Comparison between model-based RSA and an AI-based CT-RSA: an accuracy study of 30 patients.

ABSTRACT:

Background and purpose

Radiostereometry (RSA) is the current gold standard for evaluating early implant migration. CT-based migration analysis is a promising method, with fewer handling requirements compared with RSA and no need for implanted bone-markers. We aimed to evaluate agreement between a new artificial intelligence (AI)-based CT-RSA and model-based RSA (MBRSA) in measuring migration of cup and stem in total hip arthroplasty (THA).

Patients and methods

30 patients with THA for primary osteoarthritis (OA) were included. RSA examinations were performed on the first postoperative day, and at 2 weeks, 3 months, 1, 2, and 5 years after surgery. A low-dose CT scan was done at 2 weeks and 5 years. The agreement between the migration results obtained from MBRSA and AI-based

SUBMITTER: Christensson A 

PROVIDER: S-EPMC10824248 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature