Publications by authors named "M J Bercik"

Article Synopsis
  • Reverse shoulder arthroplasty is used to treat conditions like cuff tear arthropathy and irreparable rotator cuff tears, and advances in design allow for improved correction of glenoid retroversion and inclination with augmented baseplates.
  • The study involved analyzing CT scans from 21 patients and comparing the effects of standard and augmented baseplates when adjusting the glenoid inclination to neutral, with surgeons virtually placing both types to ensure consistency.
  • Results showed that while the area of baseplate contact was similar between both types, patients with augmented baseplates experienced significantly less bone loss during surgery (619 mm vs. 1102 mm reamed), indicating a potential advantage of the augmented design.
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The purpose of this study was to compare the short-term clinical and radiographic outcomes of a lateralized glenoid construct with either a central screw or post. A multicenter retrospective study was conducted of reverse shoulder arthroplasties (RSAs) with minimum 2-year clinical followup. All RSAs implanted had a 135° neck shaft angle (NSA) and a modular circular baseplate.

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Backgroud: The 155° Grammont reverse shoulder replacement has a long track record of success, but also a high radiographic notching rate. The increased distance between the scapular pillar and the humeral component theoretically decreases postoperative notching. The glenoid component can be shifted inferiorly relative to the glenoid; however, there also is some concern that shifting the glenoid component too far inferiorly (inferior glenoid component overhang > 3.

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Background: Recent studies have shown variations in glenoid bone density in asymmetric wear patterns but have yet to analyze non-arthritic or concentrically worn glenoids.

Questions/purposes: The purpose of this study is to characterize and compare subchondral glenoid bone densities in both non-arthritic and A1, A2, B1, B2 and B3 osteoarthritic glenoids, as well as to assess uniformity in symmetric and asymmetric erosion wear patterns.

Methods: In all, 150 computerized tomography (CT) scans containing equal numbers of non-arthritic (N), A1, A2, B1, B2 and B3 glenoids were segmented semi-automatically.

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Background: Axillary radiographs traditionally have been considered sufficient to identify concentric glenoid wear in osteoarthritic shoulders; however, with variable glenoid wear patterns, assessment with use of computed tomography (CT) has been recommended. The purpose of the present study was to compare the use of axillary radiographs and mid-glenoid axial CT scans to identify glenoid wear.

Methods: Preoperative axillary radiographs and mid-glenoid axial CT scans for 330 patients who underwent anatomic total shoulder arthroplasty were reviewed.

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