Cemented humeral shoulder arthroplasty: Because it works!

Abstract

Durable humeral component fixation in shoulder arthroplasty is important to prevent loosening. Humeral component designs include metaphyseal fitting, diaphyseal fitting with traditional stem length, short stem, and stemless designs. Stem geometry helps resist rotational and axial stress. Stem collars may prevent subsidence, and may be smooth for full cementation or textured proximally for bone ingrowth. Ideally, the humeral component has solid initial fixation, durable long-term fixation, minimizes humeral stress shielding, has low intra-operative complication rates, and can easily be revised. Excellent outcomes can be achieved, but there remain relative indications and contraindications for cementing or press-fitting the humeral component.