Analysis of glenohumeral joint intraarticular pressure measurements in volume-limited MR arthrograms in patients with shoulder-instability compared to a control group.

Galvin, Joseph W; Ernat, Justin J; Grippo, Ryan J; Li, Xinning; Parada, Stephen A; Eichinger, Josef K · J Orthop · 2020

cross_sectional · Level IV

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Abstract

Compare intraarticular pressure of the glenohumeral joint in patients with and without shoulder instability after a volume-limited arthrogram. Patients aged 18-45 years with shoulder instability or pain were included. After injecting 10 cc of contrast-mixture, intraarticular pressure was recorded using an arterial-line pressure-transducer connected to a portable monitor. 14/16 (86%) patients were included - 7/14 (50%) had instability. Post-injection pressure measurement averaged 59.9 ± 44.0 mmHg (range 15-181). Instability patients averaged 60.8 ± 37.6 (range 15-117) versus 41.9 ± 14.0 mmHg (range 30-64) for non-instability (p > 0.1). Glenohumeral pressure measurements are variable when utilizing standardized volume-limited arthrograms.

Anatomy