The value of sonication in the differential diagnosis of septic and aseptic femoral and tibial shaft nonunion in comparison to conventional tissue culture and histopathology: a pro... od Katharina Trenkwalder, Sandra Erichsen, Ferdinand Weisemann, Peter Augat, Matthias Militz, Christian von Rüden, Tobias Hentschel, SAND Research Group, Simon Hackl