The authors point out that the failure rates of cuff repair continue to be high, especially in large and massive tears.
They studied 7 matched pairs of sheep infraspinatus tendons were randomly repaired with either a suture bridge or suture bridge with grasping suture.
They found that the rotator cuff footprint displacement was less during tensile loading with the addition of the medial grasping suture.
The ultimate load to failure was significantly greater with the addition of the grasping suture.
Interestingly, in all cases the mode of failure was the tendon pulling off the footprint with suture cutting through the tendon.
Comment: It is not surprising that the addition of more sutures increases the load to failure, see the post linked here..
It is important to note that cuff repairs fail by suture tension overload. This study was performed using healthy sheep tendons. Poor quality of tendon or insufficient quantity of tendon can be expected to increase the risk of failure with any repair technique. It remains to be seen whether the addition of another stitch improves the success rate in chronic large tears.
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