There is ongoing debate among researchers on significance of concomitant Popliteal vein repair in combined injury. Current understanding with animal and clinical research is that popliteal vein ligation will result in venous back pressure leading to small vessel thrombosis resulting in ultimate ischemic gangrene of affected muscles. But two recent clinical research papers by Anahita Dua

https://journals.sagepub.com/doi/abs/10.1177/1708538115589251?journalCode=vasb

and Jordan L Guice https://www.annalsofvascularsurgery.com/article/S0890-5096(19)30408-X/fulltext

contradict this view and suggest that Popliteal vein can be ligate safely.