title: Unscrewing instability of modular reverse shoulder prosthesis increases propensity for in vivo fracture: a report of two cases.
authors.affiliation: University of California, Berkeley, Berkeley, CA, USA. Electronic address: fansari@berkeley.edu.
authors.forename: Farzana
authors.initials: F
authors.lastname: Ansari
authors.affiliation: University of California, Berkeley, Berkeley, CA, USA.
authors.forename: Carol
authors.initials: C
authors.lastname: Major
authors.affiliation: San Francisco Shoulder, Elbow & Hand Clinic, San Francisco, CA, USA.
authors.forename: Tom R
authors.initials: TR
authors.lastname: Norris
authors.affiliation: Department of Orthopedic Surgery, Martha Jefferson Hospital, Charlottesville, VA, USA.
authors.forename: Stephen B
authors.initials: SB
authors.lastname: Gunther
authors.affiliation: Department of Orthopaedic Surgery, University of California, San Francisco, San Francisco, CA, USA.
authors.forename: Michael
authors.initials: M
authors.lastname: Ries
authors.affiliation: University of California, Berkeley, Berkeley, CA, USA.
authors.forename: Lisa
authors.initials: L
authors.lastname: Pruitt
mesh_terms: D000368:Aged; D001172:Arthritis, Rheumatoid / Q000150:complications / Q000601:surgery; D019643:Arthroplasty, Replacement / Q000009:adverse effects*; D001862:Bone Resorption / Q000150:complications; D020878:Device Removal; D019544:Equipment Failure Analysis; D005593:Fracture Fixation, Internal; D006801:Humans; D007595:Joint Prosthesis / Q000009:adverse effects*; D008297:Male; D008875:Middle Aged; D011475:Prosthesis Failure / Q000209:etiology; D012086:Reoperation; D017006:Rotator Cuff / Q000601:surgery; D000070636:Rotator Cuff Injuries; D012784:Shoulder Fractures / Q000601:surgery; D012785:Shoulder Joint / Q000601:surgery*; D013708:Tendon Injuries / Q000209:etiology / Q000601:surgery