Showing papers on "Iliac crest published in 1979"

Free vascularized bone grafts in surgery of the upper extremity.

Abstract: Free vascularized fibular grafts were employed in five patients with segmental bone defects following trauma or resection of tumors of the upper extremity with excellent results in three patients and satisfactory results in two. No donor site morbidity was experienced. A comparison with rib and iliac crest grafts indicates that the fibula is more suitable for reconstruction of long bone defects. The advantages of this technique are stability without sacrificing viability and a shorter immobilization period with more rapid incorporation and hypertrophy of the graft. The disadvantages are prolonged operating time, difficulty in assessing patency of anastamoses in the immediate postoperative period, and sacrifice of a major vessel in the lower extremity.

External fixation of unstable pelvic fractures.

Abstract: The Hoffmann external fixator was used to stabilize unstable pelvic fractures in 56 patients with multiple injuries. It was applied under general anaesthesia and the dislocated pelvis reduced and secured with a single tie bar. In 16 cases residual dislocation of less than 1.5 cm was noted after the reduction and the reduced position was maintained in 48 out of 51 cases, a minor redislocation occurred in the remaining 3 patients. Few complications could be attributed to the method, infection was noted in one patient, the iliac crest was fractured in one case and an exostosis of the iliac crest occurred in one youth. Forty-three patients were symptom free with regard to the pelvis at the time of review whereas 5 patients had residual pain and 3 diffuse symptoms. The technique of application is simple but requires two surgeons at the time of reduction and fixation of the pelvis.

Comparative bone morphometric analysis of mandibles and iliac crests

Abstract: A comparative analysis of bone mass in the mandible and the iliac crest has been carried out in autopsy specimens from 30 subjects aged 23-84 years. Microradiograms of standardized 100-micrometer-thick sections of the undemineralized plastic embedded material from the two locations were used for quantitation. The following measurements were carried out by electronic point-counting: 1) the percentage of cortical bone mass in the subperiosteal and subendosteal layers, 2) mean cortical width, and 3) the percentage of trabecular bone mass in the iliac crest. Positive correlations were found in the expressions of bone mass within the mandible; the values were significantly higher in the 200-micrometer-thick subperiosteal layer than in the remaining part of the mandibular cortex. Only a poor or no correlation was found in the expressions of bone mass from the two sites. The investigation, therefore, shows that bone mass and cortical width in the mandible cannot be predicted from a biopsy from the iliac crest. This finding may partly be due to different age-dependent functional changes of the two bones.

Iliac crest fracture after removal of two bone plugs for anterior cervical fusion. Case report.

Abstract: A case is reported in which the iliac crest fractured following removal of two bone plugs. The plugs had been removed for use in a double cervical vertebral body fusion operation by the method of Cloward.

[Autologous cancellous bone grafting in rabbits using a fibrinogen adhesive system (author's transl)].

Abstract: The changes in remodelling of autologous cancellous bone after reimplantation using a fibrinogen adhesive system (FAS) consisting of highly concentrated fibrinogen, thrombin and factor XIII were investigated in 23 rabbits. A 5 x 6 mm sized piece of bone was removed from the iliac crest and reimplanted in the same place with and without FAS. Histological, tetracycline fluorescence and radiological evaluation were carried out after 3, 6 and 9 weeks. The control group (without FAS) showed considerable breakdown of the bony trabeculae due to regression of the osteocytes in the centre of the reimplanted bone after 3 weeks, whereas in the FAS group bone was being built on to the vital trabeculae. After 6 weeks the reimplant in the FAS group was still clearly advanced in relation to the non-FAS group. The difference had almost disappeared after 9 weeks. Acceleration of remodelling and lack of regression of the osteocytes in the centre of autologous reimplants after the use of FAS indicates an earlier recommencement of nutrition as compared with the control group. New bone formation in autologous reimplants was clearly accelerated by the use of FAS.

A bone-fixing trephine for large-diameter iliac biopsies in dogs.

Abstract: For experimental studies of bone in dogs it may be necessary to collect from the iliac crest biopsies of a larger diameter than is usually obtainable. A disadvantage of using a trephine with a large bore is that the biopsy may be pulled out of the trephine by the forces exerted by tendons inserted in the medial cortex of the ilium. To overcome this difficulty we developed a trephine with an internal bore of 10 mm combined with a biopsy-fixing attachment.

Augmentation Rhinoplasty for Saddle Nose

Abstract: The etiology and prevention of saddle nose is discussed. In the present series autologous iliac crest bone, autologous septal cartilage and bone, and homologous septal cartilage were used as grafting material. The advantages and disadvantages of each type of grafted tissue are discussed. The autologous and homologous septal bone & cartilage have been found quite satisfactory grafting material to correct the saddle deformity of the nose. The overall results are much better in the final shape of the nose if the nose is narrowed and tip refined simultaneously by augmentation rhinoplasty.

[The value of posterior iliac osteotomy in the treatment of ectopia vesicae. Two-cases (author's transl)].

Abstract: The authors emphasise the value of bilateral posterior iliac oestotomy in facilitating aponeurotic and cutaneous closure of ectopia vesicae. The osteotomy cuts the wing of the iliac bone above the greater sciatic notch 2 cms lateral to the sacroiliac joint. The new point made by the author is the use of an external fixation device the pins of which are implanted only in the iliac crest in the still young child, whilst in the adolescent a more solid method of fixation involves in insertion of additional pins in the pubis (taking care to avoid the femoral vessels). The recommended operative schedule is as follows: 1) Simple posterior iliac osteotomy. 2) Bed rest for 8 to 15 days until cutaneous healing of the iliac incisions. 3) Urological phase (which for the author consists of excision of the plaque with ureterocolic implantation) with aponeurotic closure (using eliptical strips fashioned from the rectus sheath) and simple cutaneous closure without any traction because of the osteotomies. 4) Insertion of external fixation device at the end of the urological phase. This is supported by 2 cases reports with and uncomplicated postoperative course from both a urological and orthopaedic standpoint.

[Elimination of partial premature epiphyseal closure by transplantation of epiphyseal cartilage. An experimental study (author's transl)].

Abstract: An experimental study was made on 118 rabbits aimed at restoring bone growth after partial epiphyseal closure. In a first stage, a partial epiphyseal closure was made at the level of the lower femoral growth plate by excision of the growth cartilage and insertion of a bone graft. In a second stage, the bony bridge was removed and a segment of iliac crest growth cartilage was transplanted. It was concluded, on the basis of radiographic and histological studies that the best results were obtained when the growth cartilage was transplanted alone or with a thin layer of bone. The results were poor when the layer of bone transplanted with the cartilage was too thick.