Bi-planar calibration method for templating of hip joint arthroplasty: phantom study and proof of concept.

ABSTRACT:

Purpose

Calibration of radiographs is a critical step in digital templating for hip arthroplasty. Calibration errors of > 1.5% lead to over- or undersizing of the templated implants and may affect logistics and patient safety. Contemporary calibration methods are known to be imprecise with average errors of 6.5% and wide variance. A novel bi-planar radiograph-based calibration method is proposed, and a phantom study was conducted as proof of concept.

Methods

A spherical external calibration marker (ECM) is placed in front of the pubic symphysis of a pelvic bone model at twelve different positions. For each marker position, standard anteroposterior radiographs and four corresponding lateral radiographs with different degrees of rotation (0°-30°) are taken (overall, 60 radiogr

SUBMITTER: Boese CK 

PROVIDER: S-EPMC10079716 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature