BACKGROUND: Scapular notching is a well-recognized complication of reverse total shoulder arthroplasty (RTSA). This paper analyzes the effects of prosthesis design on scapular notching in RTSA. METHODS: From a database of all RTSA performed by the senior author, shoulders with minimum 12-month follow-up were included (65 shoulders). Notching in shoulders with a prosthesis neck-shaft angle of 155° and no center-of-rotation (COR) offset (group 1) was compared to notching in shoulders with a neck-shaft angle of 143° and 2.5-mm COR offset (group 2). P values less than .05 were considered significant. RESULTS: The notching grade was significantly higher in group 1 than in group 2, even after statistically adjusting for differences in length of follow-up (P = .0081). The incidence of notching in group 1 at 60.7% was significantly higher than the 16.2% incidence in group 2 (P = .0107). CONCLUSION: Using prostheses with a smaller neck-shaft angle and increased COR offset can significantly reduce scapular notching in RTSA at 1 year, possibly improving prosthesis survival.
BACKGROUND: Scapular notching is a well-recognized complication of reverse total shoulder arthroplasty (RTSA). This paper analyzes the effects of prosthesis design on scapular notching in RTSA. METHODS: From a database of all RTSA performed by the senior author, shoulders with minimum 12-month follow-up were included (65 shoulders). Notching in shoulders with a prosthesis neck-shaft angle of 155° and no center-of-rotation (COR) offset (group 1) was compared to notching in shoulders with a neck-shaft angle of 143° and 2.5-mm COR offset (group 2). P values less than .05 were considered significant. RESULTS: The notching grade was significantly higher in group 1 than in group 2, even after statistically adjusting for differences in length of follow-up (P = .0081). The incidence of notching in group 1 at 60.7% was significantly higher than the 16.2% incidence in group 2 (P = .0107). CONCLUSION: Using prostheses with a smaller neck-shaft angle and increased COR offset can significantly reduce scapular notching in RTSA at 1 year, possibly improving prosthesis survival.
Authors: William A Blessing; Stephen M Okajima; M Belen Cubria; Juan C Villa-Camacho; Miguel Perez-Viloria; Patrick M Williamson; Angie N Sabogal; Sebastian Suarez; Lay-Hong Ang; Suzanne White; Evelyn Flynn; Edward K Rodriguez; Mark W Grinstaff; Ara Nazarian Journal: Proc Natl Acad Sci U S A Date: 2019-06-03 Impact factor: 11.205
Authors: Brett P Wiater; Denise M Koueiter; Tristan Maerz; James E Moravek; Samuel Yonan; David R Marcantonio; J Michael Wiater Journal: Clin Orthop Relat Res Date: 2014-11-12 Impact factor: 4.176
Authors: E Boyer; G Menu; F Loisel; R Saadnia; J Uhring; A Adam; S Rochet; P Clappaz; E Baudouin; T Lascar; R Cermeno; L Obert Journal: Eur J Orthop Surg Traumatol Date: 2017-02-25
Authors: Chad M Fortun; Jonathan J Streit; Steven A Horton; Stephanie J Muh; Robert J Gillespie; Reuben Gobezie Journal: Int J Shoulder Surg Date: 2015 Apr-Jun
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