Designing and validating a comparison card method for quantification of glenoid bone defect

Area of Science:

• Orthopedic surgery
• Radiology
• Biomedical engineering

Background:

• Glenoid bone defects, such as bony Bankart lesions, are crucial in shoulder instability.
• Accurate assessment of defect size is vital for surgical planning and outcomes.
• Current methods like the Sugaya method require comparison with novel, user-friendly tools.

Purpose of the Study:

• To design and evaluate a novel comparison card for assessing glenoid bone defects.
• To compare the accuracy and reliability of the comparison card against the established Sugaya method.
• To determine the clinical utility of the comparison card in evaluating bony Bankart lesions.

Main Methods:

• A comparison card was designed to measure glenoid bone defects.
• 33 patients with bony Bankart lesions were included in the study.
• Three participants performed measurements using both the comparison card and the Sugaya method on two separate occasions.
• Intra- and inter-observer reliability were assessed using the intra-class correlation coefficient (ICC).
• Concordance between the two methods was analyzed using Bland-Altman analysis.

Main Results:

• The comparison card demonstrated comparable accuracy to the Sugaya method in measuring glenoid bone defect percentage (no statistically significant difference, P > 0.05).
• Both methods showed high intra- and inter-observer reliability for the comparison card (ICC > 0.75).
• Bland-Altman analysis confirmed agreement between the comparison card and Sugaya method in both measurements, with minimal bias and acceptable limits of agreement.

Conclusions:

• The developed comparison card is a reliable and convenient tool for evaluating glenoid bone defects.
• It offers similar accuracy to the Sugaya method, making it a valuable aid in assessing bony Bankart lesions.
• This tool can potentially simplify and improve the assessment of glenoid bone loss in clinical practice.