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H Costa

Publications and source records attributed to H Costa.

30 records · Page 2Linked to original sources
PubMed1988

Venous skin flaps: an experimental study and report of two clinical distal island flaps.

An experimental study of saphenous flaps in 26 dogs is reported, which confirmed the work of Baek et al. (1985) that venous flaps can survive. In addition, it showed that venous island flaps could survive after division of the venous pedicle proximally or distally, or as free flaps, providing through flow was re-established by venous anastomoses. In this study no flaps survived on a single venous pedicle without through flow. Two successful clinical cases of venous flaps are also reported, in which through flow was re-established by a simple venous anastomosis. One of these flaps threatened to become necrotic until the thrombosed anastomosis was successfully redone.

Adolescent↗
PubMed1988

The distally based island posterior interosseous flap.

The posterior interosseous vessels give a significant contribution to the fascial plexus which supplies the skin of the forearm. This vascular arrangement forms the basis for an island fasciocutaneous flap which can be based either proximally or distally. Twenty-two dissection studies have been carried out to demonstrate the vascular anatomy of the posterior interosseous artery and its contribution to the fascial plexus. Based on this information, the design and usage of an island fasciocutaneous flap is described. A distally based island fasciocutaneous flap appears to have a reliable vascular basis and its role in covering soft tissue defects in the hand is illustrated in three clinical cases.

Aged↗
PubMed1988

Thumb reconstruction by the posterior interosseous osteocutaneous flap.

An island osteo-fasciocutaneous flap, based on the posterior interosseous vessels, is described for thumb reconstruction. The artery supplies the fascial plexus of the posterior forearm as well as the superficial and deep extensor muscles. A vascularised bone segment of the upper third of the ulna can be harvested, including a cuff of the extensor pollicis longus muscle. The flap was used successfully in two clinical cases.

Adolescent↗
PubMed1986

A new distally based fasciocutaneous flap of the leg.

A distally based flap on the medial side of the lower leg is described. In ten cadaver dissections two perforating arteries from the posterior tibial artery were a constant finding and a flap has been designed based on these. It has been used successfully in four patients.

Adult↗
PubMed1986

International dermatosurgery: use of medial plantar based skin flaps for correction of foot defects.

The recently described instep island flap can be used to restore foot tissue deficits, however, its usefulness is limited by the length of the neurovascular pedicle and by the small surface of the flap. This flap can also be used as a free or as a cross-foot flap. We describe our experience with 10 patients. Heel defects in seven of them were corrected by the instep island flap. In the other three cases, the technique was modified, and the flap was obtained from the contralateral side, by a cross-foot flap. In these last three cases, sensibility was obtained by neurorrhaphy, with excellent results.

Adult↗
PubMed1982

The radioimmunoassay of a carcinoembryonic antigen fraction.

A qualitative and clinical evaluation of a radioimmunoassay for a carcinoembryonic antigen (CEA) fraction in serum is presented. The technique shows cross-reactions with normal organs' extracts lower than 0.05% and a 0.9977 correlation coefficient. The coefficients of variation indicate satisfactory precision. In the clinical study it was found that sensitivity for lung cancer was higher than for colorectal cancer. Specificity for cancer was 98.3%. These results suggest that the CEA fraction employed shows more lung cancer determinants than for digestive cancer.

Adolescent↗
PubMedDate not supplied

Further experience with the posterior interosseous flap.

This paper describes and discusses some of the clinical applications of the posterior interosseous forearm flap in hand reconstruction, including the fact that larger areas of skin than previously reported can be used safely. It is based on a series of 21 patients, 50 anatomical dissections and 10 injection studies.

Adolescent↗