mw:WikiLink" title="Sally Mapp">Crazy Sally</a>", an 18th-century <b id="mwA6U"><a class="mw-redirect" href="./Bonesetter" id="mwA6Y" rel="mw:WikiLink" title="Bonesetter">bonesetter</a></b>, successfully treated dislocated shoulders and knees in a London coffee house despite having no medical training?