The rehabilitative care within the framework of orthognathic surgery has a dual objective: optimizing patient comfort on the one hand, and sustaining the stability of the ortho dontico-surgical result on the other hand. Ideally, the physiotherapist should intervene in all stages of the treatment. Preoperatively, he performs a work-up to identify oromyofacial dyspraxias and begins preparatory work for rehabilitation. Immediately postoperatively, it improves patient comfort and function. It then allows recovery of joint amplitudes and helps stabilize the result by avoiding muscle spasms and correcting dyspraxias.