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Biomedical subjects

D Ukropina

Publications and source records attributed to D Ukropina.

6 recordsLinked to original sources
PubMed1996

Isolated serratus anterior paralysis: a simple surgical procedure to reestablish scapulo-humeral dynamics.

We present an original surgical technique for the treatment of an isolated paralysis of the serratus anterior muscle. We used this technique on six patients in whom nonoperative treatment failed. We fixed the inferior angle of the scapula at approximately 35 degrees of lateral position with synthetic ribbon: not to the rib behind the inferior scapular angle but to the next lower rib, usually the eighth. Therefore the scapula was not fixed directly to the pectoral cage, but over a loop of 2-2.5 cm in length. This is the crux of the procedure, because this "loose" fixation enables lateral movement of the scapula and complete painless arm elevation without scapular winging. The follow-up period was 1-7 years (mean, 4 years and 9 months). The clinical results were "excellent" for five patients and "very good" in one patient. We recommend this procedure for its excellent restoration of shoulder function.

Adult↗
PubMedDate not supplied

Histopathological evaluation of the carbon fibers application for the substitution of the anterior cruciate ligament--an experimental study on dogs.

The application of allograft-carbon fibers on the experimental group of 15 dogs (German Shepherd race) was histopathologically investigated after the artificial lesion of anterior cruciate ligament (ACL). In definite time intervals (1, 2, 4, 6 months) pathoanatomic and histopathologic findings were analyzed and the proliferation of new connective tissue of predominantly elastic type, between carbon fibers was observed. Beside the lymphocyte infiltration around torn carbon fibers giant cells of a foreign body type were found, and on the surface the epithelium similar to synovial was observed. It was concluded that carbon fibers could not be considered as the ideal artificial ligament.

Animals↗
PubMedDate not supplied

The use of autografts and synthetic carbon fibers in reconstruction of the anterior cruciate ligament--an experimental study on dogs.

Biological characteristics and strength of the anterior cruciate ligament (ACL) after replacement by an artificial carbon fibers ligament--(group 1) and autograft--fascia lata (group 2) were investigated. These two methods were compared in four periods of time by means of clinical course, laboratory parameters, histopathological analysis and biomechanical testing on an Instron apparatus. Strength of neoligament in both examined groups has never achieved the strength of natural, unaffected ACL, and there was no significant difference between two observed groups in relation to clinical and laboratory parameters. Histopathological examination showed the presence of ingrowing of the connective tissue between carbon fibers, but in bone tunnels inside the fibers there was no ingrowing between bone trabeculae. In the group 2, collagenic fibers of the fascia lata were substituted with predominantly elastic connective tissue, with epithelium, similar to synovial, on the surface. No absolute superiority of carbon fibers to fascia lata as a substituent of the anterior cruciate ligament of a dog knee, as an experimental analog, was proved in this study.

Animals↗