Hinge system configured to move a door, shutter or similar element from a closed configuration to an open configuration, and vice versa, comprising: a plurality of coupling elements comprising at least - a first coupling element operatively attachable to a fixed frame of said door; - and at least one second coupling element operatively attachable to a portion of said door; a connecting body placed side by side to and operatively connected to both said first coupling element and said second coupling element, wherein said hinge system comprises at least a first pin extending along a first axis of said connecting body and configured to provide a pivotal connection about said first axis between said first coupling element and said connecting body and a second pin extending along a second axis configured to provide a pivotal connection about said second axis between said second coupling element and said connecting body, said first axis and said second axis being staggered so as to be arranged at respective different distances (D1, D2) from a closing plane defined by said door and said fixed frame in a closed configuration of said door, wherein said closed configuration of the door is a flush configuration with the closing plane of the door aligned with the fixed frame, said hinge system being characterized in that it comprises a protrusion positioned on said at least first coupling element proximal to said first pin and next to an area facing the outside and/or facing and in line with said closing plane, and configured to cover at least partially a passage opening between said door and said fixed frame in a closed configuration of said door. a plurality of coupling elements comprising at least - a first coupling element operatively attachable to a fixed frame of said door; - and at least one second coupling element operatively attachable to a portion of said door; - a first coupling element operatively attachable to a fixed frame of said door; - and at least one second coupling element operatively attachable to a portion of said door; a connecting body placed side by side to and operatively connected to both said first coupling element and said second coupling element, wherein said hinge system comprises at least a first pin extending along a first axis of said connecting body and configured to provide a pivotal connection about said first axis between said first coupling element and said connecting body and a second pin extending along a second axis configured to provide a pivotal connection about said second axis between said second coupling element and said connecting body, said first axis and said second axis being staggered so as to be arranged at respective different distances (D1, D2) from a closing plane defined by said door and said fixed frame in a closed configuration of said door, wherein said closed configuration of the door is a flush configuration with the closing plane of the door aligned with the fixed frame, said hinge system being characterized in that it comprises a protrusion positioned on said at least first coupling element proximal to said first pin and next to an area facing the outside and/or facing and in line with said closing plane, and configured to cover at least partially a passage opening between said door and said fixed frame in a closed configuration of said door.