title: Weight changes after jaw fixation due to sagittal split ramus osteotomy for correction of prognathous.
abstract: Body weight changes, energy intake and symptoms experienced were studied in 13 patients whose jaws were fixated due to osteotomy for protruding mandible. All except one patient lost weight and the mean weight loss was 7.5 +/- 5.3 kg. The weight reduction was higher in the obese patient (11 +/- 4.2 kg), but also patients of normal weight lost 4.7 +/- 4.6 kg. The reduction of daily energy intake from the preoperative state as 1.5 +/- 1.0 MJ and was in obese patients about twice as much as in the lean ones (2.1 +/- 0.8 MJ and 1.0 +/- 1.0 MJ, respectively). The reduction of energy intake per loss of body weight by 1 kg was in all patients 8.5 +/- 0.67 MJ, in obese 8.3 +/- 0.64 MJ and in lean patients 8.6 +/- 0.75 MJ. The loss of weight was temporary and the patients regained their weights largely or wholly after the fixation period. Ten patients of the 13 felt hunger during fixation period, two had abdominal pains, five constipation and two pollacisuria. Jaw fixation due to osteotomy for protruding mandible decreased the food intake of the patients much and deteriorated their nutritional status by considerable weight loss. Thus advice about fortifying the diet is indicated so that the patients could consume food of high energy content during intermaxillary fixation due to sagittal split ramus osteotomy for correction of prognathous.
mesh_terms: D000293:Adolescent; D000328:Adult; D001835:Body Weight; D002149:Energy Intake; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008334:Mandible / Q000601:surgery*; D010027:Osteotomy / Q000379:methods*; D011378:Prognathism / Q000601:surgery*