Objective To evaluate the clinical significance of anatomic reduction and internal fixation of posterior malleolar fracture in ankle fracture surgical treatment. Methods Fifty-four patients with posterior malleolar fracture were treated with anatomic reduction and internal fixation from March 2005 to June 2010. The patients groups consisted of 36 males and 18 females. According to CT scan classification,the group was made up of 36 type Ⅰ cases, 10 type Ⅱ and 8 type Ⅲ cases. All patients were evaluated with modified Baird-Jackson scoring system. The relationship between final result and fracture pattern , fixation methods, the time of exercise initiation fitted operation were analyzed respectively. Results The followedup period varied from 6 months to 36 months, with an average of 18 months. The number of patients whose result was excellent, good, fair and poor was respective 29,18 ,5 and 2. The total percent age of good to excellent clinical result was 87. 03%. There were 4 patients who had only slight pain after long time walking ,the remainder patients were completed with no pain. Conclusion Operative treatment may provide satisfactory fracture anatomic reduction and internal fixation for posterior malleolar fracture. Correct fracture pattern estimation and proper internal fixation are important to achieve and improve reduction quality, and to ameliorate better long term results.

Objective: To understand the homosexual behavior and related factors among married MSM in Mianyang city. Methods: Between January and October in 2017, a snowball sampling method was adopted to carry out cross-sectional survey through questionnaires plus HIV testing among those MSM in Mianyang city. Logistic regression model was used to analyze homosexual behaviors and related factors among married MSM under study. Statistical analysis was used by EpiData 3.1 and SPSS 19.0 software. Results: A total of 234 MSM participated in this survey. The overall rate of homosexual behavior in these married MSM appeared as 94.9% (222/234). Rate of having anal sex behavior was 94.4% (221/234) in the past 6 months, with rate of condom use as 57.9% (128/221). HIV positive rate was 8.1% (18/222). As for the motives for homosexual behavior after marriage, 87.8% (195/222) were driven by feelings of love, 12.2% (27/222) due to 'releasing pressure’. Proportion of male sex partners would include occasional sex partners (62.2%, 138/222), stable male sex partners (26.1%, 58/222) and stable boyfriends (11.7%, 26/222). Factors from logistic regression analysis showed that homosexual behaviors were related to the factors including education level of senior high school or above vs. education level of junior middle school or below (OR=3.65, 95%CI: 1.33-9.98); local residency over one year vs. the ones having local residency less than one year (OR=23.28, 95%CI:1.67-324.89); having 10 or more friends in the MSM community vs. having below 10 friends in MSM community (OR=4.15, 95%CI: 1.28-13.43); without sex pleasure with spouse vs. having sex pleasure with spouse (OR=3.25, 95%CI: 1.22-8.62); having 2 or more anal sex partners in the past 6 months vs. having less than 2 anal sex partners in the past 6 months (OR=0.28,95%CI: 0.09-0.81). Conclusions The rate of homosexual behavior and HIV positive rate were high among MSM in Mianyang city. Homosexual behaviors after marriage were influenced by multiple factors among MSM. The motives of homosexual behavior after marriage were driven by feelings of love, the related factors were education level of senior high school or above, local residency over one year, having 10 or more friends in the MSM community and without sex pleasure with spouse. As for the motives of these behaviors was caused by releasing pressure, the related factors was having more than 2 anal sex partners.