Is the internal sphincter hypertonicity the more common problem (than the external u s) in bladder sphincter dissynergy ? ie urinary hesitation ?

Inner sphincter: The term 'overactive bladder' is used to describe dis synergy of the bladder muscle -not contracting in coordinated fashion; this leads to loss of regularity and coordinated, controlled urination. The inner sphincter is controlled by the autonomic nervous system and is involuntary. The outer sphincter is part of the voluntary nervous system, and we can control it (the basis of kegel exercises).