Patient Specific Instrumentation in Shoulder Arthroplasty

Abstract

Originally developed for total knee arthroplasty (TKA), patient-specific instrumentation (PSI) is a validated computer-assisted technique in shoulder arthroplasty involving the use of customized three dimensional (3D)-printed drill guides derived from preoperative planning software to assist in accurate position of components, particularly of the glenoid component. PSI has been shown to improve glenoid component positioning, leading to less outliers by maintaining accuracy while reducing variability. As technology continues to evolve, integrating PSI with other innovations such as computer navigation, robotics, and mixed reality holds the promise of even greater advancements in shoulder arthroplasty. Here we detail the patient indications, surgical technique, and patient outcomes following the use of PSI for shoulder arthroplasty.