[Results of tibial valgus osteotomy for internal femoro-tibial arthritis with an average 8-year follow-up].

One hundred and eighteen knees treated by valgus osteotomy for medial femorotibial osteoarthritis were reviewed with an average follow-up of 8 years (2-23 years). Seventy-four percent of the results were good and excellent after 5 years, 64% at 10 years and 61% after 10 years. The best results were observed in patients younger than 60 years, with femorotibial osteoarthritis not exceeding grade II of Ahlback's classification, and moderate femoropatellar osteoarthritis.

[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.

[Keratoacanthoma of the eyelid. Reflections apropos of a case].

The report on a case of keratoacanthome emphasizes once again the ambiguous character presented by that tumour and the need for a careful watching of its behaviour.

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.