Biomedical subjects

L V Carlsson

Publications and source records attributed to L V Carlsson.

4 recordsLinked to original sources

PubMed1992

Proximally cemented versus uncemented Freeman-Samuelson knee arthroplasty. A prospective randomised study.

We studied the effect of a layer of cement placed under the tibial component of Freeman-Samuelson total knee prostheses with a metal back and an 80 mm intramedullary stem, using roentgen stereophotogrammetry to measure the migration of the tibial component during one year in 13 uncemented and 16 cemented knees. The addition of cement produced a significant reduction in migration at one year, from a mean of 1.5 mm to one of 0.5 mm (p less than 0.01), including a significant reduction in pure subsidence. One year postoperatively the clinical results were similar between the groups, but, at three years, one uncemented knee had required revision.

Adult↗

PubMed1992

A histomorphometric study of unthreaded hydroxyapatite-coated and titanium-coated implants in rabbit bone.

Hydroxyapatite-coated and titanium-coated IMZ dental implants were investigated in an animal study. The implants were placed in the distal femurs of rabbits. Six months after placement, histomorphometric evaluation of the bone-to-implant contact was conducted. The hydroxyapatite-coated specimens demonstrated significantly more direct bone contact compared to the titanium-coated controls.

Alveolar Process↗

PubMed1990

The effect of a stem on the tibial component of knee arthroplasty. A roentgen stereophotogrammetric study of uncemented tibial components in the Freeman-Samuelson knee arthroplasty.

We studied the effect of a metal tray with an intramedullary stem on the micromotion of the tibial component in total knee arthroplasty. Of 32 uncemented Freeman-Samuelson knee arthroplasties performed in London and Gothenburg, nine had a metal backing and stem added to the tibial component. Micromotion of the tibial components, expressed as migration and inducible displacement, was analysed using roentgen stereophotogrammetric analysis up to two years follow-up. The addition of a metal back and a 110 mm stem to the standard polyethylene component significantly reduced both migration over two years and inducible displacement.

Adult↗

PubMed1989

Bone response to plasma-cleaned titanium implants.

Glow-discharged titanium implants, with a presumed high surface energy, and conventionally prepared and sterilized titanium implants were inserted in the rabbit tibia and femur. The removal torque and histology were compared after 6 weeks in situ. No qualitative or quantitative differences were detected for implants with different preoperative preparation. The results indicate that the conventional implant treatment described is sufficient to give a surface condition with similar early healing responses as those observed with glow-discharge-treated implants.

Animals↗