from The Century Dictionary.
- noun Traction through an axis; specifically, in obstetrics, traction made with the forceps along a curved line corresponding to the axis of the pelvis.
Sorry, no etymologies found.
If the tack has not been _in situ_ more than a few weeks the stenosis at the level of the darts is simply edematous mucosa and the tack can be pulled through with no more than slight mucosal trauma, _provided_ axis-traction only be used.
The stenotic tissue in cases of a few months 'sojourn maybe composed of granulations, in which case axis-traction will safely withdraw it.
But if the bronchoscopist swings the patient's head far to the opposite side and makes axis-traction, as shown at C, the head of the tack can be drawn through the swollen mucosa without anchoring itself in a cartilage.