Lin Nan,Gao Weiyang,Zhou Zongwei.Analysis of imaging Features of different Chung type of Wassel type Ⅳ congnital thumb polydactyly[J].Journal of Clinical Pediatric Surgery,,21():353-357.[doi:10.3760/cma.j.cn101785-202012051-011]
Analysis of imaging Features of different Chung type of Wassel type Ⅳ congnital thumb polydactyly
- Keywords:
- Polydactyly/DI; Radiography; Magnetic Resonance Imaging; Wassel Type; Chung Type
- Abstract:
- ObjectiveTo evaluate the imaging features of different Chung types of Wassel type Ⅳ congenital thumb polydactyly.MethodsFrom June 2015 to June 2018,40 children hospitalized with Wassel type Ⅳ polydactyly were selected as research subjects.Radiography,magnetic resonance imaging(MRI)and intraoperative diagnosis were collected.Axial angle and basal spacing on anteroposterior and lateral radiographs were measured and angle×interspace distance on anteroposterior and lateral film axial,axial angle/interspace distance on anteroposterior and lateral film,axial angle on lateral film×interspace distance on anteroposterior film were calculated.Independent sample t test was performed by SPSS software and receiver operating characteristic(ROC)curve plotted.ResultsThe average interspace distance on anteroposterior film was (4.1±0.44)mm for Chung type Ⅰ patients and (1.71±0.27)mm for Chung type Ⅱ patients. The average axial angle on lateral film was (47.26±3.60)° for Chung type Ⅰ patients and (72.44±4.89)° for Chung type Ⅱ patients. The average axial angle/interspace distance on anteroposterior film was (17.23±2.59)°/mm for Chung type Ⅰ patients and (41.81±8.43)°/mm for Chung type Ⅱ patients. The average axial angle/interspace distance on lateral film was (14.30±1.57)°/mm for Chung type Ⅰ patients and (26.73±3.31)°/mm for Chung type Ⅱ patients. The average angle on lateral film/interspace distance on anteroposterior film was (18.37±3.45)°/mm for Chung type Ⅰ patients and (50.97±11.37)°/mm for Chung type Ⅱ patients. The above results had statistically differences (P<0.05). Chung Ⅱ type was used as the positive result to plot the ROC curve. The area under the ROC curve of angle on lateral film / interspace distance on anteroposterior film (0.929) was higher than axial angle on lateral film(0.859), axial angle/interspace distance on anteroposterior film(0.91) and axial angle / interspace distance on lateral film(0.859).The Cut-off point of the angle on lateral film / interspace distance on anteroposterior film was 27.41°/mm in ROC curve.ConclusionThe preoperative measurements and calculations of angle on lateral film/interspace distance on anteroposterior film may be used for distinguishing Chung types of polydactyly.
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Memo
收稿日期:2020-12-24;改回日期:。
基金项目:温州市科技计划项目(Y20180151)
通讯作者:高伟阳,Email:wygao1@163.com