How relevant is lumbar bone mineral density for the stability of symphyseal implants? A biomechanical cadaver study.

ABSTRACT:

Purpose

Osteoporotic bone tissue appears to be an important risk factor for implant loosening, compromising the stability of surgical implants. However, it is unclear whether lumbar measured bone mineral density (BMD) is of any predictive value for stability of surgical implants at the pubic symphysis. This study examines the fixation strength of cortical screws in human cadaver specimens with different BMDs.

Methods

The lumbar BMD of ten human specimens was measured using quantitative computed tomography (qCT). A cut-off BMD was set at 120 mg Ca-Ha/mL, dividing the specimens into two groups. One cortical screw was drilled into each superior pubic ramus. The screw was withdrawn in an axial direction with a steady speed and considered failed when a force decrease was detected

SUBMITTER: Schwaabe F 

PROVIDER: S-EPMC9360150 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature