Types of Vascular Response to Direct Intraoperative Electrical Stimulation of the Sciatic Nerve after Autoneuroplasty and Their Effect on Limb Function Recovery.

We studied different types of the vascular response to direct intraoperative low-frequency electrical stimulation of the sciatic nerve after autoneuroplasty of its tibial portion and analyzed their effects on the limb function recovery. Rats (n=20) underwent 40-min intraoperative electrical stimulation, and hemodynamics in the leg was recorded by photoplethysmography. Functional recovery of the tibial nerve was assessed using a walking path analysis within 12 weeks after surgery.

[Variants of clinical course of Dupuytren's contracture and palmar aponeurosis tissue composition in patients of different age groups.].

For the purpose of comparative analysis of the clinical course of fascial fibromatosis and tissue composition of the palmar aponeurosis in patients of different age groups сase reports and histological surgical material from 179 Dupuytren's contracture patients treated in 2014-2018 were analyzed. Patients were distributed in age groups: the 1st - younger than 50 years, the 2nd - 50-65 years, the 3rd - over 65 years old. In all groups four variants of Dupuytren's contracture clinical course were noted: swift, fast, benign and deffered.

Assessment of palmar subcutaneous tissue vascularization in patients with Dupuytren's contracture.

Aim: To investigate the structural and functional characteristics of palmar hypodermal tissue vascularization in Dupuytren's contracture patients of different age groups.

Methods: Eighty-seven Dupuytren's contracture patients underwent partial fasciectomy. Twenty-two of them were less than 55 years old (Y-group, = 22); the others were 55 and older (O-group, = 65).

Causes of peroneal neuropathy associated with orthopaedic leg lengthening in different canine models.

Peroneal neuropathy is one of the complications of orthopaedic leg lengthening. Methods of treatment include slowing of distraction and decompression both of which may lead to additional complications. The purpose of this study was to analyse the changes in histologic peroneal nerve structure during experimental orthopaedic lengthening using various modes of manual or automatic distraction.

Benefits of Ilizarov automated bone distraction for nerves and articular cartilage in experimental leg lengthening.

Aim: To determine peculiarities of tissue responses to manual and automated Ilizarov bone distraction in nerves and articular cartilage.

Methods: Twenty-nine dogs were divided in two experimental groups: Group M - leg lengthening with manual distraction (1 mm/d in 4 steps), Group A - automated distraction (1 mm/d in 60 steps) and intact group. Animals were euthanized at the end of distraction, at 30 day of fixation in apparatus and 30 d after the fixator removal.