The Cobb procedure is useful for addressing stage 2 posterior tibial tendon dysfunction and is often accompanied by a medial displacement calcaneal osteotomy and/or lateral column lengthening. The Cobb procedure can also be combined with selected medial column arthrodesis and realignment osteotomies along with equinus correction when indicated.
Ramanujam, C. L., Stapleton, J. J., & Zgonis, T. (2016). Tibialis Anterior Tendon Transfer for Posterior Tibial Tendon Insufficiency. Clinics In Podiatric Medicine And Surgery, 33(1), 21-28. doi:10.1016/j.cpm.2015.06.002