title: Biomechanics of reverse total shoulder arthroplasty.
abstract: Reverse total shoulder arthroplasty is an effective procedure for treatment of glenohumeral joint disease among patients with severe rotator cuff deficiency. Improvements in prosthetic design are the result of an evolved understanding of both shoulder and joint replacement biomechanics. Although modern generations of the reverse shoulder prosthesis vary in specific design details, they continue to adhere to Grammont's core principles demonstrated by his original Delta III prosthesis. This review article discusses the biomechanics of reverse total shoulder arthroplasty with a focus on elements of implant design and surgical technique that may affect stability, postoperative complications, and functional outcomes.
authors.affiliation: Department of Orthopaedic Surgery, University of California at San Francisco, San Francisco, CA, USA. Electronic address: berlinerj@orthosurg.ucsf.edu.
authors.forename: Jonathan L
authors.initials: JL
authors.lastname: Berliner
authors.affiliation: Department of Orthopaedic Surgery, University of California at San Francisco, San Francisco, CA, USA.
authors.forename: Ashton
authors.initials: A
authors.lastname: Regalado-Magdos
authors.affiliation: Department of Orthopaedic Surgery, University of California at San Francisco, San Francisco, CA, USA.
authors.forename: C Benjamin
authors.initials: CB
authors.lastname: Ma
authors.affiliation: Department of Orthopaedic Surgery, University of California at San Francisco, San Francisco, CA, USA.
authors.forename: Brian T
authors.initials: BT
authors.lastname: Feeley
mesh_terms: D019643:Arthroplasty, Replacement / Q000295:instrumentation / Q000379:methods*; D001696:Biomechanical Phenomena; D006801:Humans; D007595:Joint Prosthesis; D016059:Range of Motion, Articular; D017006:Rotator Cuff / Q000503:physiopathology / Q000601:surgery*; D000070636:Rotator Cuff Injuries; D012785:Shoulder Joint / Q000601:surgery*
keywords: Reverse total shoulder arthroplasty; biomechanics; functional outcomes; implant design; instability; scapular notching; surgical technique