Porous metals and alternate bearing surfaces in shoulder arthroplasty

Current Reviews in Musculoskeletal Medicine
Shannon R CarpenterAnand M Murthi

Abstract

Total shoulder arthroplasty (TSA) provides an effective solution for the treatment of glenohumeral arthritis. However, long-term outcomes have been limited by glenoid component aseptic loosening and polyethylene (PE) wear. Previous attempts to improve glenoid fixation with metal-backed glenoids resulted in inferior results. Newer component designs that contain porous metal allow for biological ingrowth of the prosthesis, potentially improving longevity and overall outcomes. Porous metal can also improve humeral component fixation, obviating the need for cement and simplifying revision surgery. Advances such as highly cross-linked polyethylene (HXLPE), vitamin E-doped HXLPE, and alternate bearing surfaces like ceramics and pyrolytic carbon have proven to provide superior wear characteristics in other joint replacements and may prove beneficial in the shoulder as well.

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Citations

Mar 10, 2020·Current Reviews in Musculoskeletal Medicine·Harshvardhan Chawla, Seth Gamradt
Dec 21, 2019·The Journal of the American Academy of Orthopaedic Surgeons·Eugene W BrabstonBrent A Ponce
Mar 24, 2021·Orthopaedics & Traumatology, Surgery & Research : OTSR·Stefanos TsitlakidisBoris Sowa

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