I had an SPC for over an year couple of years ago. I was 33 then. Regular cleaning and packing around the catheter insertion site is the key that you are already doing. Stricture should have blocked the urethra by now but probably the growth is slow at your age.
I cant think of any alternative, but it is very important that you avoid any sort of infection to develop around SPC insertion site.
Love and wishes :)

Thanks for the reply. I continue to clean the catheter site 3 times daily and pack with gauze. There is no infection. The pain resulting from clothing pressing on the catheter has greatly reduced. Two weeks ago, we gave up on the stricture closing the urethra and my urologist performed a urethrectomy, removing a 1 cm length of the urethra and tying off both stubs. This has not worked as planned. The entire groin area has swollen and become very painful. We are not sure what has happened but urine is now leaking as if the urethra was no longer interrupted. I now have two surgical sites to clean and pack 3 times daily and have to wear supportive underwear with pads. I change pads 4 times daily. The suprapubic catheter is now the lesser of the problems. I sit on a "U" shaped neck pillow to avoid pressure on the area. Thanks again.

I am in my mid 70s and I also had radiotherapy for intermediate stage Prostate Cancer, consisting of HDR Brachytherapy followed by a three week out-patient course of external beam radiotherapy. This was a couple of years ago and I had very few short term side effects, which were very mild and only lasted a few days. However, I was informed by the hospital that there was a low risk of late long-term side effects that could occur some months or even years after completion of treatment. The late bladder side effects including urge incontinence, urinary frequency, and thinning of the lining of the bladder, were said to be rare, so I thought no more of it.

Unfortunately, a couple of months ago I started to get day and night urinary frequency symptoms, followed shortly after by day and night urgency, requiring me to get to the toilet very quickly. This was very inconvenient as it meant I couldn't leave the house. Finally matters got even worse when it deteriorated into full blown urge incontinence. The written advice from the hospital for any bowel side effects (which I didn't have) was to contact the clinical oncologist, but there was no advice given for urinary side effects such as urge incontinence so I was left to deal with it as best I could. The first thing I did was to get myself some incontinence pads to wear under briefs 24/7. Unfortunately the pads turned out not to be sufficient, so I ended up wearing adult size reusable terry towelling nappies/diapers under polyurethane laminate (PUL) waterproof pants, except when I was going out anywhere. For those occasions I wore disposable medium size TENA super slips.

After what I have heard about surgery for urge incontinence, I have ruled out that option, so it looks as if I am stuck with nappies both night and day for the foreseeable future. The reusable terry nappies and PUL pants are a bit too bulky for wearing under trousers when going out, and the disposable TENA slips are too expensive to wear all the time, and they can leak in bed if I sleep on my side. At least I have avoided the sort of problems that many report with SPCs, and I haven't had any UTIs, which seem to be common with catheters, including condom catheters.

I, too, had urge incontinence requiring immediate access to a toilet. My situation at the moment is as close to ideal as is now possible. For the past 2 weeks, 100% of the urine is passing through the SPC and I no longer have any leakage from the urethra nor other sites. Although I wear a pad, it remains dry, with no leakage spots for 24 hours. The pain associated with the urethrectomy side effects is gone. The swelling is gone. I can sit normally without additional aids to reduce pressure. I have not had a UTI since the SPC was installed 6 + months ago. This is the most ideal condition that I've had in over 10 years.