الفهرس 
Implant MaterialOnly 14 pages are availabe for public view
 |  | from | 103 |  |  |
| | | from | 103 | | |
Abstract
SUMMARY
Fracture of the fixation device had been a fairly common
complication of fracture treatment in the past. With better
understanding of the function of the device (it is a temporary
splint until skeletal union is achived ) and with the improved
metallurgy it is a rare occurrence.
In Spite of its rare occurance, it is one of the most
important complications of surgical fracture treatment. The
purpose of this work is to draw attention to the problem and to
calrify its ateiology, as a primary and essential step
prophylactic measures to avoid its occurrence.
The implant materials which are used in the clinical
practice for orthopaedic surgery has been discussed with special
reference to metals and their mechanical properties.
The biomechanical aspect of plate and screws as the
most common method of internal fixation has been discussed
with special reference to AO plates and screws.
81
----------- -
The classification of the causes of implant falure has
been mentioned with special reference to the stages of fatigue
failure of the plate and the different types of carrosion of
metals.
In discussing the prophylactic measures to avoid implant
failure, concentrated on the proper time of surgery, the
importance of preoperative planning and proper technique of
reducing the fracture and applying the plate. Post operative care
has been discussed with special reference to weight bearing and
radiological follow up.
82
--._ .. ------------._-- - -----------._----- - -----