In double-row arthroscopic rotator cuff repair, what is the primary biomechanical advantage demonstrated over single-row repair techniques?

Explanation:
The correct option is c. The primary biomechanical advantage of double-row rotator cuff repair (including suture bridge constructs) is the restoration of a larger, pressurized contact area at the tendon-to-bone footprint. This leads to higher initial fixation strength, decreased gap formation, and theoretically improved healing rates compared to single-row constructs. Reference: Millett PJ et al., Am J Sports Med.