Accuracy of obtaining optimal base plate declination in reverse shoulder arthroplasty

Journal of Shoulder and Elbow Surgery
Andrew D BriesRichard J Hawkins

Abstract

Reverse total shoulder arthroplasty has shown promising early and midterm results; however, complication rates remain a concern. Glenoid loosening and notching, for example, can be deleterious to the long-term success. A 15° inferior inclination angle has been shown to offer the most uniform compressive forces across the base plate and the least micromotion at the base plate-glenoid interface. The inferior inclination angle may also avoid scapular notching. The purpose of this study was to determine the accuracy of obtaining 15° of inferior inclination of the base plate. The radiographs of 138 reverse total shoulder patients were included. Overall, glenoid inclination and change in inclination from preoperative radiographs were measured using a previously described standardized method. Measurements were obtained by 2 orthopedic surgeons, who repeated all measurements 3 weeks apart. The final angle and change in inclination were averaged. Seventy-two patients had pre- and postoperative radiographs of sufficient quality to accurately measure inclination. Average pre- and postoperative inclination measured -4.8° (-27.2° to 28.1°) and -13.3° (-22.8° to 43.6°), respectively. The average change in inclination was -8.5° (-53.7(o) to 3...Continue Reading

References

Aug 1, 2006·The Journal of Bone and Joint Surgery. British Volume·U KandemirP J McMahon
Sep 23, 2006·Journal of Shoulder and Elbow Surgery·Sergio GutiérrezWilliam E Lee
Mar 3, 2007·The Journal of Bone and Joint Surgery. American Volume·Ryan W SimovitchChristian Gerber
Mar 13, 2009·Journal of Shoulder and Elbow Surgery·Jason O HolcombMark A Frankle
Mar 9, 2011·Clinical Orthopaedics and Related Research·Luc FavardDaniel Mole
Mar 15, 2011·Journal of Shoulder and Elbow Surgery·Laurence B KemptonJ Michael Wiater

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Citations

Sep 16, 2014·Journal of Shoulder and Elbow Surgery·Lior Laver, Grant E Garrigues
May 15, 2013·Journal of Shoulder and Elbow Surgery·Christopher P RocheMatthew J Dipaola
Jul 6, 2013·The Orthopedic Clinics of North America·Claudius D JarrettChristopher C Schmidt
Aug 3, 2013·The International Journal of Medical Robotics + Computer Assisted Surgery : MRCAS·Timo StübigRupert Meller
Feb 2, 2021·The Bone & Joint Journal·Kuhan A MahendrarajAndrew Jawa
May 9, 2021·Journal of Shoulder and Elbow Surgery·Alexander OttoAugustus D Mazzocca

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