M173-4

Joint Fluid: Cutibacterium (Propionibacterium) acnes – Shipped November 06, 2017

HISTORY

A simulated joint fluid collected from a 72 year old female patient with shoulder prosthesis was sent to category A laboratories.

Participants were expected to identify and report Propionibacterium acnes.

 

MAIN EDUCATIONAL POINTS from M173-4

  1. P. acnes is a significant pathogen in orthopedic surgery especially after shoulder surgery and especially following shoulder arthroplasty with prosthetic material.
  2. Optimal recovery of P. acnes in suspected bone and joint infections requires prolonged cultivation preferably using blood culture media for at least 7 days.

Full critique (PDF)

Posted in Clinical Bacteriology Results, critiques