Variability of Cutting and Thermal Dynamics Between New and Used Acetabular Reamers During Total Hip Arthroplasty.

ABSTRACT:

Background

Aseptic loosening of the acetabular component remains one of the leading causes of early failure of total hip arthroplasty. Poor apposition of bone onto the implant surface can be due to inaccurate reaming and osteonecrosis of the acetabular bone due to the heat generated while reaming.

Methods

New and used acetabular reamers were tested on an MTS system using a clinically relevant force of 87.6 N. A thermal profile and depth achieved by the reamers were analyzed and compared between the 2 cohorts. Heat generated and force required for the community used reamers to achieve the same depth as the new reamers were subsequently analyzed.

Results

The new reamers achieved a depth 3.4 mm deeper than the community reamers (P < .001). The new reamers generate

SUBMITTER: Sherman WF 

PROVIDER: S-EPMC7818610 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature