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Biomedical subjects

R Granowski

Publications and source records attributed to R Granowski.

14 recordsLinked to original sources
PubMed1994

[Photoelastic study of fragment compression in fracture of the femoral neck stabilized with the Zespol hip fixator].

The paper presents analysis of the forces within fracture line of femoral neck stabilized with Zespol hip fixator. The investigation has been carried out on specifically designed model of the proximal femur; the forces were measured in photoelastic fashion with the use of epoxy resin cubes as dynamometers. The magnitude of forces within fracture line has been verified and related to the position of the platforms of the screws versus the plate before tightening the nuts.

Biomechanical Phenomena↗
PubMed1993

[A new type of versatile fixator Polfix].

Theoretical foundations, principles of construction, surgical technique and early clinical findings concerning patients treated with the use of new POLFIX fixator have been presented. It is a small clamp type fixator used (like ZESPOL) for both external and internal osteosynthesis but with better biomechanical and clinical properties. The construction, however, is more complex.

Adolescent↗
PubMed1991

Zespol. An original method of stable osteosynthesis.

Poor clinical results with autocompression plates and six years of biochemical investigations, have led to the conclusion that a plate should not be tightened directly to a bone. Consequently, in 1979, platform screws and special autocompression plates were invented. These were later developed into the original system of stable osteosynthesis called Zespol. The system consists of a plate, platform screws, and nuts that together form a small clamp fixator. The Zespol system enables a surgeon to perform compression, neutralization (protecting) contact, and bridging osteosynthesis. In all types of osteosynthesis, the Zespol fixator can be used either internally or externally. From June 1982 through December 1988, Zespol was applied in 1295 osteosyntheses (850 fractures and 445 pseudoarthroses). The average healing time of fractures was 18 weeks, and in cases of nonunions, 21 weeks. Second operations were required in 5.1% of cases, generally with good or fair results. The overall final results were 97.9% good and fair, and 2.1% poor.

Adolescent↗