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Biomedical subjects

M Schoofs

Publications and source records attributed to M Schoofs.

At least 37 records · Page 2Linked to original sources

Sixty argon laser-assisted anastomoses in rats: macroscopic and histological studies.

The present in vivo study was undertaken to evaluate the patency rate and histological appearance of 30 venous anastomoses and 30 carotid anastomoses in Wistar rats using a laser. An argon laser was used with the following parameters: power, 100 mW; time, 3 seconds; continuous mode; spot, 200 microns (fluence, 950 J/cm2; irradiance. 320 W/cm2). The macroscopic appearance and patency rate were evaluated at different postoperative intervals (30 days and 60 days). In the venous group, the patency rate was 100% with no saccular pseudo-aneurysm. In the arterial group, the patency rate was 93% with three saccular pseudo-aneurysms and two thromboses. Histological studies noted slight and transitory modifications of the media in the arterial group. In the venous group, the modifications appeared under the endothelium. Since the procedure was similar in both groups, the lack of pseudo-aneurysm formation in the venous group can be explained by a lower intravascular pressure.

Animals↗

[Locoregional flaps for the hand: functional anatomy and case examples. An overview].

Among the multitude of actually proposed loco-regional flaps and their variants, we describe our options and technical viewpoints for common coverage problems in hand surgery, according to the guidelines of functional anatomy. Special emphasis is placed on newer techniques such as microsurgical free flaps, venous flaps, and reverse flow vascularisation.

Finger Injuries↗

[The strategy of the finger bank].

The authors present 40 cases of multidigital amputations with a "bank-finger" reconstruction. They use of flaps, tendons, nerves grafts .... from the injured finger. Moreover, they propose a guide in the use of heterotopic implantations, in emergency and in secondary. The indications of the digital translocation is discussed about the priority finger and the localisation of the others fingers to be reimplanted. They make mention of the rare possibility of temporary ectopic implantation.

Adolescent↗

[Reconstruction of the long fingers using toe transfers].

The authors review 29 toes transfers on 24 patients with injury of long fingers between 1985 and 1990. The series contains 16 complete toes and 13 partial toes transfers. The results, inconvenience and indications are discussed.

Adolescent↗

[Emergency reconstruction using partial transfer of toes. Apropos of 6 cases].

The authors report on 6 cases for which an emergency toe partial transfer was performed for the reconstruction of a thumb or long finger digital segment. In most cases, toe pulp transfer was involved, but also partial composite pulp-bone-nail transfers. Such technique, whose indications seldom apply in an emergency, gives better results than conventional techniques (such as homo- and hetero-digital flaps or distant flaps).

Adolescent↗

[Forum: reconstruction of the traumatic thumb. Toe as a donor site for reconstruction of the thumb].

One method of reconstruction of the thumb consists of microsurgical transfer of a toe. After a brief anatomical and technical review, the authors describe the various possibilities of thumb reconstruction using toe transfer: transfer of the 2nd toe, transfer of the great toe, partial toe transfers. Traumatic amputations must be distinguished from congenital amputations in terms of the indications for toe transfers. The indication for toe transfer in a case of traumatic amputation may be based on the level of amputation.

Amputation, Traumatic↗

[Management of digital ischemia. 5 cases].

Ischaemic fingers, a rare, generally chronic disease, may sometimes be acute, requiring emergency surgical treatment. Five cases are reported: 3 acute and 2 chronic. The 3 cases of acute ischaemia occurred in the context of cardiac arrhythmias in 2 cases and an aneurysm of the ulnar artery in 1 case. Treatment consisted of 2 thrombectomies with microsurgical digital sympathectomy thrombectomies with microsurgical digital sympathectomy and resection of the aneurysm. Complete clinical and functional recovery was obtained in these three cases. The 2 cases of chronic ischaemia were due to diabetes and Buerger's disease. In both cases, medical treatment was followed by thoracic sympathectomy with secondary resection of necrotic tissue as required. In conclusion, the prognosis in the acute cases depends on the rapidity of correction of the arterial obstruction associated with digital sympathectomy. In the case of chronic ischaemia, the clinical course depends on the efficacy of medico-surgical treatment and the severity of the underlying disease.

Acute Disease↗

[Review of 30 digital ring avulsions].

Thirty cases of digital avulsions caused by a ring have were reviewed after a period of eighteen months. The average age of the patients was 30 years, ranging from 5 to 60 years. Fourteen vascular survivals were obtained. In this series the ring finger was the most frequently affected one (21 cases). In 20 cases, the people involved were long distance lorry drivers. The operating techniques were direct micro arterial and venous anastomosis in 2 cases, and isolated arterial bypass grafts in 6 cases, combined arterial and venous bypass graft in 18 cases. No surviving finger was amputated, but 3 patients, including 2 women, asked the amputation of an unsightly stump. This series confirms the extreme seriousness of digital avulsion caused by rings and the value of a microsurgical treatment of vascular lesions by anastomosis or by arterial and venous bypass grafts from stage 2 onwards.

Adolescent↗

[Hyperbaric oxygen therapy in the treatment of wounds, in plastic and reconstructive surgery].

After recalling the mechanism of action of hyperbaric oxygen (HBO) on healing processes, the authors review the principal indications for this technique in plastic and reconstructive surgery, such as crush injuries and acute post-traumatic ischemia of the limbs, skin flaps and skin grafts, when there is a risk of their not taking, and burns. They stress the importance of strict, stratified therapeutic protocols with control of the hyperoxygenation induced by HBO. In the authors' experience, transcutaneous measurements of the partial pressure of oxygen under the hyperbaric atmosphere is a very useful method with a predictive value to determine the indications for treatment with HBO and to monitor its effects.

Blood Gas Monitoring, Transcutaneous↗

[The value of the free external brachial flap in surgery of the hand].

The lateral brachial flap is a septo-cutaneous flap raised from the lateral surface of the arm. It is a thin and reliable flap with a neurovascular pedicle and its donor site can be self-closing in the case of small flaps. The authors report six cases of closure of hand defects by means of this flap, including one case of emergency repair. Due to its simplicity, the lateral brachial flap now constitutes one of the alternatives for cover of hand defects and its pedicled version may be useful cover of the elbow region.

Adult↗

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↗