title: Reverse total shoulder arthroplasty with structural bone grafting of large glenoid defects.
abstract: BACKGROUND
  Large glenoid defects pose difficulties in shoulder arthroplasty. Structural grafts consisting of a humeral head autograft, iliac crest, and allograft have been described. Few series describe grafts used with reverse total shoulder arthroplasty (RTSA).
  
  
  METHODS
  We retrospectively reviewed patients who had undergone primary or revision RTSA. We identified 44 patients (20 men and 24 women; mean age, 69 years) as having a bulk structural graft to the glenoid behind the baseplate. The grafts consisted of a humeral head autograft in 29, iliac crest autograft in 1, or femoral head allograft in 14. Range of motion data, American Shoulder and Elbow Surgeons score, simple shoulder test, shoulder pain and disability index, and Constant scores were obtained from preoperative and the latest follow-up visits. Radiographs were reviewed from the initial postoperative visit and the latest follow-up. The grafting cohort was compared with an age- and sex-matched cohort of RTSA patients without glenoid grafting.
  
  
  RESULTS
  Improvements were seen in the functional outcome scores at the latest follow-up. No significant differences were found in the preoperative or postoperative data between allografts and autografts. Postoperative scores for the bone graft cohort were significantly lower than those in the cohort without grafting. Complete or partial incorporation was shown radiographically in 81% of grafts. Six baseplates were considered loose. Complications included 2 infections, 1 dislocation, 1 humeral loosening, and 2 instances of clinical aseptic baseplate loosening. Six patients showed mild scapular notching.
  
  
  CONCLUSIONS
  The use of bulk structural grafts is a promising treatment option. Allografts may yield equally acceptable results compared with autografts.
authors.affiliation: Southeastern Sports Medicine, Asheville, NC, USA. Electronic address: sportdocrbj@aol.com.
authors.forename: Richard B
authors.initials: RB
authors.lastname: Jones
authors.affiliation: Orthopaedics and Sports Medicine Institute, University of Florida, Gainesville, FL, USA.
authors.forename: Thomas W
authors.initials: TW
authors.lastname: Wright
authors.affiliation: Department of Orthopaedic Surgery, NYU Langone Medical Center, New York, NY, USA.
authors.forename: Joseph D
authors.initials: JD
authors.lastname: Zuckerman
mesh_terms: D000368:Aged; D064591:Allografts; D000072228:Arthroplasty, Replacement, Shoulder; D064592:Autografts; D005260:Female; D005270:Femur Head / Q000637:transplantation*; D005500:Follow-Up Studies; D006801:Humans; D058430:Humeral Head / Q000637:transplantation*; D007085:Ilium / Q000637:transplantation*; D008297:Male; D011183:Postoperative Complications; D012042:Registries; D012189:Retrospective Studies
keywords: Bulk structural grafts; allograft; autograft; glenoid defects; glenoid grafting; reverse total shoulder arthroplasty