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Biomedical subjects

P F Wallace

Publications and source records attributed to P F Wallace.

10 recordsLinked to original sources

Feasibility and utility of microsatellite markers in archaeological cattle remains from a Viking Age settlement in Dublin.

Nineteen cattle bones from the Viking 10th and early 11th century levels in Dublin were assessed for presence of reliable genotypes from three autosomal markers. Due to the good preservational condition of the samples, it was possible to amplify and type at least two out of three of the microsatellite markers (CSRM60, HEL1 and ILSTS001) in 11 specimens. Full three-loci genotypes were obtained from a subset of seven of these samples. A comparative analysis was performed using data from the same three markers in 11 extant British, Irish and Nordic cattle breeds. Although the medieval remains displayed lower levels of diversity than the modern European breeds, the results fit within the ranges obtained from the extant populations. The results indicate a probable origin for the ancient Irish cattle as the remains group significantly more closely with breeds from the British Isles than with those from Scandinavia. The data collected indicate that microsatellites may be useful for the further study of ancient cattle.

Animals↗

Excision of the hook of the hamate: a retrospective survey and review of the literature.

Fractures of the hook of the hamate frequently fail to unite. In symptomatic nonunion, surgical excision of the hook has provided relief of pain in the few reported cases. In a survey of surgeons, 133 cases of excision of the hook to treat nonunion were reviewed retrospectively. The complication rate associated with excision is three percent. These complications, such as injury to the ulnar nerve or the superficial palmar arch and median nerve paresthesias secondary to retraction are due more to the surgical exposure than the actual excision.

Carpal Bones↗

The S-H-A-F-T syndrome in the upper extremity.

The S-H-A-F-T syndrome is a passive form of Munchausen's syndrome in which a patient submits to multiple surgical procedures to a part of the upper extremity. Apart from the obvious connotation, the title emphasizes that the patients are sad, hostile, anxious, frustrating, and tenacious, with psychological problems similar to those of patients with Munchausen's disease--problems which are aimed at secondary gain from a psychological and/or financial nature. Three representative patients are described who had a total of 25 operations as well as multiple injections of cortisone performed by 11 doctors in five different states. Early recognition to avoid progressively mutilating operations is urged.

Adult↗

Juvenile aponeurotic fibroma: a case report.

Juvenile aponeurotic fibroma is a rare lesion of the palmar surface of the hands and, occasionally, of the feet of children. It is benign tumor which is self-limited in growth, but which has a strong propensity to recur. Grossly and histologically it exhibits a tendency to invade all surrounding structures, but does not metastasize. Rapidity of growth seems to slow down with increasing age. It should be recognized and treated conservatively by repeated surgical removal.

Child, Preschool↗

The dorsal ganglion of the wrist: its pathogenesis, gross and microscopic anatomy, and surgical treatment.

During a period of 25 years, 500 dorsal ganglions of the wrist were treated surgically. Three hundred and forty-six were followed for a minimum of 9 months; there were three recurrences. Dissection of the cysts under magnification of six to 25 times and serial microscopic studies showed evidence of a one way, valvelike system between the scapholunate joint and the ganglion. Stress, as a cause of ganglions, is suggested. Operative treatment involved excising all attachments to the scapholunate ligament.

Adolescent↗