Purpose
To evaluate whether characteristics such as age, height, weight, sex, or body mass
index affected the distal tibial dimensions and radius of curvature (ROC) of a potential
donor for anterior glenoid augmentation.
Methods
A retrospective review of magnetic resonance imaging of ankles without bony trauma
was performed, and the anteroposterior (AP) and medial-lateral (ML) distances and
ROC of the tibial plafond articular surface were measured. Demographic characteristics,
including age, sex, height, weight, and body mass index, were recorded.
Results
A total of 141 imaging studies were included (73 men and 68 women; average age, 38.2
± 12.65 years). All potential specimens accommodated harvest of a 10 × 22–mm distal
tibial allograft bone block. Men had greater ML (42.74 cm [95% confidence interval
(CI), 42.09-43.39 cm] vs 38.01 cm [95% CI, 37.30-38.72 cm]; P < .001) and AP (38.16 cm [95% CI, 37.47-38.85 cm] vs 34.57 cm [95% CI, 33.97-35.17 cm];
P < .001) dimensions. Significant moderately positive correlations were found for AP
dimensions with height (r = 0.584, P < .001) and weight (r = 0.383, P < .001) and for ML dimensions with height (r = 0.711, P < .001) and weight (r = 0.467, P < .001). ROC was positively correlated with height (r = 0.509, P < .001) and weight (r = 0.294, P < .001). Patient age was not related to either the AP or ML distal tibial dimensions
or ROC.
Conclusions
After magnetic resonance imaging analysis, all potential donors permitted harvest
of a standard-sized distal tibial allograft irrespective of sex or common anthropometric
measures, and 85.8% showed distal tibial morphology acceptable for glenoid augmentation.
AP and ML graft dimensions and ROC correlated significantly with height and weight.
Level of Evidence
Level II, diagnostic study.
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Article info
Publication history
Published online: September 13, 2019
Accepted:
May 7,
2019
Received:
October 31,
2018
Footnotes
The authors report the following potential conflicts of interest or sources of funding: S.A.P. is a consultant for Arthrex. M.T.P. receives royalties from Arthrex and is a consultant for Arthrex and Joint Research Foundation. Full ICMJE author disclosure forms are available for this article online, as supplementary material.
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© 2019 by the Arthroscopy Association of North America
