Tribocorrosion: Ceramic and Oxidized Zirconium vs Cobalt-Chromium Heads in Total Hip Arthroplasty.

Background: This matched-cohort study aims to compare tribocorrosion between matched ceramic and cobalt-chromium femoral head trunnions and between matched Oxinium and cobalt-chromium femoral head trunnions. Secondary objectives were to investigate whether taper design, depth of trunnion, implantation time, age, body mass index, and gender have an effect on fretting and corrosion.

Methods: All hip prostheses retrieved between 1999 and 2015 at one center were reviewed, giving a total of 52 ceramic heads.

Trunnionosis: Does Head Size Affect Fretting and Corrosion in Total Hip Arthroplasty?

Background: Wear and tribocorrosion at the modular head-neck taper interface may be a cause of failure in metal-on-polyethylene total hip arthroplasty (THA). The present investigation endeavored to elucidate the effect of femoral head diameter on fretting and corrosion in retrieved head-neck tapers.

Methods: A retrieval analysis of THA prostheses in vivo for a minimum of 1 year was performed.

Effect of Taper Design on Trunnionosis in Metal on Polyethylene Total Hip Arthroplasty.

This study examines how taper design affects corrosion and fretting at the head trunnion surface. All hip prostheses retrieved between 1999 and 2013 with 28mm/+0 heads were selected, resulting in 44 cobalt-chrome-on-polyethylene implants, representing six taper designs. Mean implantation time: 8.

Association of surgeon factors with outcome scores after total knee arthroplasty.

Purpose: To identify preoperative factors (including surgeon factors) associated with outcome scores after total knee arthroplasty (TKA).

Methods: Medical records of 2848 patients (3458 knees) who underwent primary TKA by 27 orthopaedic specialists were retrieved. Three specialty knee surgeons who had one-year fellowship in TKA performed 1930 TKAs, and 24 general orthopaedic surgeons performed 1528 TKAs.