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Biomedical subjects

D Dall

Publications and source records attributed to D Dall.

5 recordsLinked to original sources
PubMed1989

Radiological loosening after cemented hip replacement for juvenile chronic arthritis.

We reviewed the results of 14 total hip replacements in patients with juvenile chronic arthritis. The mean age at operation was 16 years (range 12 to 22 years); follow-up was from four to 11 years (mean 8.5 years). Postoperatively pain relief was sustained in all but one hip, while movement generally remained significantly restricted. No hip has as yet required a revision operation, although eight hips (57%) show radiological changes suggestive of impending failure. All patients had severe polyarticular involvement with associated restriction of locomotor activity. Potential causes contributing to loosening such as continuing diaphyseal bone growth and increased immunocompetence in adolescence are discussed.

Adolescent↗
PubMed1988

Total hip arthroplasty in Gaucher's disease. Long-term prognosis.

Avascular necrosis of the femoral head is a cause of morbidity in patients with Gaucher's disease. Total hip arthroplasty (THA) is recommended, but there is controversy about the long-term value of this procedure. In eight patients treated with 15 THAs, 11 (73%) have remained fully mobile and asymptomatic up to 14 years following surgery. These long-term follow-up observations are evidence in favor of THA for treatment of hip joint problems associated with Gaucher's disease.

Adult↗
PubMed1979

Discography simplified.

Discography, which is the direct injection of a radio-opaque medium into the nucleus pulposus, provides a useful adjunct in the diagnosis and investigation of pain related to the spine and is planning surgery of the spine. However, the procedure is little used in South Africa and this article serves to discuss its value and to describe new modifications.

Adult↗
PubMed1977

Bone cement and antibiotics.

Antibiotics of various kinds were added to the powdered polymer of methylmethacrylate in a concentration of 1 g antibiotic/40 g cement, prior to the addition of the liquid monomer. Specimens were subjected to mechanical testing by loading them in direct compression on a 20-ton Instron Universal Testing Machine, and load deflection curves were recorded. It was found that the addition of antibiotics does have an effect on the mechanical strength of the cement--the loss was small, less than 10% for both the compressive strength and the elastic modulus, provided the antibiotic was in powder form. Liquid antibiotics resulted in a greater loss of the compressive strength of the mixtures, but specimens tended to be less porous. In vitro studies of the antibiotic properties of the mixtures demonstrated potent antibacterial activity in all the antibiotics tested, except chloramphenicol. Possible clinical applications are discussed. Further in vivo studies are needed before widespread clinical use can be advocated.

Anti-Bacterial Agents↗