Computed Tomography-Based Templating of Proximal Ulna Intramedullary Screw Fixation.

ABSTRACT:

Background

Intramedullary screw fixation of the proximal ulna can be used for fixation of the ulnar component in total elbow arthroplasty. Our purpose was to use computed tomography (CT) to characterize proximal ulna anatomy with respect to intramedullary screw fixation, and then to validate this templating process by inserting intramedullary screws into 3-dimensional (3D)-printed models.

Methods

Thirty elbow CT scans were reformatted in the axis of the proximal ulna. Screw placement was templated by fixing a length at 78 mm distal to the centerline of ulnohumeral rotation and measuring diameter, and then fixing the screw pitch diameter to 5.5 mm and measuring length. Three-dimensional models were printed for 5 patients, and intramedullary screws were advanced as distal as p

SUBMITTER: Goyal N 

PROVIDER: S-EPMC11833885 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature