An augmented reality surgical guidance system includes an augmented reality device (40) and a plurality of mobile surgical tracking devices (1, 10), including at least a first mobile surgical tracking device (1) and a second mobile surgical tracking device (10), wherein at least one of the first or second mobile surgical tracking devices (1, 10) is connected to an object (7, 17). The first mobile surgical tracking device (1) includes a marker (4), a sensor (3) and a control unit (2). The sensor (3) of the first mobile surgical tracking device (1) is configured to track the position of the second mobile surgical tracking device (10) or the augmented reality device (40). The sensor (3) is connected to the control unit (2) to provide positional information data of the second mobile surgical tracking device (10) to the control unit (2). The control unit (2) includes a transmission unit (9) configured to transmit the positional information data to the augmented reality device (40) and the augmented reality device (40) includes an imaging device (41) and a display (45). The imaging device (41) is configured to process an image of the object (7, 17). The display (45) is configured to overlay the image of the object (7, 17) with output information of at least one of the mobile 20 surgical tracking devices (1, 10) based on the positional information data in the image of the object (7, 17).L'invention concerne un système de guidage chirurgical à réalité augmentée, comprenant un dispositif de réalité augmentée (40) et une pluralité de dispositifs de suivi chirurgical mobiles (1, 10), comprenant au moins un premier dispositif de suivi chirurgical mobile (1) et un second dispositif de suivi chirurgical mobile (10), au moins l'un des premier ou second dispositifs de suivi chirurgical mobile (1, 10) étant connecté à un objet (7, 17). Le premier dispositif de suivi chirurgical mobile (1) comprend un marqueur (4), un capteur (3) et une unité de commande (2). Le capteur (3) du premie
