Factors Influencing Appropriate Implant Selection and Position in Reverse Total Shoulder Arthroplasty

Orthop Clin North Am. 2021 Apr;52(2):157-166. doi: 10.1016/j.ocl.2020.12.006. Epub 2021 Feb 10.


Reverse shoulder arthroplasty has increased in popularity and has provided improved but somewhat variable results. These variable outcomes may be related to many factors, including implant design, component positioning, specific indication, and patient anatomy. The original Grammont design provided a solution to the high failure rate at the time but was found to have a high rate of scapular notching and poor restoration of rotation. Modern lateralized designs are more consistent in reducing scapular notching while improving range of motion, especially in regards to external rotation. This review article summarizes the effects of modern reverse shoulder prostheses on outcomes.

Keywords: Glenoid version; Grammont; Lateralization; Neck-shaft angle; Onlay versus inlay; Reverse design; Reverse shoulder arthroplasty.

Publication types

  • Review

MeSH terms

  • Arthroplasty, Replacement, Shoulder / instrumentation*
  • Arthroplasty, Replacement, Shoulder / methods
  • Humans
  • Joint Prosthesis*
  • Prosthesis Design*
  • Prosthesis Fitting*