Impact of 3D CT Reconstructed Deltoid Size, Shape, and Volume Measurements on Active Range of Motion Before and After Anatomic and Reverse Total Shoulder Arthroplasty

Description

This presentation from the ISTA 2024 conference held in Nashville discusses a pilot study on the radiomic analysis of the deltoid muscle's size, shape, and volume in relation to pre-operative and post-operative motion outcomes following anatomic reversal arthroplasty. The speaker (Christopher P Roche) introduces the significance of the deltoid muscle in shoulder movement and highlights the common oversight by physicians in assessing it during treatment planning due to subjective evaluation methods. The study aims to leverage radiomic techniques to provide quantitative analysis of deltoid characteristics, using a dataset of around 1,000 models to evaluate specific measurements. Key metrics include deltoid volume measures, normalized dimensions, flatness, and sphericity. The implications of these measurements on clinical thresholds of motion pre- and post-surgery are examined. Results indicate that deltoid shape and size correlate with motion capabilities, revealing that larger deltoids had greater pre-operative motion, suggesting a potential ceiling effect on post-operative improvements. The study concludes the need for further exploration of these measures and their predictive capabilities, creating a foundation for future research in deltoid assessment and treatment outcomes.

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