Hip international : the journal of clinical and experimental research on hip pathology and therapy
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Large acetabular defects can be reconstructed using a tantalum Trabecular Metal acetabular component with Trabecular Metal buttress augments. We asked if these reconstructions survived at short-term follow-up. Of 35 patients undergoing acetabular reconstruction with a Trabecular Metal acetabular revision system from 2006, 19 acetabular revisions associated with major bone loss in which we reconstructed the acetabulum with buttress tantalum augments or cup-cage construct combined with a Trabecular Metal shell, were available for evaluation. ⋯ Radiographic assessment showed an improvement in the position of the rotation centre of the hip, from a vertical position a mean of 3.5 cm (range 1.6-5.5 cm), to 1.4 cm (range 0.5-2.7 cm) postoperatively. The centre of the femoral head was relocated from a mean of 1.4 cm (range, -3 to 2.6 cm) lateral from the vertical at the teardrop to 3 cm (range 0.2-4 cm). Our early results suggest that buttress tantalum augments, with cup-cage construct for severe bone defects, may be an alternative to other treatment options, but a longer follow-up is necessary.
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The role of uncemented fully hydroxyapatite coated hemiarthroplasties for the treatment of displaced femoral neck fractures remains unclear. We investigated if complications, reoperations and mortality differed from that of cemented hemiarthroplasties. The study groups consisted of 78 cemented and 97 uncemented, hydroxyapatite coated hemiarthroplasties with minimum 1 year follow-up. ⋯ Mortality rates did not differ statistically significant between groups. Outcomes were comparable. Introduction of an uncemented hydroxyapatite coated hemiarthroplasty for treatment of displaced femoral neck fractures can be recommended.