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Biomedical subjects

R K Rogers

Publications and source records attributed to R K Rogers.

5 recordsLinked to original sources
PubMed1994

Subtrochanteric fractures of the femur treated with the Zickel nail.

In a retrospective study of 41 subtrochanteric fractures treated with Zickel intramedullary nails (with a follow-up period of at least 1 year) there was a union rate of 100% (39/39). Union occurred between 4 and 7 months (average healing time 5.2 months). There were no implant failures. To date 4 patients have had their Zickel nails successfully removed. In 48% of the cases we had some difficulties with the stability of the fracture, and in 12% there was a need for additional cast immobilization. In 9 cases there was shortening of 1.5 to 4 cm (average shortening of 2 cm). Therefore we no longer recommend use of the Zickel nail in the treatment of acute subtrochanteric femur fractures.

Adult↗
PubMed1993

Subtrochanteric fractures of the femur treated with the Zickel nail.

In a retrospective study of 41 subtrochanteric fractures treated with Zickel intramedullary nails (with a follow-up period of at least 1 year) there was a union rate of 100 per cent (39/39). Union occurred between 4 and 7 months (average healing time 5.2 months). There were no implant failures. Four patients have had their Zickel nails successfully removed. In 48 per cent of the cases we had some difficulties with the stability of the fracture, and in 14 per cent, all of them long oblique comminuted fractures, skeletal traction was needed for 6 weeks. In nine cases there was a shortening of 1.5-4 cm (average 2 cm). Although our overall experience with the Zickel nail has been favourable in the treatment of non-union of subtrochanteric fractures, and with the elderly patients who had a simple subtrochanteric fracture secondary to minor trauma, we no longer recommend its use in the treatment of subtrochanteric fractures with marked comminution, because it does not give sufficient rotational and axial stability.

Adult↗
PubMed1989

Microplate measurement of urinary albumin and creatinine.

We describe microplate methods for measurement of human urinary albumin (HUA) by competitive enzyme-linked immunosorbant assay (ELISA) and creatinine with a modified commercial enzymatic kit. Incorporation of substrate mixing into the competitive ELISA changes the dynamic absorbance-concentration response, greatly simplifying calculations and improving sensitivity and accuracy. Measurement of creatinine in urine and plasma samples with a commercially available enzymatic kit modified for analysis by use of an inexpensive microplate reader produced values comparable in precision and accuracy to those obtained by an automated kinetic Jaffé method.

Adult↗