Monitoring Of Helsingborg Acute Knee Injuries (MOHAK)

Inclusion Criteria: 1. Age 12-40 years at inclusion (inclusion of patients younger than 18 will require parental approval) 2. A history of knee injury not more than 4 weeks prior to inclusion 3. Agreement and informed consent to participate in the study Exclusion Criteria: 1. Any MRI contra-indications (such as extreme obesity, metal implants, claustrophobia etc.) 2. Pregnancy 3. A history of deep vein thrombosis (DVT) or a disorder of the coagulative system 4. General disease that effects physical function or systemic medication/abuse of steroids 5. Any other condition or treatment interfering with the completion or assessment of the trial.