Trauma surgery covers the treatment of fractures, dislocations and tendon ruptures. The core principle is to restore the joint surface and bone alignment anatomically and to fix them firmly enough to allow early movement. Not every fracture needs an operation; many undisplaced, stable fractures are treated in a cast or splint. In tendon ruptures, timing is decisive: repairs of distal biceps and Achilles ruptures performed in the first weeks give the best results.