{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,4]],"date-time":"2025-10-04T08:04:13Z","timestamp":1759565053994},"reference-count":13,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2011,1,11]],"date-time":"2011-01-11T00:00:00Z","timestamp":1294704000000},"content-version":"vor","delay-in-days":10237,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["obgyn.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Acta Obstet Gynecol Scand"],"published-print":{"date-parts":[[1983,1]]},"abstract":"<jats:p><jats:bold>Abstract. <\/jats:bold> Hysterography was performed on 173 nulliparous patients following termination of midtrimester pregnancy by intra\u2010amniotic prostaglandin F<jats:sub>2\u03b1<\/jats:sub> (PGF<jats:sub>2\u03b1<\/jats:sub>). In 21 hystero\u2010grams (12%) a pathologically wide internal os was found, compared with three out of one hundred routine hystero\u2010grams carried out for infertility examination. A deformed cervical canal with filling defects and synechiae was found in the hysterograms of 28 patients (16%). Only one of the 6 patients with ruptured cervix had a wide internal os. A lami\u2010naria tent was inserted more frequently into the cervix of patients whose internal os was of normal wide. The clinical picture of patients and the courses of abortion inductions did not differ in other respects in patients with normal vs. wide internal cervical os. This leads us to believed that there are two types of cervix: a rigid, hypoplastic cervix with high collagen content, which when exposed to the trauma of abortion induction leads to rupture, but not necessarily to incompetence, and a softer type of cervix, very muscular, which leads to wide internal os and incompetence.<\/jats:p>","DOI":"10.3109\/00016348309155802","type":"journal-article","created":{"date-parts":[[2009,12,8]],"date-time":"2009-12-08T18:00:18Z","timestamp":1260295218000},"page":"253-256","update-policy":"http:\/\/dx.doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Radiographic Findings in Cervix Uteri After Prostaglandin Abortion Induction"],"prefix":"10.1111","volume":"62","author":[{"given":"Pauli","family":"Kajanoja","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kaarina","family":"Aantaa","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2011,1,11]]},"reference":[{"key":"e_1_2_1_2_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1471-0528.1973.tb02201.x"},{"key":"e_1_2_1_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9378(60)90472-5"},{"key":"e_1_2_1_4_1","first-page":"247","article-title":"Complications following prostaglandin F2\u03b1 induced mid\u2010trimester abortion","volume":"46","author":"Duenhoelter J. H.","year":"1975","journal-title":"Obstet Gynec"},{"key":"e_1_2_1_5_1","first-page":"245","article-title":"A new instrument for hys\u2010terosalpingography","volume":"45","author":"Johanson (Unnerus) C. E.","year":"1956","journal-title":"Ann Chir Gynaec Fenn"},{"key":"e_1_2_1_6_1","first-page":"223","article-title":"Observations on patients two years after legal abortion","volume":"19","author":"Jouppila P.","year":"1974","journal-title":"Int J Fertil"},{"key":"e_1_2_1_7_1","first-page":"51","article-title":"Prostaglandin induction of midtrimester abortions: Three years' experience of 626 cases","volume":"37","author":"Kajanoja P.","year":"1975","journal-title":"Acta Obstet Gynecol Scand"},{"key":"e_1_2_1_8_1","doi-asserted-by":"crossref","first-page":"1051","DOI":"10.1016\/0002-9378(74)90258-0","article-title":"Cervicovaginal fistula: An apparent increased incidence with prostaglan\u2010din F2\u03b1","volume":"119","author":"Lowensohn R.","year":"1974","journal-title":"Am J Obstet Gynecol"},{"key":"e_1_2_1_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9378(73)90906-X"},{"key":"e_1_2_1_10_1","doi-asserted-by":"crossref","first-page":"687","DOI":"10.1016\/0002-9378(77)90221-6","article-title":"Uterine rupture following midtrimester abortion by laminaria, prostaglandin F2\u03b1, and oxytocin: Report of two cases","volume":"128","author":"Propping D.","year":"1977","journal-title":"Am J Obstet Gynecol"},{"key":"e_1_2_1_11_1","doi-asserted-by":"publisher","DOI":"10.1016\/0090-6980(77)90014-4"},{"key":"e_1_2_1_12_1","first-page":"562","article-title":"The muscular cervix \u2014 a cause of incompetency in pregnancy","volume":"17","author":"Roddick J. W.","year":"1961","journal-title":"Obstet Gynec"},{"key":"e_1_2_1_13_1","doi-asserted-by":"publisher","DOI":"10.3109\/00016346109158034"},{"key":"e_1_2_1_14_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(72)90995-6"}],"container-title":["Acta Obstetricia et Gynecologica Scandinavica"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.3109%2F00016348309155802","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/obgyn.onlinelibrary.wiley.com\/doi\/pdf\/10.3109\/00016348309155802","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,10,19]],"date-time":"2023-10-19T18:01:54Z","timestamp":1697738514000},"score":1,"resource":{"primary":{"URL":"https:\/\/obgyn.onlinelibrary.wiley.com\/doi\/10.3109\/00016348309155802"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1983,1]]},"references-count":13,"journal-issue":{"issue":"3","published-print":{"date-parts":[[1983,1]]}},"alternative-id":["10.3109\/00016348309155802"],"URL":"https:\/\/doi.org\/10.3109\/00016348309155802","archive":["Portico"],"relation":{},"ISSN":["0001-6349","1600-0412"],"issn-type":[{"value":"0001-6349","type":"print"},{"value":"1600-0412","type":"electronic"}],"subject":[],"published":{"date-parts":[[1983,1]]},"assertion":[{"value":"2011-01-11","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}