My uncle just undergone turp for enlarged prostate gland. post surgery he has hypotonic bladder. is it curable!? what is the treatment

Difficult problem: If recent there may still be recovery, the first step in treatment is a good evaluation, usually with urodynamic studies to determine if it is truly a weak bladder vs a persistent obstruction. If the bladder is weak, but he can void and does not experience repeat infections then it may be best to do nothing beyond behavioral strategies. The only real treatment is a catheter, preferably self-cath.

Retention: Failure to empty the bladder following resection of a large obstructing prostate is not that uncommon. Some men have to self catheterization or have an indwelling catheter for some time after turp.