Hip international : the journal of clinical and experimental research on hip pathology and therapy
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The present study aimed to evaluate periprosthetic bone mineral density (BMD) changes around a cementless short tapered-wedge stem used for total hip arthroplasty (THA) and to determine the correlation between BMD changes and stem alignment after THA. ⋯ We demonstrated that periprosthetic BMD was well maintained in the proximal femur after THA with a short tapered-wedge stem and that stem anteversion affects periprosthetic BMD after THA.
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Comparative Study
Risk of stem undersizing with direct anterior approach for total hip arthroplasty.
The direct anterior approach (DAA) for total hip arthroplasty (THA) is claimed to be as effective but less invasive than the conventional posterior approach (PA). However, the higher risk of femoral fracture and soft tissue damage cannot be underestimated. The present authors believe that the difficult femoral exposure and the surgeon's knowledge of possible complications related to femoral preparation may result in a higher rate of undersized stems when compared to PA, even when a short femoral component is employed to minimise these risks. ⋯ The technical difficulty of femoral preparation and the surgeon's knowledge of possible related complications might lead to implant undersized stems more frequently through DAA than through PA, especially if intraoperative imaging controls are not used.