DXA evaluation of femoral bone mineral density and cortical width in patients with prior total knee arthroplasty.
T BlatyD KruegerR IllgenM SquireB HeiderscheitNeil C BinkleyP AndersonPublished in: Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA (2018)
Distal femur BMD can be reproducibly measured using DXA and is ~ 10% lower on the TKA leg. Similarly, medial and lateral cortices are thinner at the 25% ROI. These bone changes likely increase periprosthetic fracture risk. Further work to define and mitigate periprosthetic fracture risk after TKA is needed.