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Biomedical subjects

B Maltby

Publications and source records attributed to B Maltby.

5 recordsLinked to original sources
PubMed1991

'Z' metatarsal osteotomy: modified Mitchell's osteotomy for hallux valgus.

The Mitchell's osteotomy is an established and successful operation for hallux valgus. We report a previously undescribed procedure comprising a step or 'Z' osteotomy that is a simplified version of the Mitchell's osteotomy which involves less extensive soft tissue dissection and avoids opening the first metatarsophalangeal (MTP) joint. In total, 51 operations in 40 patients were reviewed with a mean follow-up of 4.7 years. The results were compared with those reported by Mitchell in his paper of 1958, using the same criteria. The mean age was 24 years and 82% of patients were women. In 88% of patients the results were rated excellent or good and there were no serious complications. These results suggest that this procedure is as successful as the Mitchell osteotomy in young patients, and it may have long-term benefits.

Adolescent↗
PubMed1982

Exchange of potassium and strontium in adult bone.

The kinetics of exchange of strontium (85Sr) and potassium (42K) were studied in the mid-tibial cortical bone of 37 adult dogs. After injection of these two tracer cations and tracer-labeled albumin into the tibial nutrient artery, two types of observations were made: 1) collection of sequential venous samples to provide the outflow indicator-dilution curves and to calculate the extraction and retention at early times; and 2) detection of energy-selected gamma emissions via a detector over the tibia to give the time course of content of 42K and 85Sr in the tibia. Extractions of K+ and Sr2+ were 50 and 60% during a single transcapillary passage. More Sr2+ than K+ was retained in the first minutes. Their rates of washout over a 3-h period were similar. The interpretation is that the rate of uptake at extravascular sites is faster for Sr2+ than for K+, as is the rate of release, and that the extravascular volume of distribution for Sr2+ (adsorption sites in the interstitium or on bone) is much larger than that for K+ (intracellular).

Animals↗