Dr Kristian Kley is a highly regarded and vastly experienced orthopaedic surgeon based in Hannover, Germany. He carries out hundreds of complex operations every year with a special focus on reconstructive hip and knee surgery. Enjoying a global reputation for his expertise in complex cases, many of his pioneering new techniques for applying osteotomy to knee conditions have become accepted practice. Renowned for his highly efficient surgical workflows, which act as a model for other to follow, he also works as consulting surgeon for several international organisations working in the field of corrective and reconstructive knee surgery. A much sought-after speaker, he lectures and teaches worldwide.