Incidence and Outcome of Popliteal Artery Injury Associated with Knee Dislocations, Ligamentous Injuries, and Close to Knee Fractures: A Nationwide Population Based Cohort Study

ObjectiveArterial injury in knee trauma is rare but can be devastating if the diagnosis delayed. The frequency of concomitant arterial resulting from dislocations remains unclear, and fractures it unknown. primary aim was to investigate incidence requiring hospitalisation. Secondary aims were identify risk factors describe outcome.MethodsTraumatic popliteal artery identified by International Classification Diseases (ICD)-10 codes Swedish National Inpatient registry (NPR), 1998–2014 linked with data using unique personal identification number Registry for vascular surgery (Swedvasc). Risk (PAI) such as cause injury, comorbidities severity extracted NPR. Socio-economic status population count came Statistics Sweden, date death Cause Death Registry.ResultsA total 71 149 admissions due all identified, 359 simultaneous PAIs. Some those injuries non-orthopaedic. proportion PAI after dislocation ranged between 3.4% (46/1370 or multiligamentous injuries) 8.2% (46/564 dislocations), 0.2% fracture close (60/36 483). most common causes falls causing motor vehicle accidents (MVAs) fractures. fact that 46 occurring classified probably explained ICD are chosen retrospectively when patient leaves hospital.ConclusionPAI not uncommon, frequently caused a fall. associated mostly MVA, while low energy practically non-existent. Arterial outcome. Traumatic Registry. A hospital.