Compressible knitted adjuncts with finished edges

A stapling assembly for use with a surgical stapler, comprising:

• a cartridge having a plurality of staples disposed therein, the plurality of staples being configured to be deployed into tissue;
• and
• a knitted adjunct extending from a first lateral end to a second lateral end with a longitudinal axis extending therebetween, the adjunct being configured to be releasably retained on the cartridge such that the adjunct can be attached to tissue by the plurality of staples in the cartridge, the adjunct comprising
• a top layer formed of at least first fibers, the top layer having a first longitudinal edge and a second longitudinal edge that is opposite the first longitudinal edge, each of the first and second longitudinal edges extending along the longitudinal axis of the adjunct,
• a bottom layer formed of at least second fibers, the bottom layer having a third longitudinal edge and a fourth longitudinal edge that is opposite the third longitudinal edge, each of the third and fourth longitudinal edges extending along the longitudinal axis of the adjunct,
• spacer fibers intertwined with and extending between the top and bottom layers to thereby connect the top and bottom layers together,
• a third fiber interconnecting the top and bottom layers along at least a portion of the first and third longitudinal edges to form a first finished edge that defines a first portion of a perimeter of the adjunct and substantially prevents fraying therealong, and
• a fourth fiber interconnecting the top and bottom layers along at least a portion of the second and fourth longitudinal edges to form a second finished edge that defines a second portion of the perimeter of the adjunct and substantially prevents fraying therealong.