A spacer block for gathering data to be used in selection of a trial insert includes a first body piece, a second body piece positioned on top of the first body piece, and at least one chim positioned on top of the second body piece. The first body piece includes at least one sensor to measure forces between the first and second body pieces, and the spacer block includes a processor having a memory operatively coupled to the sensor. The data can be analyzed using a trained neural network to provide feedback to a physician to aid in the determination of whether to resect additional bone, release soft tissues, and/or select sizes for a trial insert. Advantageously, increased data may be provided to a physician without the need to acquire numerous samples from a patient, and fewer sensors may be employed.
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