Detection of infection in loosened hip prostheses: efficacy of sonography

The purpose of this study was to determine the efficacy of sonography in the detection of infection in loosened hip prostheses. The normal capsular morphology in 15 asymptomatic patients with total hip replacements was studied sonographically. Sonograms were then obtained in 33 patients who had pain...

Full description

Saved in:

Bibliographic Details
Published in:	American journal of roentgenology (1976) Vol. 163; no. 2; pp. 381 - 384
Main Authors:	van Holsbeeck, MT, Eyler, WR, Sherman, LS, Lombardi, TJ, Mezger, E, Verner, JJ, Schurman, JR, Jonsson, K
Format:	Journal Article
Language:	English
Published:	Leesburg, VA Am Roentgen Ray Soc 01-08-1994 American Roentgen Ray Society
Subjects:	Aged Bacterial Infections - diagnostic imaging Biological and medical sciences Candidiasis - diagnostic imaging Female Hip - diagnostic imaging Hip Joint - diagnostic imaging Hip Prosthesis - adverse effects Humans Male Medical sciences Middle Aged Orthopedic surgery Prosthesis Failure Prosthesis-Related Infections - diagnostic imaging Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases Ultrasonography Performance evaluation Infection Orthopedic surgery Prosthesis Echography Lower limb Technique Hip
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	The purpose of this study was to determine the efficacy of sonography in the detection of infection in loosened hip prostheses. The normal capsular morphology in 15 asymptomatic patients with total hip replacements was studied sonographically. Sonograms were then obtained in 33 patients who had pain in the hip after arthroplasty and radiologic findings of loosening of the prosthesis. These patients subsequently underwent aspiration and arthrography of the hip. Six of the 33 symptomatic patients proved to have prosthetic joint infection. On sonograms, the normal pseudocapsule is adherent to the proximal part of the anterior femoral cortex, and the capsule-to-bone distance is less than 3.2 mm (average, 2.6 mm). No hips with a capsule-to-bone distance less than 3.2 mm were infected. Sonograms in the six patients with infection showed marked intraarticular effusion with a mean capsule-to-bone distance of 10.2 mm. Five of these six had extracapsular fluid collections. Two patients with hip dislocations and four with aseptic loosening of the prosthesis had capsular distension on sonograms and cultures of aspirated material that showed no growth. Sonography can be used to diagnose infection around loosened hip prostheses. All patients who had an intraarticular effusion with extraarticular extension seen on sonograms had infection.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0361-803X 1546-3141
DOI:	10.2214/ajr.163.2.8037036