Theoretical and clinical bases of the method of osteosynthesis by screws in oblique and spiral fractures of the tibia

The results of experiments with axial loading of human tibia preparations used for simulation of oblique (spiral) fractures and different methods of osteosynthesis by screws revealed that higher strength was ensured by the method of bone connection with the screws directed perpendicular to the segment axis (4.1 times more than in case of screws directed perpendicular to the plane of fracture). Explanation of the obtained facts necessitated development of more precise biomechanical model of deformation. Practical recommendations have been formulated.     

Tympanic membrane prosthesis using soft magnetoelastomer]

This paper presents a new method for tympanum prosthesis application. The prosthesis is fixed by the interaction of magnetic pondermotive forces between two soft petals of a magnetoelastomer. This type of prosthesis was applied to 30 patients with dry perforative otitis media, aged 51-75 years. The intervention was performed in the outpatient department. Prostheses are recommended to be replaced every 3 months. These patients showed good tolerance of the treatment, which significantly improved their hearing level. The method of prosthesis fixation was reliable and atraumatic.     

Isolation and characterization of endometrial leukocyte populations by flow cytometry

Potentialities of the flow cytornetry method in studies of the qualitative and quantitative composition of endometrial immunocompetent cells are demonstrated. The studied leukocyte populations are found to occur in negligible quantities in the endometrium. Translated fromByulleten' Eksperimental'noi Biologii i Meditsiny, Vol. 117, N ^o 1, pp. 68–71, January, 1994.     

Internal osteosynthesis in pseudarthrosis without inter-fracture tissue dissection

In the paper is presented the experience of operative treatment of 149 patients with false joints of bones, which were subjected to internal osteosynthesis with preservation of inter-fracture tissues. The operation was carried out in the absence of real danger of suppuration. The most frequently operated were the patients with tibia pseudarthrosis (72.5%), fixed by means of a plate. Adhesion has been achieved with 96.7% of patients. Complications: osteomyelitis (1), skin necrosis (2), fractured fragment dislocation under the action of contractor compression application (2). In the process of treatment of 439 patients by means of internal osteosynthesis with dissection of inter-fracture tissues, separation of bone fractured fragments and medullar cavity opening, adhesion has been achieved with 87.2% of patients.