I've never removed/repaird one since a relatively uncommon finding to begin with, then would have to have pathology, and then unresponsive to conservative care and so on. Mostly a literature/academic problem, but I'll bump for you in case someone here has actually had an issue with a Quartus and had surgery.

edit: just wanted to let you know I love your screen name!

---

____________________________________
Fatigue is biochemical, not biomechanical.
- Andrew Coggan, PhD