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Abstract Objective To explore the clinical effect of limited open reduction and internal fixation for irreducible femoral neck fracture with modified Heuter approach.Methods From June 2011 to September 2016，47 cases of irreducible femoral neck fractures were divided into two groups (Groups A and Groups B)，24 and 23 cases in each group respectively.The cases in Groups A were experienced limited open reduction and percutaneous cannulated screw fixation with modified Heuter approach，and the cases in Groups B were experienced closed reduction and percutaneous hollow nail fixation.The quality of reduction，time of operation，amount of bleeding，number of fluoroscopy and complications were compared in the two groups，and scored according to the Harris score to evaluated hip joint function.Results All patients were followed up for an average of 18.3 months (14~24 months).The operative time was (41.3±9.5)min and times of fluoroscopy (8.4±2.1) in group A compared with group B，operative time (89.0±17.8)min、times of fluoroscopy (16.6±2.9) were significantly difference (P＜0.05).And the Harris score of hip joint function (87.35±4.8) in group A is higher than (64.12±7.6) in group B (P＜0.05).Compared with the group B，the satisfactory rate of reduction of femoral neck fracture and incidence of complications in the group A were significantly difference (P＜0.05).There was no significant difference in bleeding volume between two groups (P＞0.05).Conclusion Limited open reduction and internal fixation for irreducible femoral neck fracture with modified Heuter approach have some advantages on improving the reduction quality of fracture，shortening operation time，reducing the amount of radiation of the medical staff and incidence of postoperative complications，especially improving Harris scores of hip joint.It is worth popularizing in clinical application.
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