Comparison of Two Different Glenoid Bone Loss Calculation Methods using Three-Dimensional Computed Tomography

• Published in: Journal of clinical and diagnostic research Vol. 13; no. 11; pp. TC01 - TC03
• Main Authors: Pawar, Abhijit D, Rangankar, Varsha P, Bhole, Priya R
• Format: Journal Article
• Language: English
• Published: JCDR Research and Publications Private Limited 01.11.2019
• Subjects: bankart’s lesion; best fit method; griffith’s method; shoulder dislocation
• ISSN: 2249-782X; 0973-709X
• DOI: 10.7860/JCDR/2019/42549.13276

Introduction: An accurate estimation of the glenoid bone loss is an important factor in management of glenohumeral instability. Three-dimensional Computed Tomography (CT) technique is the most widely used modality. Various methods are used for glenoid bone loss calculations on CT. Aim: To compare the two methods of glenoid bone loss evaluation namely, Griffith’s and Best fit circle method using three-dimensional CT. Materials and Methods: A retrospective study was conducted in which a total of 34 patients with recurrent shoulder dislocations who underwent computed tomography, were included in the study. Scans were reconstructed using multiplanar reconstructions and bone loss was evaluated using the Griffith’s index and Best fit circle method. Quantitative data were calculated as mean±SD. The chi-squared test was used to determine the p-value. Results: The mean for percentage glenoid bone loss using Griffith method was 18.8±6.6 and by best fit circle method was 18.8±5.9. The p-value was 1 and the t value was 0, proving that there is no statistical difference between both these tests. Conclusion: The results of the study showed that best fit circle method is comparable to Griffith’s method for estimation of bone loss (p=1) and can be used alone on the affected glenoid.