Biomedical subjects
Publications and source records attributed to M B Matejczyk.
Two cases of infected total temporomandibular joint replacements are reported. The WBC count, erythrocyte sedimentation rate, and temperature were within normal limits, but erythema, edema, and pain provided the initial clue to the infection. Ultrasonography ultimately revealed a fluid collection and allowed aspiration of the fluid-filled cavity, providing a diagnosis and directing antibiotic therapy.
A reversible cartilage staining technique, applicable to anatomical specimens, has been developed to define the weight-bearing patterns of the ankle joint. The method represents a rapid and accurate procedure for the determination of cartilage contact patterns in multiple positions of function. This technique should prove a useful tool in the detection of weight-bearing areas of other synovial joints.
Antibiotic impregnated cement offers a potential method for salvage of infected total joint replacements. The addition of gentamicin in concentrations of .5, 1.0, and 2.0 per 40 significantly affects the shear strength of Palacos acrylic bone cement. The clinical significance of this strnegth drop is not clear. Large grained antibiotic additives have deleterious effect on shear strength. Measurements were made to determine the effect of gentamicin concentration on the bone-cement interface strength but no trend could be determined. The interface strength was much less than the strength of Palacos alone and suggested that bone strength is the limiting factor.
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