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Biomedical subjects

J P Métaizeau

Publications and source records attributed to J P Métaizeau.

15 recordsLinked to original sources

[Supracondylar fractures of the humerus in children: treatment by downward nailing].

Surgical treatment of supracondylar fractures of the humerus in children concerns a limited number of these fractures. That is fractures with great displacement and periosteal rupture, which are reported in our experience of 96 cases treated by an original method. It consists of external reduction stabilized by 2 nails introduced in the middle third of the shaft and diverging in the lower humeral epiphysis. We insist on the use of two X-ray amplifliers in the operative technique. Ninety-four fractures were controlled after 3 months, during nail removal and 81 patients had a follow-up more than one year. Morphological and functional results were appreciated as 75 excellent 15 good and 4 bad. Among the complications encountered we noticed that cubitus varus was very rare. Only 6 controls showed an angle of less than 10 degrees. As compared to the other surgical techniques this method is very encouraging and comforts our indications in unstable third degree fractures, unsuitable for Blount's method, and the great majority of forth degree fractures.

Adolescent↗

[Use of vascularized bone grafts in surgery of the spine. Apropos of 6 cases].

The Authors report six cases in which a pedicle bone graft was placed by an anterior approach to stabilise a spine deformity. In two cases they used a fibula, in four others it was a cortico-cancellous iliac graft. One case was a neurofibromatosis spine deformity, the second was a Cooley disease, the third one was an hydatidosis, the three remaining cases were spondylolitheses. All patients had been initially operated on by a posterior approach. Fusion was obtained in all cases.

Adolescent↗

[Microvascular transfer of the heel pad to a thigh stump. Functional benefit of the distal support in prosthetic fitting of the amputated thigh].

The emergency transfer of a composite microvascular graft comprising the calcaneum, heel-pad and plantar skin in a twelve-year-old child allowed the amputation level to be changed from the upper to the lower third of the thigh and full weight-bearing solely on the bottom of the prosthesis was achieved. This method has several functional and trophic advantages which justify its performance when the indications are appropriate.

Amputation, Surgical↗

[A computer-assisted study of the surgical treatment of talipes equinovarus].

One-hundred-and-eleven club feet were treated surgically and followed up for more than three years. A computer analysis of the results, compared with the information contained in the operative notes, provided a better assessment of the effectiveness of each surgical procedure. Resection of capsular structures did not give better results than simple division. Posterior capsulotomy of the sub-taloid joint did not alter the separation between the talus and the calcaneus in lateral radiographs. Division of the plantar aponeurosis and lengthening of the long toe flexors seemed to diminish the frequency of secondary cavus deformity. Lengthening of the tibialis anterior improved the range of plantar-flexion of the ankle and reduced the occurrence of residual adduction of the forefoot and elevation of the first metatarsal. Finally, to avoid weakening of muscles, it proved to be vital to preserve the tendon sheaths and to avoid longitudinal tendon division followed by suture, which favours adhesions and tethering of tendons. The authors describe the details of the stages of surgical release. It is not a matter of a new approach to the treatment of club foot but a combination of detailed modifications aiming to produce a perfect final result.

Child↗

[Surgical treatment of deformities of the anterior thoracic wall by frontal chondrotomy: an original technic].

According to the author, the frequency of recurrence after sternochondroplasty is related to the poor quality of the chondral callus which is of limited thickness. In addition, it is subjected to shearing force at each respiratory movement. The author proposes frontal chondrotomies allowing anterior displacement in funnel chests or posterior cartilages are sutured. The correction obtained is stable without any supplementary fixation. The plane of section being perpendicular to respiratory movement, the sutures are no longer submitted to shearing strain but to alternate compression and traction. In this way secondary displacement is avoided.

Biomechanical Phenomena↗

[The effects of innominate ostèotomy on the opposite acetabulum (author's transl)].

The study on dissected pelvis shows that after innominate osteotomy, the acetabulum still faces too much anteriorly. Its anterior wall remains deficient. The innominate osteotomy is able to diminish the excessive antetorsion of the acetabulum by rotating the distal fragment outwards. But this movement seems to increase the antetorsion of the opposite acetabulum. Axial X. Rays of the pelvis authors think that in case of great anterior defect, and in case of bilateral hip dysplasia, a triple pelvic osteotomy will be preferred to Salter's osteotomy.

Acetabulum↗

[Pseudo-sarcomatous osteomyilitis in the child (author's transl)].

The authors report three unusual cases of paediatric osteomyelitis resembling a lytic or mixed osteosarcoma. The severity of the radiological lesions is such that only a diagnostic approach is possible before surgical biopsy. Under the effects of treatment, osteolysis resolved in two cases by bone eburnation in two cases and pandiaphyseal sequestration in one case. These three cases were collected in less than a year. Thus osteomyelitis is currently adding new diagnostic traps in bone pathology in children.

Child↗

[Reduction and fixation of fractures of the neck of the radious be centro-medullary pinning. Original technic].

Fractures of the neck of the radius may cause considerable permanent limitation of elbow and forearm movement. This complications resulted from failure to achieve adequate reduction or from vascular disturbance. The authors make use of a Kirschner wire introduced in the medullary canal by its lower end. It is possible to reduce and stabilise the head of the radius without open reduction.

Adolescent↗

Percutaneous epiphysiodesis using transphyseal screws (PETS).

We describe a new technique of percutaneous epiphysiodesis using transphyseal screws (PETS) and our experience with it in 32 cases of limb-length inequality and nine angular knee deformities. A subgroup of 18 patients with postfracture limb overgrowth formed a clinical model for study of the real efficacy of PETS. It proved a reliable method with few complications and many advantages such as simplicity of technique, short operating time, rapid postoperative rehabilitation, and reversibility. Bone-length inequality decreased from a preepiphysiodesis average of 2.47 cm (range, 1.5-4.6) to 0.51 cm at skeletal maturity. The tibiofemoral angle reduced from a preoperative average of 7.66 degrees to 0.86 degrees at maturity. The screws began to exert significant growth inhibition within 6 months of insertion, slowing down the distal femoral and upper tibial physes by 68 and 56%, respectively. They achieved maximum growth retardation over the ensuing 12 months, slowing down the distal femoral physis by 89% and the proximal tibial physis by 95%. At skeletal maturity, total femoral growth was 45% and total tibial growth was 52% that of the normal side. Key

Bone Diseases, Developmental↗