Epidemiological comparison of adult fractures of distal humerus between east and west China from 2010 to 2011 / 中华创伤骨科杂志

ABSTRACT

Objective To compare and analyze the epidemiological features of adult patients with distal humerus fractures between the east and west China from 2010 to 2011.Methods The data of adult patients with distal humerus fracture treated from January 2010 to December 2011 in 63 hospitals in the east and west China were collected through the PACS system and case reports checking system.The data from 35 hospitals in the east China were classified as group A,and those from 28 hospitals in the west China as group B.The analytic items included gender,age and AO/OTA classification.Results A total of 2,668 cases were collected.The median age of the 1,852 cases in group A was 42 (IQR33) years old.The high peak age ranged from 21 to 30 years old;the gender ratio of group A was 1.181.The median age of the 816 cases in group B was 37 (IQR27) years old.The high peak age ranged from 31 to 40 years old;the gender ratio of group B was 1.801.Group A had a significantly lower gender ratio but a significantly higher median age than group B (P ＜ 0.05).The proportions of patients from 16 to 20 and from 31 to 40 years old in group A were significantly lower than those in group B but the proportion of patients aged above 61 years old in group A was significantly higher than that in group B (P ＜ 0.05).According to the AO/OTA classification,1,399 cases (52.44％) were type 13-A,682 ones (25.56％) type 13-B and 587 ones (22.00％) type 13-C.The proportions of type 13-A and type 13-A1 in group A were significantly lower than in group B (P ＜ 0.05).Conclusions Fractures of the distal humerus mostly occurred in the age range from 21 to 40 years old and in males.Type 13-A fractures were the most common.The east China had a significantly higher proportion of female patients,an older median age and a lower proportion of type 13-A1 fracture than the west China.