title: [Complications in reverse shoulder arthroplasty - causes,                     prevention and treatment options].
abstract: After introduction of the reverse shoulder prosthesis in the 1970 s, clinical                         outcome was poor. This was mostly caused by the constraint design and the                         lateralised centre of rotation, which caused shear forces and glenoid                         failure. In the 1980 s the centre of rotation was medialised and caudalised,                         a larger glenosphere and a neck/shaft angle of 155° were used. The clinical                         outcome data became better and the reverse shoulder prosthesis established                         as a treatment option. Initially used for symptomatic glenohumeral arthritis                         in combination with severe rotator cuff pathologies, the indications have                         been expanded. In spite of its great popularity, the reverse shoulder                         prosthesis is associated with higher complication rates than anatomic                         shoulder arthroplasties. Typical complications include scapular notching,                         baseplate failure, periprosthetic fractures, scapular fractures, infections,                         haematoma, instability and nerve leasions. Only few publications provide                         prevention or treatment strategies.
authors: Uk für Unfallchirurgie und Sporttraumatologie, Universitätsklinik der Paracelsus Universität Salzburg, Österreich. r.ortmaier@gmail.com
authors: R H
authors: RH
authors: Ortmaier
authors: N
authors: N
authors: Matis
authors: M
authors: M
authors: Tauber
authors: M
authors: M
authors: Blocher
authors: R
authors: R
authors: Bogner
authors: H
authors: H
authors: Resch
mesh_terms: D001168:Arthritis / Q000209:etiology* / Q000517:prevention & control*; D001178:Arthroplasty / Q000009:adverse effects* / Q000379:methods; D006801:Humans; D007593:Joint Instability / Q000209:etiology* / Q000517:prevention & control*; D007595:Joint Prosthesis / Q000009:adverse effects*; D012785:Shoulder Joint / Q000601:surgery*