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Orthopaedics & Traumatology: Surgery & Research
Sous presse. Epreuves corrigées par l'auteur. Disponible en ligne depuis le mercredi 28 novembre 2018
Doi : 10.1016/j.otsr.2018.10.010
Received : 18 February 2018 ;  accepted : 26 October 2018
Two-stage revision shoulder prosthesis vs. permanent articulating antibiotic spacer in the treatment of periprosthetic shoulder infections
 

Antonio Pellegrini a, Claudio Legnani b, , Vittorio Macchi b, Enzo Meani a
a IRCCS Istituto Ortopedico Galeazzi, Centre for Reconstructive Surgery and Osteoarticular Infections, Milan, Italy 
b IRCCS Istituto Ortopedico Galeazzi, Sport Traumatology and Minimally Invasive Surgery Center, Milan, Italy 

Corresponding author. IRCCS Galeazzi Orthopaedic Institute, Via R. Galeazzi 4, Milan, Italy.IRCCS Galeazzi Orthopaedic InstituteVia R. Galeazzi 4MilanItaly
Abstract
Introduction

Periprosthetic shoulder infections (PSIs) represent a serious complication following shoulder arthroplasty. No consensus exists regarding the optimal option. We conducted a retrospective case-control study to compare the outcomes of 2-stage revision shoulder arthroplasty and those of definitive articulating antibiotic spacer implantation with regards to eradication of the infection, improvement of pain and shoulder function.

Materials and methods

Thirty patients treated for an infected shoulder arthroplasty were retrospectively reviewed after a mean follow-up of 8 years (range, 2–10 years). Nineteen underwent definitive articulating antibiotic spacer implantation and 11 underwent 2-stage revision arthroplasty. Mean age at surgery was 68.8 years. Assessment included Constant-Murley score, visual analog scale pain score, objective examination, patient subjective satisfaction score as well as standard radiographs.

Results

At the most recent follow-up, none of the patients had clinical or radiographic signs suggesting recurrent infection. Most patients reported satisfying subjective and objective outcomes. Follow-up examination showed significant improvement of all variables compared to preoperative values (p <0.001). Radiographs did not show progressive radiolucent lines or change in the position of the functional spacer. No statistically significant differences were reported between the two groups concerning Constant-Murley and VAS scores, while average forward flexion and abduction were significantly higher in patients undergoing 2-stage revision surgery.

Conclusions

Both surgical procedures provided infection eradication and satisfying subjective functional outcomes. Functional results were superior in patients treated with revision shoulder prosthesis, although a higher rate of complication was reported in this cohort of patients, thus suggesting the use of permanent spacer in high-risk or low-demanding elderly patients.

Level of evidence

III, Retrospective case-control study.

The full text of this article is available in PDF format.

Keywords : Infected shoulder arthroplasty, Periprosthetic shoulder infection, Antibiotic spacer, Revision arthroplasty




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