Abstract: A surgical device for treating the pathology of flat feet, the device comprising an outer casing; and an expansion member suitable for moving inside said outer casing in a compression direction, for causing said outer casing to expand radially; the surgical device being provided with non-return check means shaped to allow the expansion member to move in the compression direction towards an operating position inside the outer casing and to oppose movement of the expansion member in the reverse direction once said operating position is reached, so as to prevent the expansion member from being expelled.

Abstract: The invention provides an osteosynthesis and compression screw that is self-boring and self-tapping for the purpose of coaptation of small bone fragments. The screw comprises: a proximal portion formed by a screw head provided with an outside thread; an intermediate portion having no thread; and a distal portion provided with an outside thread. Wherein: each of the screw head and the distal portion includes at least one groove, firstly extending over the entire axial length of its thread, and secondly being formed through each thread in such a manner to form tapping means; and the terminal zone of the distal portion is provided with preparation means for preparing a housing in the bone fragments for receiving the intermediate and distal portions of the screw.

Abstract: The invention provides an osteosynthesis and compression screw that is self-boring and self-tapping for the purpose of coaptation of small bone fragments. The screw comprises: a proximal portion formed by a screw head provided with an outside thread; an intermediate portion having no thread; and a distal portion provided with an outside thread. Wherein: each of the screw head and the distal portion includes at least one groove, firstly extending over the entire axial length of its thread, and secondly being formed through each thread in such a manner to form tapping means; and the terminal zone of the distal portion is provided with preparation means for preparing a housing in the bone fragments for receiving the intermediate and distal portions of the screw.

Abstract: The invention relates to a plate for fixing the bones of a joint, in particular of a metatarso-phalanageal joint, for the purpose of performing arthrodesis, wherein: the plate comprises two sections, respectively a proximal section and a distal section, each section having a respective longitudinal axis of symmetry S1, S2 such that the projection onto a horizontal plane of tie axis of symmetry S2 of the distal section presents an angle of inclination relative to the projection of the axis of symmetry S1 of the proximal portion, the projections intersecting at a point A; and the projection onto a vertical plane of the axis of symmetry S2 presents an angle of inclination relative to the projection of the axis of symmetry S1, their intersection taking place at a point A2 which is distinct from the point A1.

Abstract: A plate for fixing the bones of a joint, in particular of a metatarso-phalangeal joint, for the purpose of performing arthodesis. The plate comprises two sections, respectively a proximal section and a distal section, each section having a respective longitudinal axis of symmetry S1, S2 such that the projection onto a horizontal plane of the axis of symmetry S2 of the distal section presents an angle of inclination relative to the projection of the axis of symmetry S1 of the proximal portion, the projections inserting at a point A. The projection onto a vertical plane of the axis of symmetry S2 presents an angle of inclination relative to the projection of the axis of symmetry S1, their intersection taking place at a point A2 which is distinct from the point A1.

Abstract: The invention provides a guide for angularly positioning bones in a joint in order to perform arthrodesis, the guide comprising: a base for positioning on the joint, and having an adjustment shaft whose position is designed to be adjusted so as to be substantially vertically above a fixed first geometrical reference point R of the joint; and an adjustment assembly mounted to slide axially and in rotation on the adjustment shaft to adjust respectively a height for the assembly relative to the first geometrical reference point R and a first angle &agr; for the assembly about said axis, said adjustment assembly being formed by an angular adjustable member which can be positioned on a graduated piece to adjust a second angle &bgr; centered on the first geometrical reference point R, but situated in a plane different from the first angle &agr;. The guide is suitable for metatarso-phalangeal positioning.

Abstract: A surgical device for holding together and aligning at least two pieces of bone, the device comprising: a surgical pin suitable for being implanted axially in the pieces of bone to be held together; and a protective plug provided with a through channel for enabling it to be engaged on the pin, said plug including a locking orifice in which locking element can be inserted; wherein: the locking orifice is made in such a manner as to open out into the through channel so as to form a surface S; and the locking element presents a matching cross-section such that on being inserted into the locking orifice it can lock the plug relative to the pin.

Abstract: The invention provides a guide for angularly positioning bones in a joint in order to perform arthrodesis, the guide comprising:

Abstract: A surgical device for holding together and aligning at least two pieces of bone, the device comprising: