After forcible dilatation under ether the cervical canal rarely returns to its previously angular or contracted condition. The cervix shortens and widens, and the plasma thrown out thickens and stiffens the uterine walls. In a small minority of cases the operation must be repeated. Dysmenorrhoea or sterility, if dependent solely upon the flexure, is cured by the dilatation. The comparative safety of forcible dilatation in the hands of a skilful and experienced gynecologist may be contrasted with its great danger when undertaken by an operator unacquainted with the special requirements of uterine surgery. Peri-uterine inflammation is a positive contraindication to the operation. Post-uterine inflammation, which has drawn the anteflexed or anteverted uterus upward and backward by the contraction of the utero-sacral ligaments, often produces traction upon the vesico-vaginal wall and neck of the bladder, with a constant desire to micturate. For the relief of this intractable symptom, which sometimes goes on to cystitis, Emmet has proposed a most satisfactory remedy known as his buttonhole operation of urethrotomy.[11] He makes a longitudinal opening about five-eighths of an inch long through the urethro-vaginal wall, between the meatus and the neck of the bladder, without cutting through either. To prevent the opening from healing together, the margins of the mucous membrane of the urethra are united with fine catgut sutures to the {181} margins of the mucous membrane of the vagina. According to Emmet, the operation relieves irritation due to traction on the neck of the bladder by freeing the pelvic fascia at the fixed point where it converges to its pubic attachment. The operation is equally applicable for the relief of this symptom when due to inflammation in any other part of the pelvis. The same result may be secured, but less satisfactorily, by forcible dilatation of the urethra. [Footnote 11: Emmet's _Principles and Practice of Gynecology_, 3d ed., pp. 275 and 761.] From personal experience the author can testify to the gratifying effects of this operation. Vesical irritation caused by post-uterine inflammation and consequent contraction of the utero-sacral ligaments is often wrongly attributed to the mechanical pressure of the anteflexed fundus uteri upon the bladder, which is manifestly impossible, if the contracted utero-sacral supports hold the entire uterus back away from the bladder. The various anteflexion and anteversion pessaries which have been devised for the purpose of propping up the corpus are almost useless. Their false reputation depends upon the relief which they frequently give to complicating prolapse, the symptoms of which have been wrongly attributed to anteflexion or anteversion. The same pessaries therefore may be applied as in descent. (See Etiology and Clinical History of Descent.) Intra-uterine stem pessaries designed to straighten the flexed uterus are sometimes effective, and always dangerous. {182}