A comparative biomechanical study of a non-threaded triangular titanium implant versus a fully threaded screw: assessing pullout strength of two sacroiliac joint fixation implant designs.

ABSTRACT:

Background

Considering that implant backout is a recognized mode of failure, evaluating the pullout strength is critical for assessing anchoring efficacy. The Sacrix^® fully threaded screw (TS) was designed specifically for Less Exposure Spine Surgery (LESS) to reduce incision size, surgical time, and blood loss, using two implants for sacroiliac joint (SIJ) fixation. This study compares the Sacrix^® design with the SI-Bone iFuse non-threaded triangular titanium implant (TTI) design, which is widely regarded as the industry standard, and represents the first comparative biomechanical pullout strength study of these implant designs currently used in SIJ fusions.

Methods

We conducted mechanical static axial pullout tests on three 7.0 mm × 45 mm iFuse non-th

SUBMITTER: Chin KR 

PROVIDER: S-EPMC11998034 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature