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Biomedical subjects

M Watillon

Publications and source records attributed to M Watillon.

At least 19 recordsLinked to original sources
PubMed1990

[Indications for femoral intertrochanteric osteotomy for arthritis sequelae of hip dysplasia].

Pauwel's osteotomies unquestionably have a place in the treatment of the osteoarthritic consequences of subluxated dysplastic hips. They provide excellent and lasting results when the indication is correct and the surgical procedure is carried out properly. We recommend a varus osteotomy for coxa valga with subluxation presenting with a dense triangle at the edge of the socket and congruent joint surfaces in abduction; a valgus osteotomy when the femoral head and the acetabulum are considerably deformed, with a dense triangle at the edge of the socket and with the joint surfaces congruent in adduction only. When the outcome is questionable owing to the joint configuration, above all in the elderly, we suggest a total hip replacement.

Adult↗
PubMed1976

A duplex retina and the electroretinogram in the nocturnal Perodicticus potto.

The presence of cones in potto's retina has been proved beyond doubt although they are very restricted in number (1 cone for 300 rods). Morphologically, speaking there is no point in calling these cones "rudimentary" except for their slender outer segment. There are red sensitive elements in that retina at wavelengths beyond the spectral sensitivity of visual purple and it is tempting to assume that these elements are cones. The ERG evoked from these elements by red light differs from that in response to white and blue light. They dark-adapt faster than the receptors sensitive to blue and white flashes. However in some of their properties, for example fusion frequency, these cones behave like rods in other species. As these few cones seem to activate the bipolar cells nearly as effectively as the numerous rods, it is suggested that these cones may be responsible for day vision in the potto.

Animals↗