Prediction of Recurrent Anterior Shoulder Instability Using the On/Off Track Method and 3D MRI: A Clinical Outcomes and Cost-Effectiveness Study
Brief description of study
To improve the preoperative evaluation of bipolar bone loss, we will develop and optimize a new imaging strategy that consists of a new shoulder imaging technique, 3D MRI, and imaging measurement tool, the On/Off Track method, which can be easily implemented into clinical practice. The On/Off Track method is a technique that uses simple measurements of bipolar bone loss to assess the potential for interaction between these osseous injuries to predict recurrent ASI. Bipolar bone loss will be characterized on MRI with 3D models using the On/Off Track method in ASI patients (n=200). Individual bone injuries will also be quantified using prior proposed measurements (glenoid bone loss %; Hill-Sachs diameter involvement) and thresholds. Patients will be followed for 2 years post-surgery. We will also determine the most cost-effective pre-treatment imaging strategy for patients with a history of ASI. A Markov model using data from our findings and the scientific literature will elucidate the cost-effectiveness tradeoffs between our new MRI-based strategy and current imaging-based algorithms to evaluate bipolar bone loss. We hypothesize that our MRI strategy will be more cost effective than current imaging strategies that rely on individual bone injuries.
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