50 years later. Danis combined internal ?xation development of these ?elds. In the course of its wor- with the new technique of interfragmentary compres- wide response,the AO/ASIF philosophy has been able to sion,which led to primary bone healing that allowed full attract distinguished authors to join the faculty of function at the same time. Reacting to disconcerting sta- AO/ASIF courses. By sharing their clinical,experim- tistics about the results of conservative fracture treat- tal,and theoretical experience,they take part in shaping ment, Mueller then applied interfragmentary compres- a special internal ?xation technique in the craniofacial sion to 80 patients in Switzerland and con?rmed its use- skeleton. The philosophical aspect of AO/ASIF courses fulness. in theory and practice assures high standards of quality.