7. The spinal fixation system of claim 6 , further comprising a second subassembly configured to engage a portion of at least one of the first and second plates of the second clamp to move one of the first and second plates of the second clamp towards the other plate to clamp the spinal rod within the receiving portion of the second clamp.
7. The spinal fixation system of claim 6 , further comprising a second subassembly configured to engage a portion of at least one of the first and second plates of the second clamp to move one of the first and second plates of the second clamp towards the other plate to clamp the spinal rod within the receiving portion of the second clamp. 8. The spinal fixation system of claim 7 , wherein the second subassembly is configured to securely fasten both the clamp to the bone anchor and the spinal rod to the clamp.