Estimating tibial nail length using forearm referencing

Carlo R. Belen

Publication Date

2014

Document Type

Research

Abstract

The objective of the study is to determine the effectiveness of forearm referencing as a predictor of tibial length. The study generated a total of 100 volunteers, with equal ratio of male and female, aged 20-69 years old. Scatter plot of our data revealed a linear relationship between measurement 1 and measurement 2. The Bland-Altman plot clearly demonstrates that measurement 1 tend to give values that are higher than measurement 2. With standard deviation of the differences of 6.56 mm, perhaps measurement 1 could be of practical use provided a small downward adjustment was applied to the measurement. Since the could be of practical use provided a small downward adjustment was applied to the measurement. Since the two techniques are not absolutely comparable, a linear regression analysis was performed to formulate a regression equation.

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