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Biomedical subjects

N G Georgiade

Publications and source records attributed to N G Georgiade.

At least 19 recordsLinked to original sources
PubMed1989

The inferior dermal-pyramidal type breast reduction: long-term evaluation.

The evolution of the technique of breast reduction using an inferior dermal pyramidal flap is discussed, including the changes we have found to enhance this procedure. The recommended use of a wide-based pyramidal breast parenchyma with a dermal pedicle nipple-areola flap is based on our 12-year study of 1,001 breast reductions in 519 patients ranging in age from 13 to 73 years; 37 of the patients underwent a unilateral breast reduction. The weight of tissue excised ranged from 207 g to 3,350 g from each breast. Occult carcinomas were found in two of the breast specimens. The longest sternal notch-to-nipple distance was 52 cm. The essential goals of predictability of the result, retainment of nipple sensitivity, excellent aesthetic results, and the possibility of lactation are satisfied by the use of this surgical technique. This technique appears to have continued application in younger women, in whom nipple sensation and lactation are particularly important.

Adult↗
PubMed1989

Preoperative positioning of the protruding premaxilla in the bilateral cleft lip patient.

The rationale and technique for preoperative retraction of a protrusive premaxilla in the bilateral complete cleft lip and palate patient are presented. Two types of pinned intraoral appliances are presented that can expand the palatal shelves while retracting the premaxillary segment. Findings from lateral cephalometric x-ray studies of eight appliance patients and six control patients with bilateral clefts but no appliance treatment are presented at age 15. The data indicate that the cephalometric values at age 15 are within the normal range for most patients. Incisor angulation was quite varied among the subjects.

Adolescent↗
PubMed1988

Evaluation in cats of a new material for cranioplasty: a composite of plaster of Paris and hydroxylapatite.

The materials ordinarily used to reconstruct bone defects in the calvaria and facial bones either are difficult to shape, are partially resorbed by the body, or are likely to become infected if used near a contaminated area such as the frontal sinus. Calcium sulfate hemihydrate (plaster of Paris) has been known for years to have excellent reparative qualities in bone defects, but ordinarily it is quickly resorbed. Consequently, a new material, a composite of a dense form of plaster of Paris and hydroxylapatite, was devised to provide nonabsorbable hydroxylapatite particles for bone to form around and within during the phase of plaster absorption. Two types of this material were evaluated in cranial defects in cats. Each of the plaster of Paris/hydroxylapatite mixtures was placed into a surgically unroofed frontal sinus and into a contralateral parietal trephine hole in a group of 32 cats. Two cats in each group succumbed to anesthesia, leaving two sets of 30 cats. During the entire follow-up period there was only one other death, with no evidence of wound infection, wound dehiscence, implant rejection, or cerebral dysfunction among the survivors. The cats in each group were sacrificed at 1, 2, 3, 5, 7, 8, 9, 10, or 12 months after operation. Following sacrifice, both the frontal and parietal defects were exposed and examined visually, histologically, and with histomorphometric analysis for new bone formation. New bone formation was present as early as 1 month after operation and continued to increase during the 12 months of the study. Based upon these osteogenic qualities, the ease of shaping the composite, and the lack of infection in the frontal sinus region, it is concluded that this substance could be a valuable new material for human cranioplasty.

Animals↗
PubMed1979

Plastic surgery.

Explore the source record for details and available documents.

Facial Injuries↗
PubMed1979

Reduction mammaplasty utilizing an inferior pedicle nipple-areolar flap.

A technique utilizing the inferiorly based dermal pedicle nipple-areolar flap is described. The advantages of this technique are:(1) predictable breast shape based on preoperative markings; (2) direct visibility of all areas for ease of resection and hemostasis; (3) retention of normal nipple duct connections; (4) no impairment of subjective sensation; and (5) adequate blood supply. This technique has particular application in younger women, in whom nipple sensation is quite important. The interruption of the intercostal nerve branches is usually limited because of the thickness and width of the inferior pedicles. Utilizing our modifications of the technique originally described, this versatile flap can now be used routinely in reduction mammaplasties requiring the removal of either small amounts (200 gm) or quite large amounts (2,500 gm) of tissue with consistently satisfactory aesthetic results and excellent patient satisfaction.

Adult↗
PubMed1979

Is there a reduction mammaplasty for "all seasons?".

No technique will serve the needs of all patients requiring a reduction mammaplasty and mastopexy. However, the modified, inferiorly-based dermal flap technique appears to us to offer the most advantages and the greatest latitude for a predictable breast reduction in most of these patients.

Adolescent↗
PubMed1979

Late development of hematoma around a breast implant, necessitating removal.

