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International Orthopaedics

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Open Access 02-02-2024 | Original Paper

A formula for instability-related bone loss: estimating glenoid width and redefining bare spot

Authors: Zhongkai Ren, Fengkun Wang, Xiaohong Huang, Jian Wang, Yingze Zhang, Tengbo Yu

Published in: International Orthopaedics | Issue 4/2024

Abstract

Purpose

The aim of the study reveals a new intuitive method for preoperatively assessing defect ratio in glenoid deficiency based on the native glenoid width and the bare spot.

Methods

A linear relationship, i.e. the rh formula, between the native glenoid width (2r) and height (h) was revealed by a cadaver cohort (n = 204). To validate the reliability of the rh formula, 280 3D-CT images of intact glenoids were recruited. To evaluate the accuracy of rh formula in estimating glenoid defect, the 65 anterior–inferior defect models were artificially established based on the 3D-CT images of intact glenoids. Moreover, a clinically common anterior–posterior (AP) method was compared with the rh formula, to verify the technical superiority of rh formula.

Results

The regression analysis indicated a linear relationship between the width and height of intact glenoid: 2r = 0.768 × h − 1.222 mm (R² = 0.820, p < 0.001). An excellent reliability was found between the formula prediction and model width (ICC = 0.911, p = 0.266). An excellent agreement was found between the predicted values and model parameters (glenoid width, ICC_rh = 0.967, p_rh = 0.778; defect ratio, p_rh = 0.572, ICC_rh = 0.997). And, it is of higher accuracy compared to the AP method (glenoid width, ICC_AP = 0.933, p_AP = 0.001; defect ratio, ICC_AP = 0.911, p_AP = 0.033).

Conclusion

Applying the cadaver-based formula on 3D-CT scans accurately predicts native glenoid width and redefines bare spot for preoperatively determining glenoid bone loss.

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Title: A formula for instability-related bone loss: estimating glenoid width and redefining bare spot
Authors: Zhongkai Ren
Fengkun Wang
Xiaohong Huang
Jian Wang
Yingze Zhang
Tengbo Yu
Publication date: 02-02-2024
Publisher: Springer Berlin Heidelberg
Published in: International Orthopaedics / Issue 4/2024
Print ISSN: 0341-2695
Electronic ISSN: 1432-5195
DOI: https://doi.org/10.1007/s00264-024-06095-7

Keynote webinar | Spotlight on medication adherence

Springer Medicine

A formula for instability-related bone loss: estimating glenoid width and redefining bare spot

Abstract

Purpose

Methods

Results

Conclusion

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Purpose

Methods

Results

Conclusion

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