Biomedical subjects

P Hilligot

Publications and source records attributed to P Hilligot.

5 recordsLinked to original sources

PubMed1992

[Periprosthetic membrane island flap with axial pedicle. Experimental study on the effect of time and expanded volume].

This experimental study, conducted in the rat, assessed the influence the volume of expansion and time after expansion on the vascularised area of a periprosthetic membrane axial pedicle (epigastric) expanded island flap. 15 Wistar rats were operated on and divided into 3 series according to the expanded volume (20 cc, 40 cc) and the time (1, 2 months). The membrane vascularisation derived from the pedicle was study by microradiography based on geometric parameters. At equal times, the volume essentially increased the length of the pedicle and had little effect on the vascularised area. For equal expanded volumes, increasing latency time increased the length and especially the width of opacification derived from the pedicle. The periprosthetic membrane axial pedicle island flap is an experimental entity whose vascularised area, obtained after a certain amount of expansion, is influenced more by time than by the volume of expansion.

Animals↗

PubMed1991

[Experimental concept of periprosthetic membrane neo-flap with axial vascular pedicle].

This study was designed to demonstrate that progressive inflation of an expansion prosthesis placed under the epigastric pedicle of the rat induced the formation of vascular connections between this vessel and the periprosthetic membrane. 17 Wistar rats were operated under general anaesthesia. The 7 cc prosthesis was implanted into the inguinal fold and the valve was placed in a dorsal position via limited incisions. 11 rats were studied, divided into 3 series: 3 control rats (non-inflated prosthesis), a series in which the prosthesis was inflated up to 20 cc (at a rate of 5 cc per week) and a series in which the fate of the capsular flap isolated as a vascular island flap in a prefabricated silicone block was studied. The assessment was threefold: clinical, microradiographic after injection of lipiodol into the epigastric artery and histological. The clinical and microradiographic studies demonstrated the reality of the blood supply of part of the periprosthetic membrane and its connections with the epigastric axial pedicle. This membrane surface, constituting a real biological flap prefabricated by expansion, corresponds to the peripedicular zone (2 x 1 cm). The viability of the island flaps was confirmed after 8, 14 and 21 days. Histological studies confirmed the hypervascularisation and richness of the collagen fibres as a result of expansion.

Animals↗

PubMed1990

[Cutaneous expansion in burns sequelae].

This technique of skin expansion with inflatable balloons has rapidly become generally used since Neuman's and Radovan's work. It offers new prospects for the treatment of the sequellae of burns as it allows increasing the surfaces of the remaining unaffected skin and using them to cover the excision of scar lesions by local or remote flaps. Experience with more than 500 implanted balloons is assessed, demonstrating very satisfactory general results in spite of a still too high number of complications, which increasingly refined techniques aim at reducing.

Burns↗

PubMed1989

The nutrient flap: a new concept of the role of the flap and application to the salvage of arteriosclerotic lower limbs.

The nutrient flap is a new concept of the role of the flap. It has three functions: (1) it provides supplementary blood flow to ischemic zones, (2) it assists venous drainage in regions of venous insufficiency, and (3) it induces the formation of a capillary network. Its skin covering role is only accessory. We have applied this principle to osteitis, pseudoarthrosis, and arteriosclerosis. The nutrient flap constitutes a new type of treatment for stage IV arteriosclerosis of the lower limbs when classical revascularization techniques cannot be performed and when high amputation is indicated. Four clinical cases and the surgical techniques used are described. The flap, usually raised from the latissimus dorsi, is anastomosed to the popliteal artery by means of an inverted saphenous vein graft. It is applied to the distal extremity of the limb after excision of the necrotic tissues. The nutrient flap preserves weight-bearing by maintaining the heel.

Aged↗

PubMedDate not supplied

[The nutrient flap. Its application in saving lower limbs involved in stage IV arteritis].

The skin covering role of the nutrient flap is only accessory. However, this role is essential for an ordinary flap. In stage IV arteriosclerosis of the lower limbs when classical revascularization techniques cannot be performed, the nutrient flap can be spread over the distal extremity of the limbs. It provides a supplementary blood flow to ischaemic zones and it induces the neoformation of a vascular network. The nutrient flap avoids the need for high amputation and preserves weight bearing by maintaining the heel. Four clinical cases are detailed and the surgical techniques are described. The flap usually raised from latissimus dorsi, is anastomosed to the popliteal artery by means of an inverted saphenous vein graft, and is spread over the extremity of the limb after a wide excision of all the necrotic tissues.

Aged↗