Die interfragmentäre Kompression des ZESPOL-Osteosynthese-Systems

Abstract

Apart from the advantages of plate osteosynthesis, like primary bone healing and immediate post-operative mobilisation treatment, the disadvantages of this method must be mentioned. First of all these are the high pressure on the surface of the bone by the plate and the high tension stress on the bone by the thread of the screws, which can lead to bone atrophy. Besides the splinting by the plate is accompanied by a functional lack of the bone. The bone reacts on this "stress protection" by reduction of material, especially under the plate. These disadvantages shall be avoided by a new osteosynthesis system, called ZESPOL, which has been developed in Poland. Here the plate does not contact directly the bone, but is fixed above the periost by special screw bolts. Although this method is used in Poland clinically with success, until now no experimental examinations concerning the stability of this osteosynthesis have been published. In the following biomechanical tests we examined, whether the new method achieves a comparable interfragmental compression like common selfcompressing plate systems. We measured the maximal interfragmental compression with an interposed piezo-electric element on human cadaver tibiae. Because the original ZESPOL plates have greater dimensions than common plates, we did not use these original plates. In order to get a comparability between the two systems, we modified small Autocompression plates (ACP) by milling a slot in the underside, so that they could be used with the original ZESPOL screw bolts. These modified ZESPOL plates we compared with common 6-hole Autocompression plates and cortical screws.(ABSTRACT TRUNCATED AT 250 WORDS)

Externalised locking compression plate as an alternative to the unilateral external fixator: a biomechanical comparative study of axial and torsional stiffness

“…26-28 There have been several case series reporting the use of the externalised LCP as an external fixator in various regions of the body. 7,29,30 However, the most common region is the tibia.…”

Supracutaneous plate: A comparable alternative to external fixator in the treatment of open fracture

“…In the early years, the aim of plate fixation outside the skin was to reduce the stress on bone and periosteum. In 1987, there was one biomechanical study regarding external plate fixation using Zesopl osteosynthesis system [4][5] . This initial study was not to use alternative to the traditional external fixator in the management of open fracture but to replace the compression plate in the treatment of closed fractures.…”