Disclosed herein is a method of creating a customized arthroplasty jig. The method may include: generating two-dimensional MRI images of a patient's joint area to undergo arthroplasty； electronically orienting the two dimensional MRI image slices to account for the patient's joint area being randomly physically oriented in a scanning area of a MRI machine； generating a three-dimensional bone image of at least a portion of a bone of the patient's joint area from the generated two-dimensional MRI images； using the three-dimensional bone image to generate data pertaining to the customized arthroplasty jig, wherein the data includes bone surface information； providing the data to at least one manufacturing device； and employing the bone surface information to cause the at least one manufacturing device to create a surface on the arthroplasty jig configured to matingly receive a surface of the bone.
