title: Early results after modular non-cemented reverse total shoulder arthroplasty: a prospective single-centre study of 38 consecutive cases.
abstract: BACKGROUND
  This study evaluated the outcome of a third generation modular non-cemented reverse total shoulder arthroplasty (RTSA) in incongruent glenohumeral degeneration with severe rotator cuff deficiency.
  
  
  METHODS
  Thirty-eight consecutive RTSA with a mean age of 72 years (range 58-89 years) were prospectively enrolled. Mean follow-up was 24 months (range 21-29 months). Pain and standardized clinical functional scores were monitored. Radiographic and MRI findings have been scored and correlated to clinical outcome and complication rate.
  
  
  RESULTS
  Preoperative pain decreased significantly from VAS 8 to 2 at 24 months postop., as ROM improved significantly, by at least doubling preoperative values of elevation, abduction, and external rotation. Nevertheless, internal rotation languished. The preoperative median constant was 18 points and 70 points 24 months postop. (p < 0.001). Initial median DASH was 95 vs. 50 2 years after surgery (p < 0.001). Median prospective ASES was 23 (IQR 8-33) vs. 70 points (p < 0.001) at final follow-up. Each outcome measurement improved significantly at 6, 12, and 24 months follow-up. There was no significant correlation between pre-operative radiographic findings of osseous and/or soft-tissue degeneration and short-term clinical outcome and/or complication rate (13 %). At final follow-up, 54 % showed radiographic signs of inferior scapular notching. There was no revision and/or loosening observed.
  
  
  CONCLUSIONS
  RSTA with this modular system results in significant pain relief and improvement of functional clinical outcomes. However, longevity of the device is currently unknown.
authors.affiliation: Department for Orthopaedic Sports Medicine, Klinikum rechts der Isar, Technische Universität München, Ismaninger Strasse 22, 81675, Munich, Germany.|Berufsgenossenschaftliche Unfallklinik Murnau, Murnau, Germany.
authors.forename: Tim
authors.initials: T
authors.lastname: Saier
authors.affiliation: Department for Orthopaedic Sports Medicine, Klinikum rechts der Isar, Technische Universität München, Ismaninger Strasse 22, 81675, Munich, Germany.
authors.forename: Matthias
authors.initials: M
authors.lastname: Cotic
authors.affiliation: Department for Orthopaedic Sports Medicine, Klinikum rechts der Isar, Technische Universität München, Ismaninger Strasse 22, 81675, Munich, Germany.|Department of Trauma Surgery, Klinikum rechts der Isar, Technische Universität München, Munich, Germany.
authors.forename: Chlodwig
authors.initials: C
authors.lastname: Kirchhoff
authors.affiliation: Department for Orthopaedic Sports Medicine, Klinikum rechts der Isar, Technische Universität München, Ismaninger Strasse 22, 81675, Munich, Germany.|Department of Orthopaedic and Trauma Surgery, University Medical Center, Albert-Ludwigs Universität Freiburg, Freiburg, Germany.
authors.forename: Matthias J
authors.initials: MJ
authors.lastname: Feucht
authors.affiliation: Department for Orthopaedic Sports Medicine, Klinikum rechts der Isar, Technische Universität München, Ismaninger Strasse 22, 81675, Munich, Germany.|BGU Frankfurt, Frankfurt, Germany.
authors.forename: Philipp
authors.initials: P
authors.lastname: Minzlaff
authors.affiliation: Department for Orthopaedic Sports Medicine, Klinikum rechts der Isar, Technische Universität München, Ismaninger Strasse 22, 81675, Munich, Germany.|Schulthess Clinic, Zurich, Switzerland.
authors.forename: Michael C
authors.initials: MC
authors.lastname: Glanzmann
authors.affiliation: Department for Orthopaedic Sports Medicine, Klinikum rechts der Isar, Technische Universität München, Ismaninger Strasse 22, 81675, Munich, Germany.|Isar Ortho Zentrum, Munich, Germany.
authors.forename: Philip
authors.initials: P
authors.lastname: Schöttle
authors.affiliation: Department for Orthopaedic Sports Medicine, Klinikum rechts der Isar, Technische Universität München, Ismaninger Strasse 22, 81675, Munich, Germany.
authors.forename: Andreas B
authors.initials: AB
authors.lastname: Imhoff
mesh_terms: D000203:Activities of Daily Living; D000368:Aged; D000369:Aged, 80 and over; D019643:Arthroplasty, Replacement / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D010003:Osteoarthritis / Q000601:surgery*; D011446:Prospective Studies; D016059:Range of Motion, Articular; D012086:Reoperation; D017006:Rotator Cuff / Q000601:surgery; D012785:Shoulder Joint / Q000503:physiopathology / Q000601:surgery*; D016896:Treatment Outcome