[Results of treating fractures of the femur and tibia with closed intramedullary fixation]. / Wyniki leczenia zlaman trzonu kosci undowej i piszczelowej zespoleniem sródszpikowym metoda zamknieta.

The paper presents the technique and results of treatment of 450 fractures of the femur or tibia. Closed intramedullar fixation has been employed. There was no surgical approach to the fracture site. The intramedullar nail was inserted through small incision remote from the fracture. Flexible reamers were used to prepare the medullar cavity. X-ray intensifier was used to monitor the procedure. If the fracture was located outside the middle third the nail was interlocked. Fixation achieved was stable, no additional immobilization was needed. Mobilization was started at the first post-operative day. No wound infection or osteomyelitis occurred. Weight bearing was allowed after 2 months for 80 per cent of the patients. In all cases the union was achieved before the end of the third month.

[Results and prognosis after highly selective vagotomy in the light of the mathematical theory of approximate sets]. / Wyniki i rokowanie po wysoce wybiórczej wagotomii w swietle matematycznej teorii zbiorów przyblizonych.

Information system for 122 patients with peptic ulcer, who underwent highly selective vagotomy within 5 and 13 years earlier has been analysed with the use of technique based on the approximate sets theory. Cause-effect relationship between data describing the analysed patients before surgery and remote result of therapy (expressed in a 4-score Visick's scale) have been sought. Using a technique of the approximate sets, information system has been described from 11 to 5 significant and necessary preoperative data most closely related with the result of therapy. Models of the typical representatives of results classes have been constructed with the use of a/m data. Then, a decision algorithm has been made. Such an algorithm represents cause-effect relationship between significant data and the result of treatment. Models and decision algorithm for the favourable results of the treatment (I and II class in Visick's scale) constituted a base for the verification of indications to the highly selective vagotomy and construction of data base for computer-assisted system of the treatment of peptic ulcers with the highly selective vagotomy.

[Factors effecting recurrence of duodenal ulcers after highly selective vagotomy]. / Czynniki wplywajace na nawrót wrzodu po wysoce wybiórczej wagotomii.

Recurrence of duodenal ulcer was diagnosed in 15 patients who underwent highly selective vagotomy before 6-13 years, i.e. in 12.2%. Factors possibly contributing to such a recurrence were analysed. Patients with ulcer recurrence were: 1) non-qualified workers, 2) tobacco smokers, 3) heavy drinkers, 4) users of ulcerogenic medicines, and 5) were involved into conflict situations.