By Fridolin Séquin, Rigmor Texhammar (auth.)
During their twenty years of job contributors of the Associa tion for the research of inner Fixation (AO - ASIF) have made authoritative contributions to the advance of inner and exterior fixation. The shut collaboration of surgeons, uncomplicated researchers, metallurgists, engineers and the institution of scientific documentation has made it attainable to accomplish a great clinical 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 concepts. whilst a scienti fic and workmanlike instrumentation used to be constructed. the belief was once to maintain diversification inside limits yet, in spite of the fact that, to gather a finished number of implants and in struments to reply to the entire difficulties provided via the com plexity of bone operations. Osteosynthesis is a tricky and significant operative procedure. Its. claims at the health 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 finished this activity with specialist wisdom. He has prepared over a long time classes for theatre nurses and has been capable from the ensuing event to supply worthwhile feedback. whilst RIGMOR TEXHAMMAR R. N. joined AO-International 4 years in the past, it used to be usual to incorporate her as a co-author.
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5-mm Tap with Long Thread For cutting threads in both cortices for insertion of a platefixation screw. 5-mm thread is never cut through a plate hole as this would damage both the plate and tap. 5-mm Tap for QUick-Coupling Has the same applications as above. It fits into the quickcoupling of the tap handle (never use it with air drill). 35 Comments on the Taps The taps are always used with the corresponding tap sleeve. Ordinarily, the taps are driven with the aid of a handle. They can also be driven with the small air drill (quick-coupling).
2-mm thread hole for the compression screw is cut through one of the remaining two holes in the template. After the drill template is replaced by the DCP, the second screw is in the proper position for exerting compression. 2 mm) for attaching the tension device to the bone. The more distant sleeve of the drill guide is used for articulated tension devices or for the device with a 16-mm span. The near sleeve is used for the tension device with an 8-mm span. Articulated Tension Device (Span 20 mm) This device can be used to produce either compression or distraction, as desired.
In this case, drill bits for the Jacobs chuck or a quick-coupling adapter should be used. Bending Instruments These are necessary for contouring (bending and twisting) plates to fit the bone. This may be done with either: \ - The bending press and one or two bending irons or - The bending pliers and two bending irons Also see "Contouring of Plates," p. 79. 3 Special Supplementary Instruments These are instruments that may make the surgeon's work easier in special cases. 5-mm cancellous bone screws) or for drilling in a deep wound.
AO/ASIF Instrumentation: Manual of Use and Care by Fridolin Séquin, Rigmor Texhammar (auth.)
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