Bone Graft Substitute Provides Metaphyseal Fixation for a Stemless Humeral Implant.

摘要: Stemless humeral fixation has become an alternative to traditional total shoulder arthroplasty, but metaphyseal may be compromised by the quality of trabecular bone that diminishes with age and disease, augmentation desirable. The authors hypothesized a graft substitute (BGS) could achieve initial comparable polymethylmethacrylate (PMMA) cement. Fifteen fresh-frozen human male humerii were randomly implanted using stemless prosthesis, was augmented either high-viscosity PMMA cement (PMMA group) or magnesium-based injectable BGS (OsteoCrete; Bone Solutions Inc, Dallas, Texas) (OC group). Both groups compared control group no augmentation. Initial stiffness, failure load, displacement, cycle, work among groups. OC showed markedly higher loads, displacements, cycles than (P<.01). There statistically significant differences in between biomechanical properties favorably prostheses provide sufficient for this clinical application. Future will investigate long-term remodeling characteristics at prosthetic-bone interface vivo model evaluate efficacy approach.