Flexor digitorum profundus tendon-to-bone repair: An ex vivo biomechanical analysis of 3 pullout suture techniques

Cyclic Testing of Pullout Sutures and Micro-Mitek Suture Anchors in Flexor Digitorum Profundus Tendon Distal Fixation

“…4,5,19,20 The failure loads in the current study agree with reported values in the literature with respect to the Bunnell repair technique.…”

“…Their study also measured an average elongation of 8 mm at a load of 20 N. Our gap formation of 6.8 mm after 500 cycles is a concern similar to the one raised in the study by Silva et al, 4 N) in static testing. Differences in implant size and technique in the anchor groups precludes a direct comparison with our study.…”

“…1A, 1B). [1][2][3][4][5][6] Clinical results published for this zone of injury show a 75% fair to poor outcome. 7,8 The reasons for the poor results may reflect issues relating to the fixation, suture choice, and rehabilitation programs.…”

“…4,5,18,19 The application of a single tensile loading profile (static testing) on the in vitro properties of various FDP tendon-to-bone techniques has been reported. 4 4 The deformation at a load of 20 N was reported to be 8 mm, which was considered a considerable amount of displacement. 4 Silva et al 5 went on to study the effects of multiple-strand suture techniques on the tensile properties of FDP tendonto-bone repairs in human cadavers by using suture anchors or the Bunnell technique.…”

“…4 4 The deformation at a load of 20 N was reported to be 8 mm, which was considered a considerable amount of displacement. 4 Silva et al 5 went on to study the effects of multiple-strand suture techniques on the tensile properties of FDP tendonto-bone repairs in human cadavers by using suture anchors or the Bunnell technique. Static testing to failure of repairs consisting of 4-or 8-strand proximal grasping sutures that were secured to the distal phalanx using a suture anchor or a dorsally placed button were examined.…”