Biomedical subjects

B Johanson

Publications and source records attributed to B Johanson.

34 records · Page 2Linked to original sources

PubMed1979

Surgical correction of mandibular prognathism by the oblique sliding osteotomy. A clinical and radiological follow-up study of 112 consecutive cases.

The oblique sliding osteotomy has been used for surgical correction of mandibular prognathism, sometimes in combination with open bite, in 112 patients treated from 1969 to 1978. The method has proved to be connected with few surgical complications and minimal relapse tendency. No correlation was found between the degree of posterior positioning or closure of open bite at the operation and relapse tendency. Consequently no limitations in the field of application concerning the degree of mandibular protrusion or open bite have been found in this study.

Adolescent↗

PubMed1979

The sleeve anastomosis in clinical microsurgery. Case report.

Clinical use of the microvascular sleeve anastomosis in 6 elective free tissue transfers is reported. Arterial and venous anastomoses were performed. It was found that with the exception of the distal anastomosis of a vein graft to artery the sleeve anastomosis was simple and efficient. It was concluded that when the vessels to be anastomosed have suitable length and diameter the sleeve anastomosis may well be used. By its use time and effort can be saved, especially in cases requiring multiple anastomoses.

Adult↗

PubMed1977

Metallic implants as growth markers in infants with craniofacial anomalies.

The purpose of the study was to test the retention of metallic implants in bone tissue for evaluation of early facial growth patterns in patients with craniofacial malformations. Implants were inserted in 51 patients (age range: 1-17 months) with different diagnoses, the majority of them with various types of cleft lip and/or palate. Seven positions in the maxilla and four in the mandible were employed. Roentgencephalometric follow-up examinations were carried out at various stages up to the age of about three years. The results indicated that the frequency of implants firmly retained within the bone decreased with time depending on the craniofacial deformity and the implant sites. Stability seemed most critical in positions close to the alveolar processes where more than one-half of the implants inserted were dislocated or lost at the three-year follow-up. For the maxillary implants the patients with bilateral cleft lip and palate displayed the highest failure rate. This investigation did not support continuation of the implant method in infants as used in the present study.

Cephalometry↗

PubMed1977

A follow-up study of cleft children treated with vomer flap as part of a three-stage soft tissue surgical procedure. Facial morphology and dental occlusion.

The development of the face and jaws in cleft patients, treated with a three-stage surgical procedure including a single layer vomer flap, was studied by analysing cephalometric radiographs and dental casts. The material consisted of 13 patients with complete bilateral cleft lip and palate and 50 cases with complete unilateral cleft lip and palate, operated on 1964--1970. At the follow-up the average patient in both cleft categories demonstrated a maxillary retrognathia and in the unilateral cleft sample also a facial skeletal profile straighter than normal, though not as pronounced as we had found in cases where the vomer flap procedure was accompanied by bone grafting. However, the mean profile for the bilateral as well as the unilateral cleft group was straighter than reported for patients subjected to neither vomer flap nor bone grafting. The occlusal findings confirmed the maxillary growth retardation and similarly placed the present patients at a level between the results of the other two types of surgical regimes. As a side-effect cleft-bridging bone was formed in some part of the hard palate in every second case, though without importance for facial development. In an effort to reduce the restricted mid-facial growth found in the present patients, we have changed our surgical technique and since 1975 excluded the use of vomer flaps.

Bone Transplantation↗

PubMed1976

Congenital absence of the vagina. A clinical, histological and histochemical study on 17 patients with graft-constructed vaginas.

During a ten-year period 17 patients with total congenital absence of the vagina were treated by a split-skin inlay grafting technique. The average age at the time of operation was 21 years. Associated malformations, mostly afflicting the urinary tract, were found in 9 patients. The skin graft was applied on a perforated hollow acrylic mould, 12 cm long and 4 cm in diameter. The acrylic mould was removed on the tenth day and a soft silicon mould was then utilized for at least 6 months. The mean hospitalization time was 28 days. The grafts took completely in 11/17 patients and in the remaining cases the take averaged 80%. There was no major complication, such as fistulas, in the series. With the exception of two patients with male hermaphroditism all patients were contented with the operation and stated that they had a satisfactory sex-life. In 9/17 patients, a closer follow-up including a biopsy was made. The average depth of the vaginas was 8 cm (range, 6 to 10 cm), and the average diameter 3 cm (range 2.5 to 4 cm). The histological studies consistently showed that the original skin morphology was maintained in the recipient site.

Abnormalities, Multiple↗

PubMed1975

Surgical treatment of eyelid cancer with special reference to tarsoconjunctival flaps. A follow-up on 193 patients.

203 cancers of the eyelid were operated on in 193 patients. 65% of the tumours occurred in males and the peak incidence was at 75 years. 60% afflicted the lower eyelids and 21% the medial canthi. Basal cell carcinoma were found in 182 specimens and spinocellular carcinoma in only 8. Malignant melanoma, Meibomian gland carcinoma and rhabdomyosarcoma appeared each in one patient, the latter representing the only fatal case in eyelid cancer. All cancers were excised with a free margin around 5 mm. The standard procedures of reconstruction of the eyelid defect were a fullthickness skin graft in cases where conjunctiva and tarsus could be preserved (97 cases), and a tarsoconjunctival flap in full-thickness defects of the lower eyelid (58 cases). Other methods used were wedge excision and direct approximation in very small lesions involving the lid margin, an infratarsal island flap from the lower eyelid for medium-sized to large defects in the upper lid and a forehead or scalp flap after exenteration of the orbit. 18/203 cancers recurred and 12 of these were primarily regarded as radically treated. Seven of the latter were reoperated after more than 3 years and may in fact be new tumours. No metastases were found. The various reconstructive procedures are discussed in detail

Adult↗

PubMed1974