These injuries can be trivial or potentially disastrous depending on the ligament involved and the severity of the injury. A broken bone has more predictable healing than a ligament and often these are more serious than a fracture. Early prompt diagnosis is essential. Two important ligamnets that can be damaged are the scapho-lunate ligament or luno-triquetral ligament (both import stabilising ligaments in the carpus). I use MRI, MRI arthrogram and wrist arthroscopy to diagnose and treat. Often a cast is needed and extensive post-operative rehabilitation.