| Estes operation | An operation for sterility in which a portion of an ovary is implanted on one uterine cornu. (05 Mar 2000) |
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| Estlander operation | Use of an Estlander flap in plastic surgery of the lips. (05 Mar 2000) |
| Jacobaeus operation | An obsolete term for pleurolysis. (05 Mar 2000) |
| Jansen's operation | An operation for frontal sinus disease, the lower wall and lower portion of the anterior wall being removed and the mucous membrane curetted away. (05 Mar 2000) |
| Kasai operation | An operation for biliary atresia in which a Roux-en-Y loop of jejunum is anastomosed to the hepatic end of the divided extravascular portal structures, including rudimentary bile ducts. Synonym: Kasai operation. (05 Mar 2000) |
| Kazanjian's operation | Surgical extension of the vestibular sulcus of edentulous ridges to increase their height and to improve denture retention. See: ridge extension. (05 Mar 2000) |
| Keen's operation | Removal of sections of the posterior branches of the spinal nerves to the affected muscles, and of the spinal accessory nerve, as a cure for torticollis. (05 Mar 2000) |
| Keller-Madlener operation | <procedure, surgery> An operation for treatment of gastric ulcer located in the proximal cardia that involves 75% gastrectomy and gastrojejunostomy. (05 Mar 2000) |
| Kelly's operation | Correction of retroversion of the uterus by plication of uterosacral ligaments, correction of urinary stress incontinence by vaginally placing sutures beneath the bladder neck. (05 Mar 2000) |
| Killian's operation | <procedure, surgery> An operation for frontal sinus disease in which the entire anterior wall is removed and the mucous membrane is curetted away. The ethmoid cells are scraped out through an opening in the nasal process of the maxillary bone, and the upper wall of the orbit is removed as well. (05 Mar 2000) |
| fenestration operation | A rarely used surgical procedure producing an opening from the external auditory canal to the membranous labyrinth to improve hearing in hearing impairment of the conduction type. (05 Mar 2000) |
| Koerte-Ballance operation | Operative anastomosis of the facial and hypoglossal nerves for the treatment of facial paralysis. (05 Mar 2000) |
| Kondoleon operation | Excision of strips of subcutaneous connective tissue for the relief of elephantiasis. (05 Mar 2000) |
| Urban's operation | Extended radical mastectomy, including en bloc resection of internal mammary lymph nodes, part of the sternum, and costal cartilages. (05 Mar 2000) |
| Kraske's operation | Removal of the coccyx and excision of the left wing of the sacrum in order to afford approach for resection of the rectum for cancer or stenosis. (05 Mar 2000) |