“…Fewer cases of venous thrombosis (0.11%) were found compared to women who had to remain in bed for the usual length of time (0.41%) after delivery between 1927 and 1936. 11,27 For a long time after the Second World War gynaecologists and obstetricians faced a dilemma. As it was becoming more and more accepted that early ambulation prevented the risk of venous thrombosis, they were also afraid that premature ambulation might lead to increased risks of prolapses of the uterus, bladder and even rectum (Huisjes, Bennebroek-Gravenhorst, personal communication).…”