- Discussion:
- small chip of bone is taken off w/ flexor tendon;
- tendon retracts to level of PIP joint or distal to PIP, & long vincululm may remain intact;
- a small chip of bone may sometimes be seen on a true lateral x-ray of finger;
- there is
loss of motion at PIP joint, eventhough the
superficialis tendon is not injured;
- vincula remain intact & therefore reinsertion can be performed up to 6 weeks (even 3 mo) if
the tendon does not retract proximally;
- if type II avulsion retracts proximally to the base of digit, then the vinicula will tear and which
mandates repair with in
7 days;
- in this case, tendon end will enlarge to such a size that its impossible to
thread the tendon back thru the digital sheath;
