Abstract: The invention relates to a device for externally immobilizing broken bones, particularly bones of the extremities. According to the invention, the device has a multi-articulartion rod that can be place don the outside of the body while extending along a broken bone. This rod comprises elements (1), which can move in relation to one another and can be fixed in appointed directions. One of the elements (1) has a bone pin (7), which can be held therein in a manner that permits it to turn and which is provided for being anchored inside the bone. In addition, the tip of at least one of the bone pins (7) is provided in the form of a screw having a self-tapping thread (8).

Abstract: The invention relates to a device for externally immobilizing broken bones, particularly bones of the extremities. According to the invention, interspaced bone pins (9), which are provided for insertion into the bone while passing through the skin and soft-tissue mantle are arranged on a multi-articulation rod. This multi-articulation rod can be placed on the outside of the body while extending along a broken bone and comprises elements (1), which are interconnected in a ball-and-socket type manner and which can be fixed in selected relative positions. The elements (1) have a ball (2) on one end and a ball socket (3) on the other end, and the ball (2) of one element is located inside the ball socket (3) of an adjacent element. The ball and ball socket each geometrically extend over more than one hemisphere, and the surfaces of the ball (2) and ball socket (3) are roughened.

Abstract: A nail for fixing the position and shape of broken long bones is provided. The nail has a longitudinal shank defining a central main body and longitudinal extending, radially directed, ribs, preferably one or more. The nail and ribs are collapsed in diameter when inserted into the broken bone and then, by introducing a fluid into the hollow nail, the diameter of the nail increases such that the rib(s) contact the interior of the broken bone.

Abstract: A nail for fixing the position and shape of broken long bones is provided. The nail has a shank having a central main body and longitudinal chamber-like expansion elements attached to the central main body which are expandable while in situ. The expansion elements run substantially the length of the shank and are preferably arranged substantially equiangularly around the central main body. When the expansion elements are expanded, a cross-section of the central main body is expanded. The central main body may be provided with channels into which the expansion elements may be disposed.