The Lacey Rotating-Hinge (Wright Medical, Arlington, TN) total knee is
a constrained device for reconstruction of knees without collateral l
igaments or to replace resected bone. Problems have been described wit
h hinged total knees such as stem fracture, particulate synovitis, and
stem loosening. A different mode of failure is described here. Two ca
se histories are provided in which similar fractures occurred in the l
ateral condyle of Lacey Rotating-Hinge total knees.