Primary findings of the systematic reviews on the Scandinavian knee ligament registries
| Patient-related factors | Younger patients report superior knee function and have an increased risk of additional ACL reconstruction |
| The risk of revision ACL reconstruction does not differ between sexes; however, females have an increased risk of contralateral ACL reconstruction. | |
| Treatment-related factors | Over 90% of all ACL reconstructions in Sweden and over 80% in Denmark are performed with hamstring tendon autografts. In Norway, the majority of ACL reconstructions were performed with patella tendon autografts in 2016. |
| Hamstring tendon autografts are associated with small but superior short-term knee function compared with patella tendon autografts. | |
| Studies reporting on graft choice reported an increased risk of revision ACL reconstruction for hamstring versus patella tendon autograft. | |
| Risk of ACL revision is reduced by 14% for every 0.5 mm increase in hamstring graft diameter. | |
| Injury-related factors | Concomitant injuries are associated with inferior patient-reported knee function. |
| Concomitant cartilage injuries are associated with a reduced risk of revision ACL reconstruction |
ACL, anterior cruciate ligament.