Biomedical subjects

J Ayala Montoro

Publications and source records attributed to J Ayala Montoro.

12 recordsLinked to original sources

PubMed2001

[First results with Integra artificial skin in the management of severe tissue defects in children].

In extreme cases of tissue defects, wound coverage after excision may be problematic because of the limited existence of donor sites. An option for temporary wound coverage used in the management after early scar release is a dermal substitute: Integral artificial skin. The biosinthetic material consists of un upper silicone film and a lower layer of porous cross-linked bovine collagen and chondroitin-6-sulfate as a template for dermal regeneration after staged tangencial necrectomy. In the third and fourth weeks following application the silicone layer was easily removed and the newly formed neodermis covered with widely unmeshed thin split thickness autograft. We report 6 patients with tissue defects with open fractures in three cases, one hemorrhagic necrosis of the skin by meningococcemia who requiring amputations of all four extremities and two traumatic necrosis. Other patient has a retractil scar. All were treated with Integral and epidermical autograft. The good results with Integral regarding recovery may affect initial treatment and reconstruction planning after extensive wound injuries with tissue defects to obtain immediate wound closure.

Biocompatible Materials↗

PubMed2001

[Index finger pollicization for congenitally deficient first finger of the hand in children].

Pollicization is a single-stage neurovascular pedicle transfer of the index digit to function as a thumb. The objective of this study is to investigate the results of index finger pollicization for correction of congenital deficiency of the first ray in pediatric hand. We have done 6 pollicizations of index fingers in 6 hands (there were 2 right hands, 2 left hands, and 1 bilaterally) in 5 patients (4 boys and 1 girl) who had absent or nonfunctioning thumbs (type III-V of Blauth's classification). Associated anomalies where numerous and included radial club hand, mirror hand and cardiovascular and urologic anomalies. The average time of Kirschner wire extraction was 32 days (30 to 36 days) and to beginning the hand rehabilitation at 5 degrees to 10 degrees day. The average age at pollicization was 5.5 years (range 2 to 8 years), and follow-up averaged 8 years (5 to 11 years). The cosmetic and functional results were excellent, with manual dexterity of prehension and opposition. Pollicization in children can be performed at least 2 years of age, to due of minor risk of neurovascular lesion but without delayed the cortical representation of the pollicized finger.

Child↗

PubMed1993

[Bone lengthening in children].

Since June 1987, were realized 45 limb lengthening (40 lower and 5 upper) in 34 children with between 3-15 years old. A dynamic axial fixator (DAF) system with telescoping capabilities, permits a slow distraction through a osteotomy and callotasis in 36 bones, and chondrodiatasis in 5. Twenty-six unilateral lengthening were realized and 5 alineation-lengthening, 20 congenital and 11 acquired causes. 14 bilateral lengthening were done in 5 patients (4 achondroplastic and one Turner's syndrome). The average increase in length was 5.5 cm. for limb and ranged from 4.3 to 8.0 cm. The healing index was 32.1 days for each centimeter of length gained in the femurs and 5.2 cm. with 28.2 days/cm. in the tibias. The complications were superficial pin tract infection (73%), that were not generally treated with antibiotic, 2 knee valve, 2 knee subluxation and one patella subluxation with knee flexion contracture.

Adolescent↗

PubMed1993

[Treatment of radial club hand with double articulated external fixators].

Congenital absence of the radius is a rare malformation, characterized by radial deviation of the hand to more than 90 degrees. Early treatment with plaster cast use to be enough to correct radial deviation, making easier surgical correction on several years later. We report a case of a newborn with radial club hand absence of the thumb of the right hand, bilateral hydronephrosis and bilateral cryptorchidism. Was treated with a new procedure, permitting wrist centralization, coupled with osteotomy and callostasis of the ulnar diaphysis using external fixation. We obtained an important success with this serial lengthening of the ulna.

Child, Preschool↗

PubMed1992

[Protocol for the treatment of hypertrophic cicatrix with silastic gel. First results].

Functional limitation and scarring use to be common sequelaes of a burns injury in children. We report our initial experience with silicone gel (silastic gel shetting) in the treatment of 15 children with hypertrophic scars, without success to other alternatives therapies. Improvements in texture, colour and height of the lesion were noted in all cases.

Adolescent↗

PubMed1991

[Congenital sternal cleft].

We report two congenital sternal cleft cases, Ravitch type 1, and treated in our hospital during a period of five teen years. This is a rare malformation and the experience is poor. Surgical primary close was realized into the first month of life with satisfactory evolution.

Female↗

PubMed1989

[Digito-lateral flaps in the treatment of retraction after hand burns in children].

The hand's severe burns are frequent in the children. The skin of the hand is bordering skin which develop towards a retractable consequence with scar. In a sample of 10 children with this consequence same type of digital side flap in 26 fingers is carried. A great uniformity of the results is obtained, the functional normality has reached to 96% and a low index of complications has arisen which can't be attributed to the technique.

Burns↗

PubMed1989

[Limb lengthening in children].

Limb lengthening is a common used callotasis technique. A dynamic axial fixator system with telescoping capabilities permits a slow distraction and becomes a proximal submetaphyseal corticotomy callus. In the last two years we realized seven limb lengthening in children under fourteen years old, five of them were unilateral dismetry and one of them an achondroplasic girl bilateral. Of them all we had six easy resoluting complications.

Achondroplasia↗

PubMed1988

[Experimental study on the process of repair-healing of the flexor system in the growing chick].

In the present work, in view of the concern for tendinous injuries in children hand flexor apparatus, tendinous healing and its functional and morphological recuperation were studied after section and surgical restoration of the leg flexor apparatus of chicken at different growth stages. We conclude that best results are obtained when the rehabilitation begins ten days after surgery.

Age Factors↗

PubMed1988

[Prospective study of equinovarus foot in 20,000 live newborn infants].

We report a prospective study about congenital clubfoot in 20,000 alive newborns and also a critical analysis about the treatment results. The frequency was 1.65 per thousand and sex ratio almost 2:1 for males. In springtime the incidence was higher. Surgical treatment was performed in less than 50% of the affected feet. There were excellent and good results in 90% of the feet.

Casts, Surgical↗

PubMed1984

[Etiologic and evaluation study of the treatment of 554 burned children].

We report about 554 burned children and make a brief analysis of the causes pointing to a better prophylaxis. Other reports contained similar data. It is noticeable that 17.7% of children with charcoal brasier burns and that 39.5% of children whose parents have two or three children came from the lowest income levels in the area of influence of our Service. We comment on the morbidity of these injuries: 55.95% of hospitalized children for a total of 5,877 days, and an average of 10.6 cures per child. Finally, in children with organic sequelae after the first treatment (28%) we make a first appraisal of the results of maintained compressive-elastic treatment in 78% of children, 40 of them in a preventive basis and 81 as a treatment of established sequelae.

Burns↗

PubMed1984

[Early detection of congenital luxation of the hip in 15,509 live newborn infants].

This paper reports the results of hip examination screening in 15,509 alive newborns during the first 24 hours of life, carried out by the same trained person. Congenital dislocation incidence was 6.18%, with dislocated hips in 3.2% and instable hips in 2.4%. Primaparity was not a predisposing factor. There was a seasonal incidence with a peak in April. Late diagnosis rate was low, but not nil. We insist about the need for a careful hip examination in newborn performed by the same trained persons.

Female↗