The lateralization and distalization index is more reliable than angular radiographic measurements in reverse shoulder arthroplasty.

ABSTRACT:

Background

The lateralization shoulder angle (LSA) and distalization shoulder angle (DSA) are used to reproducibly measure lateralization and distalization after reverse shoulder arthroplasty (RSA). However, LSA and DSA may not offer a precise measurement of humeral lateralization and distalization and this relationship has not been explored. The aim of this study was to evaluate the validity of these measurements and to propose new measurement methods to estimate implant lateralization and distalization.

Methods

3D models were constructed from computed tomography (CT) scans of 30 patients using a software platform. For each patient 24 different RSA modifications were created, resulting in 720 different RSA configurations. For each configuration LSA and DSA angles as well as

SUBMITTER: Okutan AE 

PROVIDER: S-EPMC11417055 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature