Mechanical properties of the posterior rotator cuff

Rotator Cuff Repair Augmentation in a Canine Model with Use of a Woven Poly-L-Lactide Device

“…The device has high suture retention (approximately 400 N), and its stiffness (approximately 200 N/mm) and ultimate load (approximately 800 N) are similar to those of human rotator cuff tendon strips of similar width [57][58][59] . At time zero, device augmentation did not significantly increase the stiffness of the repair construct in this animal model compared with repairs without augmentation, despite the use of a device with mechanical properties similar to the tendon and deliberately pretensioning the device so as to offload the repair.…”

Scaffold devices for rotator cuff repair

“…The stiffness (w200 N/mm) and ultimate load (w800 N) of human rotator cuff tendon strips have been reported. 38,39,44 Suture retention properties of human rotator cuff tendon are approximately 230 N for 2 mattress sutures subjected to a graduated cyclic load protocol 66 and 224 AE 77 N for 1 mattress stitch pulled to failure (n ¼ 8, K.A.D., unpublished data). These properties of human rotator cuff tendon should be used as targets and guide our choice of scaffolds for rotator cuff repair when mechanical augmentation at time zero is desired.…”

Commercially available extracellular matrix materials for rotator cuff repairs: State of the art and future trends

“…22 AlloPatch is the stiffest device, demonstrating stiffness similar to that of human infraspinatus tendon (97-171 N/mm). 35 The disparity between the structural and material properties of SIS and dermis ECMs compared with tendon at implantation suggests that in their current configuration, SIS and dermis devices may not be capable of providing appreciable mechanical reinforcement to primary rotator cuff repairs. In contrast, the similar mechanical properties between fascia lata ECM and tendon suggest that fascia devices may be able to offer mechanical augmentation.…”