We present a patient who bled into the pocket around a breast implant 2 1/2 years after an augmentation mammaplasty. She had received inflatible silicone prostheses, each containing 40 mg of triamcinolone acetonide. Our belief is that this large dosage of corticosteroid was responsible for the late erosion of the medium-sized artery, which caused the hemorrhage. Exploration and evacuation of the hematoma was followed by an uneventful postoperative course.

Adult↗
PubMed1978

Microsurgical composite tissue transplantation.

Since 1974, 69 patients with extensive defects have undergone reconstruction by microsurgical composite tissue transplantation. Using this method, donor composite tissue is isolated on its blood supply, removed to a distant recipient site, and the continuity of blood flow re-established by microvascular anastomoses. In this series, 56 patients (81%) were completely successful. There have been eight (12%) failures, primarily in the extremities. There have been five (7%) partial successes, (i.e., a microvascular flap in which a portion was lost requiring a secondary procedure such as a split thickness graft). In those patients with a severely injured lower extremity, the failure rate was the greatest. Most of these were arterial (six of seven). These failures occurred early in the series and were thought to be related to a severely damaged recipient vasculature. This problem has been circumvented by an autogenous interpositional vein graft, permitting more mobility of flap placement. In the upper extremity, all but one case were successful. Early motion was permitted, preventing joint capsular contractures and loss of function. Twenty-three cases in the head and neck region were successful (one partial success). This included two composite rib grafts to the mandible. Prolonged delays in reconstruction following extirpation of a malignancy were avoided. A rapid return to society following complete reconstruction was ensured. Nine patients presented for reconstruction of the breast and thorax following radical mastectomy. All were successfully reconstructed with this new technique except one patient. Its many advantages include immediate reconstruction without delayed procedures and no secondary deformity of the donor site. Healthy, well vascularized tissue can now be transferred to a previously irradiated area with no tissue loss. This new method offers many advantages to older methods of reconstruction. Length of hospital stay and immobilization are reduced. The total number of operative procedures required in achieving the desired result is also less, thus decreasing the cost of hospital care.

Arm↗
PubMed1978

Use of the latissimus dorsi myocutaneous island flap for reconstruction in the head and neck area: case report.

Cadaver dissection indicated that a large amount of tissue could be transferred in one stage to the head and neck by a latissimus dorsi myocutaneous island flap tunneled beneath a pectoral skin bridge. A clinical trial of this flap (for one-stage reconstruction of a patient after excision of a recurrent mandibular carcinoma and a neck dissection) was successful. Previous investigators have found the myocutaneous latissimus dorsi flap to be dependable and adaptable in reconstructions of the chest wall, breast, and shoulder. It is evident now that the flap also has value in reconstructions of the head and neck.

Carcinoma, Squamous Cell↗
PubMed1978

Transfer of free flaps to provide well-vascularized, thick cover for breast reconstructions after radical mastectomy.

The use of a free flap to bring in well-vascularized cover for a breast reconstruction (following radical mastectomy) is presented. Eleven of 12 such transfers were successful. (One free groin glap failed, and that reconstruction was abandoned.) Patients for breast reconstruction who have a marked deficiency of healthy, well-vascularized skin and subcutaneous tissue in the area are suitable candidates for this operative procedure. When a free groin flap is transferred, the donor defect is minimal.

Axilla↗
PubMed1977

Microsurgical composite tissue transplantation: a new method of immediate reconstruction of extensive defects.

Of thirty-five cases of microsurgical composite tissue transplantation, twenty-five (71 per cent) were completely successful, four (11 per cent), were partially successful, and six (17 per cent) failed. If a microvascular flap should fail, older but more lengthy methods of reconstruction may be employed with a reasonable chance for success. The advantages of the donor groin flap are discussed. Operative technic and management are outlined.

Angiography↗
PubMed1977

A prototype articulator for planning orthognathic and craniofacial surgery.

Current techniques and hinge-type articulators do not provide sufficient information and versatility for the planning of orthognathic and craniofacial surgery. Dental articulators either require plaster of paris for mounting or they do not accommodate movement of both casts in all directions of space. A prototype articulator that satisfies movement of both casts in all directions of space is successfully being used as an adjunct in planning orthognathic and craniofacial surgery. There is a need for future development of sophisticated and accurate armamentarium that can be used as an aid in planning and designing surgical procedures.

Dental Articulators↗
PubMed1977

Comparison of free flaps with pedicled flaps for coverage of defects of the leg or foot.

The use of free flaps to repair defects of the leg or foot is a viable alternative to cross-leg flaps because (1) the total time of immobilization and hospitalization is less, (2) the total number of general anesthetics is less, and (3) the morbidity and cost are less. Increased experience will enhance the survival statistics for free flaps, making their use the method of choice for the reconstruction of defects in the distal part of the lower extremity.

Adolescent↗