Precision of CT-based micromotion analysis is comparable to radiostereometry for early migration measurements in cemented acetabular cups.

ABSTRACT: Background and purpose - CT (computed tomography) based methods have lately been considered an alternative to radiostereometry (RSA) for assessing early implant migration. However, no study has directly compared the 2 methods in a clinical setting. We estimated the precision and effective radiation dose of a CT-based method and compared it with marker-based RSA in 10 patients with hip arthroplasty.Patients and methods - We included 10 patients who underwent total hip replacement with a cemented cup. CT and RSA double examinations were performed postoperatively, and precision and effective dose data were compared. The CT data was analyzed with CT micromotion analysis (CTMA) software both with and without the use of bone markers. The RSA images were analyzed with RSA software with the use of

SUBMITTER: Broden C 

PROVIDER: S-EPMC8381926 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature