This twelfth volume in the European Instructional Lectures series continues the format of educational chapters from across orthopaedics and traumatology contributed by distinguished orthopaedic educators in Europe. It provides current material and major advances covering a range of topics including : general orthopaedics, basic science and technology, musculo-skeletal tumours, infections, paediatric orthopaedics, trauma, spine, upper limb, hip, knee, leg, ankle and foot. All the lectures were presented at the 13th EFORT Congress in Berlin, Germany. The Lectures are an authoritative source of information illustrated by radiographs, CT's, MRI scans, and other relevant contemporary imaging modalities, operative photographs, line drawings and tables. They are an invaluable source of instruction for surgeons and trainees alike.