Periulnar Injuries Associated with Distal Radius Fractures

............................................................................................................................. 7 SVENSK SAMMANFATTNING ........................................................................................ 8 ABBREVIATIONS ................................................................................................................. 9 LIST OF PAPERS ................................................................................................................ 10 INTRODUCTION ................................................................................................................ 11 CONNECTIONS ABOUT THE DISTAL ULNA........................................................... 12 Forearm rotation........................................................................................................................... 12 The concept of joint stability ...................................................................................................... 13 Anatomy and function about the DRU joint ........................................................................... 13 The effect of malunion on functional outcome........................................................................ 21 Techniques of corrective osteotomy of the distal radius ...................................................... 22 Pathomechanisms of TFCC injuries associated with distal radius fractures. ................ 22 The effect of ligament injuries on functional outcome ......................................................... 23 Diagnosis of a TFCC injury ........................................................................................................ 23 AIMS OF THIS THESIS .................................................................................................... 25 MATERIAL AND SUBJECTS .......................................................................................... 26 Cadaveric specimens .................................................................................................................... 26 Patients ........................................................................................................................................... 26 METHODS ............................................................................................................................ 28 Functional outcome measurements .......................................................................................... 28 Imaging ........................................................................................................................................... 30 Injury classifications .................................................................................................................... 31 Radioulnar stress test.................................................................................................................. 32 Cadaveric testing .......................................................................................................................... 33 Surgical procedures ...................................................................................................................... 35 Bald ulnar head test..................................................................................................................... 36 STATISTICAL METHODS................................................................................................ 38 RESULTS .............................................................................................................................. 39 Effects of corrective osteotomy on outcome............................................................................. 39 Non-invasive diagnosis of foveal TFCC injury ....................................................................... 39