Comparison of Postoperative Results of Modified Chevron and Z Osteotomies in the Treatment of Hallux Valgus Deformity

Aim: To analyze and compare postoperative results of HV patients operated using Chevron and Z methods. Objectives: 1) Perform demographic analysis of the patients. 2) Compare preoperative and postoperative HVA, IMA and DMAA. 3) Perform retrospective survey using questionnaire based on ACFAS and compare results between Chevron and Z groups. Methods: Retrospective non-random sample study. All HV patients operated between the year 2011 and 2013 in Orthopedic and trauma surgery department of LSMULKK (102 HV cases) were included in this study. HVA, IMA and DMAA in radiographic pictures were measured for all cases. Patients were surveyd with questionnaire based on ACFAS, also they were asked to evaluate postoperative result. Data distribution was evaluated using Kolmogorov-Smirnov test. Student t test was performed for data with normal distribution and Mann – Whitney U test was performed for data with non-normal distribution. Correlations were evaluated using Pearson test. Chi-square test was applied for rank data. Results: HVA correction was greater (p=0.05) in Z group 27,41±7,22 than Chevron 25,02±7,63. IMA correction was also greater (p=0.025) in Z group 10,64±8,46 than Chevron 9,91±3,55). DMAA correction was greater (p<0.001) in Z group 27,04±9,89 than Chevron 17,72±7,29. Patients operated using Chevron method evaluated postoperative result with 92,08±9,768 points, and using Z group with 83,28±17,343 points (p=0.017). Conclusions: 1. Average patient age was 41 years and it did not differ between Chevron and Z groups. Most of the patients were of female sex. 2. Postoperative IMA and DMAA differences between groups were not statistically significant. Postoperative IMA was lower in Chevron group (p = 0,035). HVA, DMAA and HVA correction was greater in Z group (p