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Orthopaedic Proceedings
Vol. 101-B, Issue SUPP_14 | Pages 74 - 74
1 Dec 2019
Pastor I Poilvache H Morcillo D van Cauter M Rodriguez-Villalobos H Yombi J Cornu O
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Aim

We wonder what the results of two stage procedures were in terms of morbidity (amputation, dead) and infection recurrence. We also seek to identify risk factors for failure and see if the results of a second two stage surgery were not even worse.

Material and Methods

We retrospectively reviewed 140 prosthetic joint infection (PJI) treated with a two stage procedure. Patient data has been reviewed to determine which factors would be predictive for failure.


Orthopaedic Proceedings
Vol. 101-B, Issue SUPP_14 | Pages 45 - 45
1 Dec 2019
Huard M Detrembleur C Poilvache H van Cauter M Driesen R Yombi J Neyt J Cornu O
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Aim

Apart from other biomarkers isolated in the synovial fluid, alpha-defensin appears to be a promising diagnostic tool to confirm a periprosthetic joint infection (PJI) in the hip or knee. The purpose of this study was to evaluate the sensitivity and specificity of an alpha defensin lateral flow (ADLF) test compared to usual standard classifications in the diagnostic management of PJI.

Method

This investigation was set up as a multicenter prospective cohort study. Synovial fluid was obtained by means of joint aspiration or intra-operative tissue biopsies. A presumptive PJI diagnosis was made according to criteria outlined by the Musculoskeletal Infection Society (MSIS), the Infectious Diseases Society of America (IDSA) and the European Bone and Joint Infection Society (EBJIS). The intention to treat by the surgeon was logged. Sensibility and specificity for the ADLF test was plotted for each aforementioned diagnostic algorithm. Spearman correlations between all scores were analyzed. Multiple logistic regression was used to determine the contribution of independent variables to the probability of PJI.


Orthopaedic Proceedings
Vol. 101-B, Issue SUPP_14 | Pages 8 - 8
1 Dec 2019
Morcillo D Pastor I Detrembleur C Poilvache H van Cauter M Yombi J Cornu O
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Background

DAIR is an attractive treatment for PJI. The purpose of this study is to determine predictive factors of failure.

Materials and Methods

We reviewed all DAIR procedures for hip PJI performed between 2002–2017 (n=69). Data recorded included all factors correlated with treatment failure. KLIC score and an adapted McPherson score (sum of three criteria where the lower score is three for 3 A and the higher is 9 for 3 C) were analyzed.


Orthopaedic Proceedings
Vol. 98-B, Issue SUPP_23 | Pages 30 - 30
1 Dec 2016
Cornu O Van Cauter M Kaminski L Jean-Cyr Y Rodriguez-Villalobos H
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Aim

Bacterial identification in musculoskeletal infection is sometimes difficult and treatment strategy difficult facing unknown pathogen agent. We wonder if the delay of incubation and the preservation conditions of the samples between surgical procurement and subculture on plates have an influence.

Method

25 cm³ bone fragments were obtained from femoral heads retrieved during hip arthroplasty and excluded for bone transplant donation. Informed consent was obtained from the donor for research purpose. The study was approved by the Ethic Committee (N°B403201317725). Bone fragments were immersed for 30 minutes under gently agitation (140 RPM) at 35°C in a physiologic solution (negative control) or two solutions with two concentrations of staphylococcus epidermidis (0.5 Mc Farland or 1.5× 108 bacteria and 7.5×102 bacteria). Bone samples were separated and preserved at room temperature or at 4°C until seeded on Petri Plates to observe the influence of preservation conditions. Samples were plated after different delays (T0, T30min, T1H, T2H, T4H, T6H, T8H, T12H, T16H, T24H et T48H) to observe the influence of delay of culture. Experiments were repeated 5 times. When culture was positive, results were expressed with the number of colony.