Niyaz Hareni Association between duration of sciatica and outcome of lumbar disc herniation surgery in elderly (ST-projekt) Arkan Sayed-Noor Tobacco smoking and the incidence of surgical intervention for lumbar spinal stenosis. Cohort study of 331941 workers. Johan Wänman Metastatic spinal cord compression as the initial manifestation of malignancy (ST-projekt) Vasileios Sarakatsianos Increased knee laxity with hamstring tendons autograft compared to patellar tendon allograft. A cohort study of 5462 patients with primary anterior cruciate ligament reconstruction. Jesper Kraus-Schmitz Septic arthritis after anterior cruciate ligament reconstruction in Sweden – incidence, risk factors and outcome. Jamie Brown Conservatively treated PCL injury: clinical, radiographic and patient-related outcomes 11 years after injury. Evelina Pantzar Validation of markerless video assessment with three-dimensional gait analysis in children and young adults with cerebral palsy Lukas Helgesson Early osteoarthritis after slipped capital femoral epiphysis: cartilage degeneration, residual deformity and patient reported outcome. (ST-projekt) Sofia Lundh Walking ability, fatigue and quality of life in adults with cerebral palsy