This document discusses the tendon transfer technique of transferring the latissimus dorsi tendon to replace the torn posterior rotator cuff. It outlines the indications, prerequisites, pre-habilitation, biomechanics, surgical principles, positioning, portals, technique steps, post-surgery rehabilitation in 4 stages, and results from prospective studies showing 79.5% patient satisfaction and 89.8% intact tendons on MRI at 1 year follow up. Key factors for success include realistic expectations, pre-op specialist rehab, a committed patient, good communication, and secure graft fixation via either open or arthroscopic surgery.