Femoro-popliteal venous graft entrapment.

The authors report a case of femoropopliteal venous bypass graft entrapped between the inner femoral condylar epiphysis and the medial head of the gastrocnemius muscle, the graft being inadvertently placed medially to this tendinous structure. What makes the case exceptional is that the indication for the venous bypass graft was a femoropopliteal thrombosis, secondary to an initially overlooked popliteal artery entrapment syndrome. In the discussion, the authors made an extensive review of the literature on this rare abnormal relationship between the popliteal artery and the medial head of the gastrocnemius (embryology, anatomical variations, clinical features, diagnostic measures and treatment).