The project will use Naitive’s flagship technology, OsteoSight™, to estimate the prevalence of low bone mineral density (BMD) in patients with an AP hip or pelvic X-ray who have undergone primary elective total hip arthroplasty (THA) or total knee arthroplasty (TKA) at Sah Orthopaedic Associates. The research study will also assess the proportion of patients with low BMD, as estimated by OsteoSight, who received cementless fixation. The analysis will provide a data-driven analysis of current fixation patterns among patients with a range of bone quality.
Low BMD is highly prevalent among patients undergoing joint replacement surgery1, yet preoperative bone health assessment remains rare, despite its significant impact on surgical outcomes. In primary elective THA and TKA, implant fixation method can influence complication rates, particularly in patients with poor bone health. In the US, uncemented fixation is the most common approach for primary elective THA and is growing in popularity for primary elective TKA. However, evidence suggests that patients with low BMD may benefit from cemented fixation, to reduce the risk of intraoperative and post operative periprosthetic fracture, implant loosening, and early revision.
OsteoSight, which received FDA 510(k) regulatory clearance in September 2025, opportunistically analyzes routine hip and pelvic X-rays in patients 50 years and older and identifies those cases at risk for low BMD. It can be embedded into routine orthopedic clinical workflows without changing existing imaging protocols.

Heraeus Medical LLC770 Township Line RoadYardley 19067United States