Since November 1989 till the end of 2007 year we have been operatively treating 752 of acetabular hip fractures. We have analised 750 operated patients, two patients bilateral fractures. The follow up span lasts from 2 till 20 years. The age of treated patients is from 14 till 79 years old. These fractures were divided into those operated to 21 days after trauma--569 operated acetabulum. And those operated after 21 days after trauma--183 patients with the delayed reconstruction of acetabular fractures from 22 till 229 days. Both groups were provided detailed assesement. And next we compared fracture reduction of broken acetabulum and assesement of clinical treatment. The types of fractures were defined according to classification of Judet-Letournel. The criteria of fracture reduction due to Letournel. The clinical result was based on Merle d'Aubigne-Matta scale. In the group of treated patients till 3 weeks after trauma, we have received 83.8% of very good and good results, 6.9% fair results and 9.3% poor results. During fracture reduction: 75% very good, 4% in secondary joint congruence, 17.8% fair and 3.2% poor. After fair reduction there was always the right congrugence between the head and acetabulum. The displacements to 3 mm were left in more cases as a part after weight-bearing area. In trauma fracture trated after 3 weeks, the result was very good and good 66.1%, fair 14.8% and poor 19.1%. During fracture reduction: 49.7% very good, 4.4% secondary joint congruence, 32.8% fair and 13.1% poor. We have noticed the crucial corelation between fracture reduction and the final result of treatment. Additional traumae, especially head with long time loss of consciousness and the traumae of chest with insufficient breathing have indirect infulence on treatment results causing the longer operation waiting. The complexity fractures also indirectly influence on the result of treatment decreasing the chances on anathomical fracture reduction.