Patent ID: 8414648

Claim:
A method for trans-iliac lumbar fusion comprising creating an insertion path from an anterolateral region of a lumbar vertebra L 5 , in a caudal direction through the intervertebral disc into and through an opposite anterolateral interior region of a sacral vertebra S 1 , through the sacro-iliac joint, and terminating in the ilium, providing a bone fixation implant comprises an elongated implant structure having a rectilinear cross section including an exterior surface region treated to provide bony in-growth or through-growth along the implant structure, and inserting the bone fixation implant through the insertion path from the anterolateral region of a lumbar vertebra L 5 , in a caudal direction through the intervertebral disc into and through the opposite anterolateral interior region of a sacral vertebra S 1 , through the sacro-iliac joint, and terminating in the ilium.