Arthroscopic treatment of massive rotator cuff tears.

In the past 10 years, arthroscopic surgeons have gone from being unable to repair any rotator cuff tears arthroscopically to being able to repair virtually all rotator cuff tears, even complex massive tears, arthroscopically. The factors responsible for this rapid evolution have been: (1) recognition of the mechanical principles responsible for a secure repair (margin convergence, knot security, loop security); (2) recognition of major tear patterns that require different techniques of repair; and (3) development of instrumentation and arthroscopic portals that predictably accomplish secure repair of the rotator cuff and direct access to the pathologic areas. In the current study, the author analyzes each factor, anatomic and mechanical, that influences the quality of the repair, and explains how to optimize the overall repair by optimizing each step in the repair. In the author's series of arthroscopic repair of rotator cuff tears, the results have been gratifying, with massive tears achieving final results equivalent to those of smaller tears.