Download AO/ASIF Instrumentation: Manual of Use and Care by Fridolin Séquin, Rigmor Texhammar (auth.) PDF

By Fridolin Séquin, Rigmor Texhammar (auth.)

During their two decades of job individuals of the Associa­ tion for the learn of inner Fixation (AO - ASIF) have made authoritative contributions to the improvement of inner and exterior fixation. The shut collaboration of surgeons, easy researchers, metallurgists, engineers and the institution of medical documentation has made it attainable to accomplish a high-quality medical foundation for inner fixa­ tion. transparent definitions for the standardization of alternative varieties of osteosynthesis have been attainable: interfragmentary compression, splintage and buttressing in addition to combina­ tions of those 3 innovations. even as a scienti­ fic and workmanlike instrumentation used to be constructed. the assumption used to be to maintain diversification inside of limits yet, despite the fact that, to gather a entire number of implants and in­ struments to respond to the entire difficulties offered via the com plexity of bone operations. Osteosynthesis is a tough and critical operative technique. Its. claims at the medical professional and the theatre employees are excessive. accordingly plans have existed for a very long time to complement the "Manual of inner Fixation" with a de­ tailed description of the AO Instrumentation, its use and upkeep. Our collaborator FRIDOLIN SEQUIN, graduate engineer, has entire this activity with professional wisdom. He has prepared over decades classes for theatre nurses and has been capable from the ensuing event to supply priceless feedback. while RIGMOR TEXHAMMAR R. N. joined AO-International 4 years in the past, it was once usual to incorporate her as a co-author.

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Additional resources for AO/ASIF Instrumentation: Manual of Use and Care

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If a fracture ·or osteotomy is to be treated by internal fixation, the basic requirement of the method must be satisfied: The basic requirement of internal fixation is stability! During the course of healing and postoperative care, xrays will indicate whether or not this goal has been achieved: The characteristic sign of continued stability of the internal fixation is union of the fragments without the formation of an irritation callus. 17 The Principles of the AO (ASIF) Technique There are two basic principles involved in the effective internal fixation: These are interfragmental compression and splinting.

The standards for implant metals vary within each single specification, and also from one specification to another; they do not ensure compatibility. Mechanical and metallurgical compatibility of implants, therefore, remains the responsibility of the manufacturer. 29 "Shared responsibility", as would occur when mixing implants of different origin, is impossible. The medico-legal implications of mixing implants is self-evident. A decision should be made in favor of one system. Today, only the AO/ ASIF offers a comprehensive selection of clinically evaluated implants, instruments, and operative techniques.

The operative technique is essentially different for cortex screws (fully threaded) and for cancellous bone and malleolar screws (partially threaded) and will therefore be discussed separately for the different screw types. :~ ' .. " .... ~ To permit the cortex screw to glide freely through the near fragment, a gliding hole is drilled through the near cortex, which is equal to the thread diameter. A smaller thread hole is drilled through the opposite cortex, coaxial to the gliding hole, and is subsequently tapped.

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