Abstract: An external fixation device for orthopedic use adapted to be used with the so-called ILIZAROV method including at least two hoops for a substantially cross-shaped attachment of pins, cross-pieces connecting the hoops in spaced relation, each cross-piece including a first end connected to one hoop and a second end connected to another hoop, a device for adjusting the length of the cross-pieces for putting under traction or compression, at least a bone fragment to which the cross-pieces connect respectively through the hoops and the pins, a first clamp device for clamping a first end of each pin, a second clamp device for clamping a second opposite end of each pin, the first clamp device and second clamp device are connected to the hoops diametrically, and a device for moving the first clamp device away from the second clamp device to tension the respective pins.

Abstract: Device for immobilizing a bone element, especially for orthopedic use, comprising pins or needles, passing through the element, mounted in supports themselves borne by two metallic rigid hoops surrounding the bone element and separated from one another by spacing braces having an adjustable length, each hoop having in straight cross-section an external outline presenting two flattened parallel portions 14, 15 respectively connected by two convex portions 16, 17 the supports of the pins or needles 3 borne by the hoop being constituted by laterally open parts having two wings comprising plane surfaces adapted to cooperate through plane sliding with the flattened portions of the hoop, these wings being joined by a concave portion matching the outline of one of the convex portions of the external outline of the hoop.