title: Augmented glenoid component for bone deficiency in shoulder arthroplasty.
abstract: Asymmetric posterior glenoid wear caused by degenerative glenohumeral arthritis can be addressed by several techniques during total shoulder arthroplasty. The purpose of this study was to evaluate the midterm outcome of a posterior augmented glenoid component to determine the clinical and radiographic outcome, including complications and the need for revision surgery. Between 1995 and 1999, 13 patients (14 shoulders) underwent a shoulder arthroplasty with an augmented glenoid component to treat posterior glenoid bone deficiency. All 14 shoulders had advanced osteoarthritis. The minimum followup for these 13 patients was 2 years (mean, 5 years; range, 2-8 years). The mean age of these patients was 66 years at the time of surgery (range, 52-78 years). The mean active elevation was 160 degrees (range, 120 degrees -180 degrees ) and external rotation was 56 degrees (range, 30 degrees -90 degrees ). According to a modified Neer result rating system, 36% of patients had an excellent result, 50% a satisfactory result, and 14% an unsatisfactory result. Our results suggest patients undergoing total shoulder arthroplasty with an asymmetric glenoid component for osteoarthritis achieve satisfactory mid-term pain relief and improvement in function; however, instability is not always corrected. The advantage of this component seems marginal, and its use has been discontinued.
authors.affiliation: Department of Orthopedic Surgery, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA.
authors.forename: Robert S
authors.initials: RS
authors.lastname: Rice
authors.forename: John W
authors.initials: JW
authors.lastname: Sperling
authors.forename: Joseph
authors.initials: J
authors.lastname: Miletti
authors.forename: Cathy
authors.initials: C
authors.lastname: Schleck
authors.forename: Robert H
authors.initials: RH
authors.lastname: Cofield
mesh_terms: D000368:Aged; D001168:Arthritis / Q000000981:diagnostic imaging / Q000473:pathology / Q000503:physiopathology / Q000601:surgery*; D019643:Arthroplasty, Replacement / Q000295:instrumentation*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007595:Joint Prosthesis; D008297:Male; D008875:Middle Aged; D017060:Patient Satisfaction; D011474:Prosthesis Design; D011859:Radiography; D016059:Range of Motion, Articular; D020127:Recovery of Function; D012086:Reoperation; D012189:Retrospective Studies; D012540:Scapula / Q000000981:diagnostic imaging / Q000473:pathology / Q000503:physiopathology / Q000601:surgery*; D012785:Shoulder Joint / Q000000981:diagnostic imaging / Q000473:pathology / Q000503:physiopathology / Q000601:surgery*; D013997:Time Factors; D016896:Treatment Outcome