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. 2019 Oct;28(10):1971-1976.
doi: 10.1016/j.jse.2019.02.027. Epub 2019 May 10.

Arthroscopy of the symptomatic shoulder arthroplasty

Ciaran Doherty  1 , Nicholas D Furness  1 , Timothy Batten  1 , William J White  2 , Jeffrey Kitson  3 , Christopher D Smith  3
Affiliations

Arthroscopy of the symptomatic shoulder arthroplasty

Ciaran Doherty et al. J Shoulder Elbow Surg. 2019 Oct.

Abstract

Background: Assessment of a painful or stiff shoulder arthroplasty can be challenging. The cause of pain can sometimes be easily identified. However, some patients have normal levels of inflammatory markers, normal plain films, and no clinical signs to indicate a diagnosis. Indolent organisms may not raise blood marker levels or result in obvious radiologic findings such as loosening. We report the utility of performing arthroscopy in these patients for a diagnostic advantage.

Methods: We retrospectively reviewed the health records of all patients who underwent diagnostic shoulder arthroscopy over a 3-year period. Patients were included if they were aged 18 years or older, had undergone previous arthroplasty surgery, and had symptoms of shoulder pain or stiffness. Patients were excluded if they had any traditional symptoms of infection or had a raised serum white cell count or C-reactive protein level prior to diagnostic arthroscopy.

Results: Fourteen patients met the initial inclusion criteria. The mean interval between index surgery and arthroscopic evaluation was 65.4 months (standard deviation, 58 months; range, 17-192 months). Arthroscopic biopsy specimens returned positive culture results in 3 patients (21%). Rotator cuff tears were noted in 8 patients (57%). Capsular contraction requiring release was noted in 2 patients (10%). In all patients, the diagnostic arthroscopy directed the next stage of management.

Conclusions: Diagnostic arthroscopy allows a full assessment of implants, the rotator cuff, the native articular surfaces, and scar tissue, as well as biopsy specimens to be obtained for indolent infection, in patients considering revision arthroplasty surgery. This allows a more informative consent process for patients, directs surgical management, and on occasion, allows for therapeutic intervention in a painful or stiff shoulder arthroplasty.

Keywords: Cutibacterium acnes; Shoulder; arthroplasty; arthroscopy; diagnostic; infection; stiffness.

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