loss of function may occur when we do repair in flexor tendon in which area.. from the distal palmer crease to the site of in sertion of FDS

loss of function may occur when we do repair in flexor tendon in which area:
a. insertion of FDS
b. from the distal palmer crease to the site of in sertion of FDS
c. carpal tunnel
d. proximal to carpal tunnel
(b)