Prospective study of ascending venogram following total hip replacement or total knee replacement

The ascending leg venogram was performed in one hundred forty six lower extremities on the 7th day followingtotal hip replacement(THR) or total knee replacement(TKR). The results were as follows: 1. Overall incidence ofdeep vein thrombosis(DVT) in 146 limbs who underwent THR or TKR or was 10%: DVT was detected in 8 limbs among 110 limbs following THR(7%) and 6 limbs among 36 limbs following TKR(17%). 2. The anatomic distribution of DVT was asfollows: In THR, 12.5% in FV, 25% in FVand PV, 25% in FV and PV and CV, 12.5% in FV and CV, and 25% in CV. In TKR,100% in CV. 3. There were many anatomic variations in deep veins of lower extremities: Accessory SFV and multiplePV(2), and accessory SFV and double PV(1). 4. There were multiple SFV in 37%, and 19% of these limbs had DVT. Itrepresented statistically higher than 4% in limbs with a single SFV(P-value<0.05) 5. The incidence of DVT was 8% in cases of multipul PV, and there was no statistically significant difference between these groups and single PVgroups. 6. We could assess number of valves from popliteal vein to common femoral vein in 72 limbs. Mean number ofvalve was 5.45 and there was no statistically significant difference between groups having valve over 5 and under5.