Dual-taper modular hip implant: Investigation of 3-dimensional surface scans for component contact, shape, and fit.

ABSTRACT:

Background

The etiology of wear particle generation and subsequent corrosion in modular total hip arthroplasty implants likely begins with mechanical fretting. The purpose of this study was to determine geometric features of the male and female taper surfaces that drive stability within the neck-stem junction.

Methods

Eighteen modular hip components received 3-dimensional surface scans to examine the neck-stem taper junction using an optical scanner. The normal distance between the surfaces of the neck taper as seated in the stem slot was measured and produced a color map of the contact proximity. Contour plots identified surface shape variation and contact. Angle measurements and neck seated depth were analyzed by regression.

Results

The typical features observed wer

SUBMITTER: Frisch NB 

PROVIDER: S-EPMC6123237 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature