The Rosatelli Spin is a surgical maneuver used during cataract surgery to facilitate nucleus rotation within the capsular bag to loosen the lens cortex. This technique, developed by Dr Neto Rosatelli, involves a multiple rotational movement after hydrodissection, designed to fully mobilize the lens nucleus and confirm that it is free from capsular adhesions. After completing the capsulorhexis and performing a thorough hydrodissection—ensuring a visible fluid wave—the surgeon gently rotates the nucleus multiple spins in each direction by applying a tangential movement at the equator which causes the nucleus to spin within the bag.
A nucleus that spins freely indicates successful hydrodissection and separation of cortical and nuclear material from the capsule, reducing the risk of zonular stress or capsular rupture during phacoemulsification. In contrast, resistance to spinning suggests incomplete hydrodissection or focal adhesions, signaling the need for additional fluid waves or hydrodelamination. This maneuver is particularly helpful in mature, brunescent, or pseudoexfoliative cataracts where zonular support may be compromised. Executed properly, the Rosatelli Spin enhances safety, improves efficiency, and facilitates smoother nuclear disassembly during the subsequent steps of phacoemulsification.
