Using the Center of Rotation of Angulation Concept in Hallux Valgus Correction: Why Do We Choose the Proximal Oblique Sliding Closing Wedge Osteotomy?

Many different surgeries have been proposed for hallux valgus treatment, osteotomies being the currently recommended ones. Because of high recurrence rates, distal, diaphyseal and proximal osteotomies have been used to improve alignment and sesamoid reduction. The center of rotation of angulation (CORA) concept applies to any deformity and helps to completely realign 2 bone segments. When used with proximal osteotomies, bone displacement and angulation is performed obtaining complete deformity correction. The proximal oblique sliding closing wedge (POSCOW) osteotomy follows the CORA concept and permits preoperative planning. Future directions must include the correction of the pronation deformity of the metatarsal.