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

Autor: Ren Z; Department of Sports Medicine, Affiliated Hospital of Qingdao University, Qingdao, Shandong, China., Wang F; School of Medicine, Nankai University, Tianjing, China., Huang X; Medical Research Center, Shandong Institute of Traumatic Orthopedics, The Affiliated Hospital of Qingdao University, Qingdao, China., Wang J; Department of Hand and Foot Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China., Zhang Y; Department of Orthopedics, The Third Hospital of Hebei Medical University, Shijiazhuang, China. dryzzhang@126.com.; Department of Orthopedics, The Affiliated Hospital of Qingdao University, Qingdao, China. dryzzhang@126.com., Yu T; Department of Orthopedic Surgery, University of Health and Rehabilitation Sciences (Qingdao Municipal Hospital), Qingdao HospitalQingdao, China. Yutengbo.dr@hotmail.com.; Institute of Sports Medicine and Health, Qingdao University, Qingdao, China. Yutengbo.dr@hotmail.com.
Jazyk: angličtina
Zdroj: International orthopaedics [Int Orthop] 2024 Apr; Vol. 48 (4), pp. 1057-1063. Date of Electronic Publication: 2024 Feb 02.
DOI: 10.1007/s00264-024-06095-7
Abstrakt: 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 (R 2  = 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.
(© 2024. The Author(s).)
Databáze: MEDLINE
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