Search PubMed⌕ Search

PubMed · 8701693

[External fixators combined with other methods].

Abstract

Problems in the treatment of injured persons, especially if lesions of larger organs or organ systems exist, are great. Each method of treatment has some deficiency respectively dark side. In such cases a combination of methods of treatment is a necessity and a rule. In combining various methods, special care must be taken to cover these deficiencies up resp. to improve the methods. Regarding the fact that the method of external fixation has in its indications for treatment numerous combinations, it is also more easily combined with other surgical methods. It proved successful in combinations such as: minimal osteosyntheses acc. to the AO method, additional immobilization in unstable osteosyntheses, in covering of extensive skin defects and soft parts with cross-leg and free grafts, in temporary osteosynthesis in extensive bone defects, in large diastases of public bones and lesion of the posterior urethra, in polytrauma for temporary bone immobilisation, in bone fractures and "compartment syndrome". The analysis of 38 cases shows that our decision was correct, since no unfavourable results were obtained.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

A Kruscić, B Zgajnar. 1991. [External fixators combined with other methods].. https://pubmed.ncbi.nlm.nih.gov/8701693/

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related citations

Safety evaluation of large external fixation clamps and frames in a magnetic resonance environment.

Large orthopedic external fixation clamps and related components were evaluated for force, torque, and heating response when subjected to the strong electromagnetic fields of magnetic-resonance (MR) imaging devices. Forces induced by a 3-Tesla (T) MR scanner were compiled for newly designed nonmagnetic clamps and older clamps that contained ferromagnetic components. Heating trials were performed in a 1.5 and in a 3 T MR scanner with two assembled external fixation frames. Forces of the newly designed clamps were more than a factor 2 lower as the gravitational force on the device whereas, magnetic forces on the older devices showed over 10 times the force induced by earth acceleration of gravity. No torque effects could be found for the newly designed clamps. Temperature measurements at the tips of Schanz screws in the 1.5 T MR scanner showed a rise of 0.7 degrees C for a pelvic frame and of 2.1 degrees C for a diamond knee bridge frame when normalized to a specific absorption rate (SAR) of 2 W/kg. The normalized temperature increases in the 3 T MR scanner were 0.9 degrees C for the pelvic frame and 1.1 degrees C for the knee bridge frame. Large external fixation frames assembled with the newly designed clamps (390 Series Clamps), carbon fiber reinforced rods, and implant quality 316L stainless steel Schanz screws met prevailing force and torque limits when tested in a 3-T field, and demonstrated temperature increase that met IEC-60601 guidelines for extremities. The influence of frame-induced eddy currents on the risk of peripheral nerve stimulation was not investigated.

External Fixators↗