Hi Jayne
I've been on Cialis 5mg daily for last 11 days and nothing has changed, impotence wise, not that I expected it to.
Perhaps I'm a bit more low back achey, and could say that the Cialis was responsible, but ( linking it to your earlier comment about OH's backache..) I strongly suspect it has a lot more to do with how the discomfort and incontinence post op has led to me sitting differently and for longer periods than I'm used to.
I've been either sitting reclined, with the weight through my tailbone, or leaning forward and hooking my feet under a dining chair. This means that the muscles either side of the spine (at the level below the ribs) are either being held stretched, in the former, or are overworking in a shortened position in the latter. They ache for this reason. They're doing work they're not usually called on to do for such long periods.
In a healthy low back, sitting is accomplished by postural muscles, not the ones I'm over-using, and part of that postural system is the muscles of the pelvic floor. But after a prostatectomy those pelvic floor muscles are suddenly required to be in a heightened state of alertness to cope with incontinence. They're not able to respond as readily to small challenges in sitting balance. It's like asking them to multitask when they're not used to doing one of the tasks. As a consequence you can end up sitting more statically 'down there'. Typically, the pain is worse when rising from a chair,after sitting for sustained periods, and eases when walking a bit.
Any half decent physio should be able to advise you how to sit correctly- and it is not 'chest out -shoulders back' as if you're having your army photo taken! You can still follow up any necessary investigations whilst you're exploring this approach to self management.