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Study Design.

Cross-sectional study.

Objective.

The purpose of this study is to develop and validate a machine learning algorithm for the automated identification of anterior cervical discectomy and fusion (ACDF) plates from smartphone images of anterior-posterior (AP) cervical spine radiographs.

Summary of Background Data.

Identification of existing instrumentation is a critical step in planning revision surgery for ACDF. Machine learning algorithms that are known to be adept at image classification may be applied to the problem of ACDF plate identification.

Methods.

A total of 402 smartphone images containing 15 different types of ACDF plates were gathered. Two hundred seventy-five images (∼ 70%) were used to train and validate a convolution neural network (CNN) for classification of images from radiographs. One hundred twenty-seven (∼ 30%) images were held out to test algorithm performance.

Results.

The …