HIGH RATE OF ANATOMIC REDUCTION AND HEALING OF TUBEROSITIES WITH A FRACTURE SPECIFIC CEMENTED STEM IN REVERSE TOTAL SHOULDER ARTHROPLASTY FOR PROXIMAL HUMERUS FRACTURE

ABSTRACT Hypothesis Using a modern stem designed for use in reverse total shoulder arthroplasty for fracture will enable accurate and effective tuberosity reduction and healing Methods Twenty-five (25) shoulders were included, with a minimum of 1 year of follow-up.  Radiographs and clinical outcome scores were reviewed. Results The average age of patients was 72.  The average postoperative ASES score was 83 +/- 8.  Average SANE scores were 82 +/- 15.  Modified Neer scores were able to be calculated on 23 patients, with 21 patients (91%) having excellent (14) or satisfactory (7) outcomes. Tuberosity reduction was “anatomic” in all shoulders. There was one case (4%) of shoulders that had tuberosities displaced into a “non-anatomic” position. Mild displacement of the tuberosities, and tuberosity resorption were common. No stems or glenoid components loosened or were considered “at risk”. Discussion With modern stem design emphasizing tuberosity reduction and fixation, and modern repair constructs, tuberosity reduction and healing are reliable.  Clinical outcomes are excellent, with 91% having excellent or satisfactory clinical outcomes. Level of Evidence Level IV; Treatment Study