You're welcome. I'm a musician who happens to have a day job as a rehab counselor. I do a lot of work with physicians, orthopedic specilaists, physical therapist and occupational therapist. As a result, I know just enough about orthopedics to make me dangerous. I think you'll get that "cracking" under control. If you have specific questions, let me know, and I'll ask a specialist about it. Keep on picking!