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2 Acta of Bioengineering and Biomechanics

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Functional outcome following the implantation of the modal/bipolar radial head endoprosthesis. Preliminary results

Syczewska M., Skalski K., Pomianowski S., Szczerbik E.

Acta of Bioengineering and Biomechanics

2008

Vol. 10, nr 2

43-49

Radial head fractures constitute 33% of all elbow fractures. In cases of unreconstructible fractures, the resection of the head was advocated. Radial head arthroplasty is an alternative way of the treatment. As the implantation could end up with complications, thus new and better designs are constantly looked for. One of such designs is modal/bipolar radial head endoprosthesis. The aim of this paper is to assess the functional outcome following the implantation of this endoprosthesis using movement analysis system. Seven patients participated in the study: 5 after implantation of endoprosthesis and 2 after surgical reconstruction of the radial head. The upper extremity movements with EMG were assessed during gait and pronation/supination movements with and without the external load. The functional abilities of patients with radial head endoprosthesis do not differ from those of the patients after the elbow reconstruction. This allows the patients normal, daily activity, with no restrictions and pain.

A 3-space electromagnetic tracking device - a useful method in an in vitro study

Pomianowski S.

Acta of Bioengineering and Biomechanics

2001

Vol. 3, nr 2

49-53

A 3-space electromagnetic tracking device is used for determinating the position and orientation of a sensor relative to a source by utilizing the principle of low-frequency magnetic field technology. A general description of the application of this system to biomechanical analysis of a spatial rigid body (cadaver elbow as an example) motion is provided. The analysis based on Eulerian angle description has been performed. The system has been found to be quite accurate and easy to use, and it would be a useful tool in kinesiologic research.