Freeze Dried Proximal Femoral Allografts in Revision of Femoral Stems

A Novel Endosteal Reconstruction of the Femur from Distal Femoral Remnant Using 3D-Printed Titanium Rings

“…Total femur replacement is an alternative but is associated with poor knee function and increased morbidity, with reported infection rates ranging from 4% to 44%, dislocation rates of 6% to 36%, and inconsistent survivorship at midterm follow-up [2][3][4][5][6] ; therefore, it is not recommended for young and high demand patients. Freeze-dried APC showed acceptable results for massive reconstruction of femoral deficiency in younger patients at average follow-up of 7 to 8.1 years 9,10 .…”

“…Total femur replacement is relatively straightforward and less time-consuming but is associated with a high frequency of complications [2][3][4][5][6] . APC has the merits of restoring femoral bone stock, adjusting leg length discrepancy, and providing attachments for the abductor complex despite the risk of complications, including allograft nonunion, absorption, fracture, infection, and disease transmission [7][8][9][10] . Although custom porous tantalum implants [11][12][13] and threedimensional (3D)-printed titanium sleeve and plate 14 have been used in limb salvage surgery dealing with massive proximal femoral defect, hybrid fixation enhanced by endosteal reconstruction with 3D-printed porous titanium rings has not been described.…”