A Case-control Study of 3D versus 2D Weight Bearing CT Measurements of the M1-M2 Intermetatarsal Angle in Hallux Valgus:

Foot & Ankle Orthopaedics

FrancoisLintz¹ 

关键词: hallux valgus intermetatarsal angle weight bearing ct 3D 2D measurements;   

DOI  :  10.1177/2473011418S00321

学科分类：医学（综合）

来源: Sage Journals

【 摘 要 】

Category:Midfoot/ForefootIntroduction/Purpose:Surgical planning based on angular measurements obtained on conventional radiographs is challenging due to perspective distortion and operator bias. Novel weightbearing CT (WBCT) three-dimensional (3D) measurements using coordinate systems may represent a more reliable and accurate evaluation of this 3D deformity. The objective of this study was to compare the M1-M2 intermetatarsal angle (IMA) obtained manually on WBCT digitally reconstructed 2D radiographs versus a set of coordinates from the full 3D dataset, in patients with hallux valgus (HV) deformity and in healthy controls.We hypothesised that the 3D measurements would be more reliably obtained, demonstrating different values when compared to 2D radiographic measurements.Methods:In this multicenter retrospective comparative study, 83 feet that underwent WBCT of the foot were included (41 HV: mean age 59, 81% female, 42 controls: mean age 52, 80% female). Datasets were analysed by three independent traine...

【 授权许可】

CC BY