A fixation clamp (10), more particularly for use in an external fixationsystem for holdingbone fragments adjacent to each other with the help of fixation elements,comprising atleast one clamping assembly (20, 30) having at least one reception (71, 72,73) toaccommodate a fixation element along the longitudinal axis of the reception(71, 72, 73)and at least one locking element (40) extending through the clampingassemblies (20, 30)for blocking the position of the clamping assemblies (20, 30) in a definedangular position.Between said locking element (40) and said at least one clamping assembly (20)there isarranged a washer (41). The clamping assembly (20, 30) comprises a firstcontact surface(80) which is spherical and convex and in that said washer (41) comprises asecond contactsurface (81) which is spherical and concave, wherein the first contact surface(80) is incontact with the second contact surface (81).
