It is with pleasure that we offer these introductory remarks for the
Manual of Internal Fixation in the Horse, a book describing a further
application of AO or ASIF techniques. The letters A-O stand for the
Arbeitsgemeinschaft fUr Osteosynthesefragen and have been trans- lated
into the Association for the Study of Internal Fixation. The
organization is truly a "study group", created in Switzerland, that met
for the first time in 1958. The major goal was to establish a task of
fracture treatment by force committed to the improvement osteosynthesis.
The group's motivation arose out of the then prevailing unsound or
inconsistently successful attempts at fracture treatment. According to
statistics obtained from the Swiss National Health Insurance Program at
the time, the so-called conservative treatment of fractures had resulted
in a high rate of persistent morbidity. The problems encoun- tered
included: irreparable damage due to long-term immobilization; delayed
union or pseudoarthrosis; malalignment; and, inadequate reduction of
intraarticular fractures with resultant osteoarthritis. Accurate, stable
osteosynthesis seemed the only practical way to address those various
shortcomings. However, many of the osteosyn- theses performed at that
time had led to new problems, since most were not stable and, in some
cases, actually worked to prevent healing.